Benchmark 2021-B31 Mortgage Trust

08/30/2024 | Press release | Distributed by Public on 08/30/2024 09:44

Asset Backed Issuer Distribution Report Form 10 D


Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
STATEMENT TO NOTEHOLDERS
August 16, 2024
TRANSACTION PARTIES
Depositor: Citigroup Commercial Mortgage Securities Inc.
Master Servicer: Midland Loan Services, a Division of PNC Bank N.A.
Special Servicer: Rialto Capital Advisors, LLC
Asset Representations Reviewer /
Pentalpha Surveillance LLC.
Operating Advisor:
Trustee: Wilmington Trust, National Association
Certificate Administrator: Citibank, N.A.
Danny Lee Citibank, Agency and Trust
(212) 816-4936 388 Greenwich Street Trading, 4th Floor
[email protected] New York, NY 10013
TABLE OF CONTENTS
1 . Distribution Summary 2
1.1 . Summary 2
1.2 . Factors 3
1.3 . Interest Detail 4
1.4 . Interest Shortfall Detail 5
1.5 . Principal Detail 6
2 . Reconciliation Detail 7
3 . Other Information 8
4 . Stratification Detail 9
5 . Mortgage Loan Detail 14
6 . NOI Detail 16
7 . Delinquency Loan Detail 18
8 . Collateral Performance Delinquency and Loan Status Detail 19
9 . Appraisal Reduction Detail 20
10 . Historical Appraisal Reduction Detail 21
11 . Loan Modification Detail 22
12 . Historical Loan Modification Detail 23
13 . Specially Serviced Loan Detail 24
14 . Historical Specially Serviced Loan Detail 25
15 . Unscheduled Principal Detail 26
16 . Historical Unscheduled Principal Detail 27
17 . Liquidated Loan Detail 28
18 . Historical Liquidated Loan Detail 29
19 . CREFC Investor Reporting Package Legends 30
20 . Notes 31
Reports Available at sf.citidirect.com v. 21.09.28 Page 1 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
DISTRIBUTION SUMMARY
August 16, 2024
Accrual Other Non-Cash
Original Prior Pass-Through Day Interest (As Interest) Principal Total Realized Loss Balance Current
Class Balance Balance Rate Count Distributed Distributed Distributed Distributed /(Recovery) Change Balance
A-1 19,800,000.00 10,538,034.10 1.357000 % 30/360 11,916.76 - 329,625.88 341,542.64 - - 10,208,408.22
A-2 138,050,000.00 138,050,000.00 2.588000 % 30/360 297,727.83 - - 297,727.83 - - 138,050,000.00
A-3 23,220,000.00 23,220,000.00 2.703000 % 30/360 52,303.05 - - 52,303.05 - - 23,220,000.00
A-4 215,000,000.00 215,000,000.00 2.420000 % 30/360 433,583.33 - - 433,583.33 - - 215,000,000.00
A-5 575,676,000.00 575,676,000.00 2.669000 % 30/360 1,280,399.37 - - 1,280,399.37 - - 575,676,000.00
A-AB 23,526,000.00 23,526,000.00 2.615000 % 30/360 51,267.07 - - 51,267.07 - - 23,526,000.00
A-S 142,182,000.00 142,182,000.00 2.892000 % 30/360 342,658.62 - - 342,658.62 - - 142,182,000.00
B 63,981,000.00 63,981,000.00 2.748000 % 30/360 146,516.49 - - 146,516.49 - - 63,981,000.00
C 60,428,000.00 60,428,000.00 3.195000 % 30/360 160,889.55 - - 160,889.55 - - 60,428,000.00
D 37,322,000.00 37,322,000.00 2.250000 % 30/360 69,978.75 - - 69,978.75 - - 37,322,000.00
E 26,659,000.00 26,659,000.00 2.250000 % 30/360 49,985.62 - - 49,985.62 - - 26,659,000.00
F 26,660,000.00 26,660,000.00 2.250000 % 30/360 49,987.50 - - 49,987.50 - - 26,660,000.00
G 14,218,000.00 14,218,000.00 2.250000 % 30/360 26,658.75 - - 26,658.75 - - 14,218,000.00
H 55,095,655.00 55,095,655.00 2.250000 % 30/360 83,322.80 - - 83,322.80 - - 55,095,655.00
R - - 0.000000 % 30/360 - - - - - - -
S - - 0.000000 % 30/360 - - - - - - -
VRR Interest 74,832,509.00 74,345,037.07 0.000000 % 30/360 216,172.84 - 17,348.73 233,521.57 - - 74,327,688.34
Total 1,496,650,164.00 1,486,900,726.17 3,273,368.33 - 346,974.61 3,620,342.94 - - 1,486,553,751.56
Notional
X-A 1,137,454,000.00 1,128,192,034.10 0.879152 % 30/360 826,543.59 - - 826,543.59 - (329,625.88 ) 1,127,862,408.22
X-B 124,409,000.00 124,409,000.00 0.541094 % 30/360 56,097.49 - - 56,097.49 - - 124,409,000.00
X-D 63,981,000.00 63,981,000.00 1.256211 % 30/360 66,978.04 - - 66,978.04 - - 63,981,000.00
X-F 26,660,000.00 26,660,000.00 1.256211 % 30/360 27,908.83 - - 27,908.83 - - 26,660,000.00
X-G 14,218,000.00 14,218,000.00 1.256211 % 30/360 14,884.01 - - 14,884.01 - - 14,218,000.00
X-H 55,095,655.00 55,095,655.00 1.256211 % 30/360 57,676.48 - - 57,676.48 - - 55,095,655.00
Total 1,421,817,655.00 1,412,555,689.10 1,050,088.44 - - 1,050,088.44 - (329,625.88 ) 1,412,226,063.22
Grand Total 2,918,467,819.00 2,899,456,415.27 4,323,456.77 - 346,974.61 4,670,431.38 - (329,625.88 ) 2,898,779,814.78
Reports Available at sf.citidirect.com v. 21.09.28 Page 2 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
DISTRIBUTION SUMMARY - FACTORS
August 16, 2024
Other Non-Cash
Record Interest (As Interest) Principal Total Realized Loss Balance Current
Class CUSIP Date Distributed Distributed Distributed Distributed /(Recovery) Change Balance
A-1 08163 MAA5 07/31/2024 0.60185657 - 16.64777172 17.24962828 - - 515.57617273
A-2 08163 MAB3 07/31/2024 2.15666664 - - 2.15666664 - - 1,000.00000000
A-3 08163 MAC1 07/31/2024 2.25250000 - - 2.25250000 - - 1,000.00000000
A-4 08163 MAD9 07/31/2024 2.01666665 - - 2.01666665 - - 1,000.00000000
A-5 08163 MAE7 07/31/2024 2.22416667 - - 2.22416667 - - 1,000.00000000
A-AB 08163 MAF4 07/31/2024 2.17916645 - - 2.17916645 - - 1,000.00000000
A-S 08163 MAH0 07/31/2024 2.41000000 - - 2.41000000 - - 1,000.00000000
B 08163 MAJ6 07/31/2024 2.29000000 - - 2.29000000 - - 1,000.00000000
C 08163 MAK3 07/31/2024 2.66250000 - - 2.66250000 - - 1,000.00000000
D 08163MAW7 U0744XAF2 07/31/2024 1.87500000 - - 1.87500000 - - 1,000.00000000
E 08163MAY3 U0744XAG0 07/31/2024 1.87499981 - - 1.87499981 - - 1,000.00000000
F 08163MBA4 U0744XAH8 07/31/2024 1.87500000 - - 1.87500000 - - 1,000.00000000
G 08163MBC0 U0744XAJ4 07/31/2024 1.87500000 - - 1.87500000 - - 1,000.00000000
H 08163MBE6 U0744XAK1 07/31/2024 1.51232978 - - 1.51232978 - - 1,000.00000000
R 08163 MBJ5 07/31/2024 - - - - - - -
S 00163 MBH9 07/31/2024 - - - - - - -
VRR Interest 08163 MBM8 07/31/2024 2.88875574 - 0.23183414 3.12058988 - - 993.25399259
X-A 08163 MAG2 07/31/2024 0.72666111 - - 0.72666111 - - 991.56749040
X-B 08163MAL1 U0744XAA3 07/31/2024 0.45091183 - - 0.45091183 - - 1,000.00000000
X-D 08163MAN7 U0744XAB1 07/31/2024 1.04684266 - - 1.04684266 - - 1,000.00000000
X-F 08163MAQ0 U0744XAC9 07/31/2024 1.04684284 - - 1.04684284 - - 1,000.00000000
X-G 08163MAS6 U0744XAD7 07/31/2024 1.04684273 - - 1.04684273 - - 1,000.00000000
X-H 08163MAU1 U0744XAE5 07/31/2024 1.04684262 - - 1.04684262 - - 1,000.00000000
Reports Available at sf.citidirect.com v. 21.09.28 Page 3 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
DISTRIBUTION INFORMATION - INTEREST DETAIL
August 16, 2024
Rate Interest Shortfall Paid
Accrual Net Non Carry Basis Carry
Class Uncapped Capped Next Dates Accrued Deferred Recovered Forward Risk Accrued Forward Basis Risk Total
A-1 1.35700 % 1.35700 % 1.35700 % 07/01-07/31 11,916.76 - - - - 11,916.76 - - 11,916.76
A-2 2.58800 % 2.58800 % 2.58800 % 07/01-07/31 297,727.83 - - - - 297,727.83 - - 297,727.83
A-3 2.70300 % 2.70300 % 2.70300 % 07/01-07/31 52,303.05 - - - - 52,303.05 - - 52,303.05
A-4 2.42000 % 2.42000 % 2.42000 % 07/01-07/31 433,583.33 - - - - 433,583.33 - - 433,583.33
A-5 2.66900 % 2.66900 % 2.66900 % 07/01-07/31 1,280,399.37 - - - - 1,280,399.37 - - 1,280,399.37
A-AB 2.61500 % 2.61500 % 2.61500 % 07/01-07/31 51,267.07 - - - - 51,267.07 - - 51,267.07
A-S 2.89200 % 2.89200 % 2.89200 % 07/01-07/31 342,658.62 - - - - 342,658.62 - - 342,658.62
B 2.74800 % 2.74800 % 2.74800 % 07/01-07/31 146,516.49 - - - - 146,516.49 - - 146,516.49
C 3.19500 % 3.19500 % 3.19500 % 07/01-07/31 160,889.55 - - - - 160,889.55 - - 160,889.55
D 2.25000 % 2.25000 % 2.25000 % 07/01-07/31 69,978.75 - - - - 69,978.75 - - 69,978.75
E 2.25000 % 2.25000 % 2.25000 % 07/01-07/31 49,985.62 - - - - 49,985.62 - - 49,985.62
F 2.25000 % 2.25000 % 2.25000 % 07/01-07/31 49,987.50 - - - - 49,987.50 - - 49,987.50
G 2.25000 % 2.25000 % 2.25000 % 07/01-07/31 26,658.75 - - - - 26,658.75 - - 26,658.75
H 2.25000 % 2.25000 % 2.25000 % 07/01-07/31 103,304.35 - - 20,319.54 - 83,322.80 - - 83,322.80
R 0.00000 % 0.00000 % 0.00000 % 07/01-07/31 - - - - - - - - -
S 0.00000 % 0.00000 % 0.00000 % 07/01-07/31 - - - - - - - - -
VRR Interest 0.00000 % 0.00000 % 0.00000 % 07/01-07/31 216,172.84 - - - - 216,172.84 - - 216,172.84
Total 3,293,349.88 - - 20,319.54 - 3,273,368.33 - - 3,273,368.33
Notional
X-A 0.77577 % 0.87915 % 0.87915 % 07/01-07/31 826,543.59 - - - - 826,543.59 - - 826,543.59
X-B 0.42737 % 0.54109 % 0.54109 % 07/01-07/31 56,097.49 - - - - 56,097.49 - - 56,097.49
X-D 1.14249 % 1.25621 % 1.25621 % 07/01-07/31 66,978.04 - - - - 66,978.04 - - 66,978.04
X-F 1.14249 % 1.25621 % 1.25621 % 07/01-07/31 27,908.83 - - - - 27,908.83 - - 27,908.83
X-G 1.14249 % 1.25621 % 1.25621 % 07/01-07/31 14,884.01 - - - - 14,884.01 - - 14,884.01
X-H 1.14249 % 1.25621 % 1.25621 % 07/01-07/31 57,676.48 - - - - 57,676.48 - - 57,676.48
Total 1,050,088.44 - - - - 1,050,088.44 - - 1,050,088.44
Grand Total 4,343,438.32 - - 20,319.54 - 4,323,456.77 - - 4,323,456.77
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Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
DISTRIBUTION INFORMATION - INTEREST SHORTFALL DETAIL
August 16, 2024
Non-Recov Shortfall Carry Forward Interest Basis Risk Shortfall
Other
Class PPIS SSRA Shortfall Prior Int. on Prior New Paid Outstanding Prior Int. on Prior New Paid Outstanding
A-1 - - - - - - - - - - - - -
A-2 - - - - - - - - - - - - -
A-3 - - - - - - - - - - - - -
A-4 - - - - - - - - - - - - -
A-5 - - - - - - - - - - - - -
A-AB - - - - - - - - - - - - -
A-S - - - - - - - - - - - - -
B - - - - - - - - - - - - -
C - - - - - - - - - - - - -
D - - - - - - - - - - - - -
E - - - - - - - - - - - - -
F - - - - - - - - - - - - -
G - - - - - - - - - - - - -
H - - - 180,262.90 337.99 19,981.55 - 200,582.44 - - - - -
R - - - - - - - - - - - - -
S - - - - - - - - - - - - -
VRR Interest - - - - - - - - - - - - -
Total - - - 180,262.90 337.99 19,981.55 - 200,582.44 - - - - -
Notional
X-A - - - - - - - - - - - - -
X-B - - - - - - - - - - - - -
X-D - - - - - - - - - - - - -
X-F - - - - - - - - - - - - -
X-G - - - - - - - - - - - - -
X-H - - - - - - - - - - - - -
Total - - - - - - - - - - - - -
Grand Total - - - 180,262.90 337.99 19,981.55 - 200,582.44 - - - - -
Reports Available at sf.citidirect.com v. 21.09.28 Page 5 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
DISTRIBUTION INFORMATION - PRINCIPAL DETAIL
August 16, 2024
Non-Cash Cumulative
Prior Principal Accreted Realized Loss Balance Current Realized Class % Class % Sub % Sub %
Class Balance Distributed Principal /(Recovery) Change Balance Loss Original Current Original Current
A-1 10,538,034.10 329,625.88 - - - 10,208,408.22 - 1.32 % 0.69 % 30.00 % 30.20 %
A-2 138,050,000.00 - - - - 138,050,000.00 - 9.22 % 9.29 % 30.00 % 30.20 %
A-3 23,220,000.00 - - - - 23,220,000.00 - 1.55 % 1.56 % 30.00 % 30.20 %
A-4 215,000,000.00 - - - - 215,000,000.00 - 14.37 % 14.46 % 30.00 % 30.20 %
A-5 575,676,000.00 - - - - 575,676,000.00 - 38.46 % 38.73 % 30.00 % 30.20 %
A-AB 23,526,000.00 - - - - 23,526,000.00 - 1.57 % 1.58 % 30.00 % 30.20 %
A-S 142,182,000.00 - - - - 142,182,000.00 - 9.50 % 9.56 % 20.00 % 20.14 %
B 63,981,000.00 - - - - 63,981,000.00 - 4.27 % 4.30 % 15.50 % 15.61 %
C 60,428,000.00 - - - - 60,428,000.00 - 4.04 % 4.06 % 11.25 % 11.33 %
D 37,322,000.00 - - - - 37,322,000.00 - 2.49 % 2.51 % 8.63 % 8.68 %
E 26,659,000.00 - - - - 26,659,000.00 - 1.78 % 1.79 % 6.75 % 6.80 %
F 26,660,000.00 - - - - 26,660,000.00 - 1.78 % 1.79 % 4.88 % 4.91 %
G 14,218,000.00 - - - - 14,218,000.00 - 0.95 % 0.96 % 3.88 % 3.90 %
H 55,095,655.00 - - - - 55,095,655.00 - 3.68 % 3.71 % 0.00 % 0.00 %
R - - - - - - - 0.00 % 0.00 % 0.00 % 0.00 %
S - - - - - - - 0.00 % 0.00 % 0.00 % 0.00 %
VRR Interest 74,345,037.07 17,348.73 - - - 74,327,688.34 - 5.00 % 5.00 % 0.00 % 0.00 %
Total 1,486,900,726.17 346,974.61 - - - 1,486,553,751.56 - 99.98 % 100.00 %
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Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
RECONCILIATION DETAIL
August 16, 2024
SOURCE OF FUNDS ALLOCATION OF FUNDS
Interest Funds Available Scheduled Fees
Scheduled Interest 4,360,559.53 Servicing Fee 6,492.27
Prepayment Interest Shortfall - Trustee/Certificate Administrator Fee 7,554.27
Interest Adjustments - Operating Advisor Fee 1,062.71
ASER Amount - Asset Representations Reviewer Ongoing Fee 320.10
Realized Loss in Excess of Principal Balance - CREFC Intellectual Property Royalty License Fee 640.19
Total Interest Funds Available 4,360,559.53 Total Scheduled Fees 16,069.54
Principal Funds Available Additional Fees, Expenses, etc.
Scheduled Principal 346,974.61 Additional Servicing Fee -
Unscheduled Principal Collections - Special Servicing Fee 21,046.80
Net Liquidation Proceeds - Work-out Fee -
Repurchased Principal - Liquidation Fee -
Substitution Principal - Trust Fund Expenses -
Other Principal - Trust Advisor Expenses -
Reimbursement of Interest on Advances to the Servicer (13.58 )
Total Principal Funds Available 346,974.61
Borrower Reimbursable Trust Fund Expenses -
Other Funds Available
Other Expenses -
Yield Maintenance Charges -
Withdrawal of Withheld Amounts from the Interest Reserve Total Additional Fees, Expenses, etc. 21,033.22
Account -
Distributions
Deposit of Withheld Amounts to the Interest Reserve Account -
Interest Distribution 4,323,456.77
Total Other Funds Available - Principal Distribution 346,974.61
Yield Maintenance Charge Distribution -
Total Distributions 4,670,431.38
Total Funds Available 4,707,534.14 Total Funds Allocated 4,707,534.14
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Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
OTHER INFORMATION
Interest Reserve Account Information
August 16, 2024
Beginning Interest Reserve Account Balance 0.00
Deposit of Withheld Amounts to the Interest Reserve Account 0.00
Withdrawal of Withheld Amounts from the Interest Reserve Account 0.00
Ending Interest Reserve Account Balance 0.00
Collateral Information
% of Cut-Off Principal Balance Outstanding 99.325399 %
Controlling Class Information
Controlling Class is Class H.
The Controlling Class Representative is RREF IV Debt AIV, LP.
There Are No Disclosable Special Servicer Fees.
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Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
STRATIFICATION DETAIL
August 16, 2024
Anticipated Remaining Term
Anticipated Remaining Asset Ending Scheduled % of Wtd Avg
Term Range Count Balance Agg.Bal. WAC WAM DSCR
60 Months or Less 5 172,640,623.66 11.61 3.3818 30 2.593542
61 to 90 Months 57 1,313,913,127.90 88.39 3.4088 87 2.567004
91 Months or Greater 0 0.00 0.00 0.0000 0 0.000000
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
Debt Service Coverage Ratio
Debt Service Coverage Asset Ending Scheduled % of Wtd Avg
Ratio Range Count Balance Agg.Bal. WAC WAM DSCR
1.250 or Less 4 113,087,729.86 7.61 3.4236 87 0.905974
1.251 to 1.500 2 44,389,958.39 2.99 3.2865 30 1.477297
1.501 to 1.750 6 135,443,021.69 9.11 3.8717 85 1.588308
1.751 to 2.000 8 122,987,059.73 8.27 3.3844 87 1.889975
2.001 to 2.250 9 131,126,711.00 8.82 3.8596 87 2.139796
2.251 to 2.500 6 160,400,000.00 10.79 3.9071 76 2.367955
2.501 to 2.750 7 246,050,000.00 16.55 3.1797 84 2.661996
2.751 to 3.000 5 68,800,000.00 4.63 3.2727 86 2.850637
3.001 to 3.250 2 60,453,454.60 4.07 2.7280 86 3.159850
3.251 to 3.500 8 283,390,816.29 19.06 2.9927 71 3.363227
3.501 to 3.750 1 58,500,000.00 3.94 3.2400 88 3.570000
3.751 to 4.000 0 0.00 0.00 0.0000 0 0.000000
4.001 or Greater 4 61,925,000.00 4.17 3.9751 87 5.498317
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
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Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
STRATIFICATION DETAIL
August 16, 2024
Ending Schedule Balance
Ending Schedule Balance Asset Ending Scheduled % of Wtd Avg
Range Count Balance Agg.Bal. WAC WAM DSCR
1 to 5,000,000 5 15,761,224.43 1.06 3.6440 87 2.428952
10,000,001 to 15,000,000 4 51,265,000.00 3.45 3.5127 86 3.446776
15,000,001 to 20,000,000 12 213,385,057.32 14.35 3.9448 84 2.707125
20,000,001 to 25,000,000 5 112,279,591.86 7.55 3.2379 87 2.789271
25,000,001 to 30,000,000 2 58,150,000.00 3.91 2.8460 86 2.957317
30,000,001 to 35,000,000 4 129,665,359.62 8.72 3.0158 72 2.295130
35,000,001 to 40,000,000 4 157,600,000.00 10.60 3.6212 88 2.610152
40,000,001 to 45,000,000 3 127,489,958.39 8.58 3.1552 67 1.608049
45,000,001 to 50,000,000 3 143,600,000.00 9.66 3.5662 87 2.478997
5,000,001 to 10,000,000 14 107,281,194.50 7.22 3.7494 84 2.245650
50,000,001 to 55,000,000 1 55,000,000.00 3.70 3.3610 86 2.650000
55,000,001 to 60,000,000 3 170,076,365.44 11.44 3.4273 88 2.326977
60,000,001 to 65,000,000 0 0.00 0.00 0.0000 0 0.000000
65,000,001 to 70,000,000 1 70,000,000.00 4.71 2.7920 87 3.320000
70,000,001 to 75,000,000 1 75,000,000.00 5.05 2.8380 27 3.440000
75,000,001 to 80,000,000 0 0.00 0.00 0.0000 0 0.000000
80,000,001 to 85,000,000 0 0.00 0.00 0.0000 0 0.000000
85,000,000+ 0 0.00 0.00 0.0000 0 0.000000
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
Reports Available at sf.citidirect.com v. 21.09.28 Page 10 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
STRATIFICATION DETAIL
August 16, 2024
Loan Rate
Asset Ending Scheduled % of Wtd Avg
Loan Rate Range Count Balance Agg.Bal. WAC WAM DSCR
4.00 or Less 57 1,422,828,086.29 95.71 3.3418 82 2.518564
4.01 to 4.25 1 2,400,000.00 0.16 4.1000 87 1.430000
4.26 to 4.50 3 41,350,665.27 2.78 4.3647 34 2.109749
4.51 to 4.75 0 0.00 0.00 0.0000 0 0.000000
4.76 to 5.00 0 0.00 0.00 0.0000 0 0.000000
5.01 to 5.25 0 0.00 0.00 0.0000 0 0.000000
5.26 to 5.50 0 0.00 0.00 0.0000 0 0.000000
5.51 to 5.75 0 0.00 0.00 0.0000 0 0.000000
5.76 to 6.00 1 19,975,000.00 1.34 5.8870 87 7.330000
6.01 to 6.25 0 0.00 0.00 0.0000 0 0.000000
6.26 to 6.50 0 0.00 0.00 0.0000 0 0.000000
6.51 to 6.75 0 0.00 0.00 0.0000 0 0.000000
6.76 to 7.00 0 0.00 0.00 0.0000 0 0.000000
7.01 or Greater 0 0.00 0.00 0.0000 0 0.000000
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
Property Type
Asset Ending Scheduled % of Wtd Avg
Property Type Range Count Balance Agg.Bal. WAC WAM DSCR
Industrial 7 130,885,000.00 8.80 3.7214 87 2.423047
Lodging 0 0.00 0.00 0.0000 0 0.000000
Mixed Use 7 231,940,816.29 15.60 3.2162 87 2.757180
Multifamily 13 269,066,024.89 18.10 3.3328 86 1.992780
Office 14 408,783,425.17 27.50 3.2514 70 2.664132
Other 7 185,736,669.39 12.49 3.4712 74 2.461122
Retail 12 234,981,815.82 15.81 3.6798 86 3.070070
Self Storage 1 6,660,000.00 0.45 3.5100 88 2.810000
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
Reports Available at sf.citidirect.com v. 21.09.28 Page 11 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
STRATIFICATION DETAIL
August 16, 2024
Remaining Amortization Term
Remaining Amortization Asset Ending Scheduled % of Wtd Avg
Term Range Count Balance Agg.Bal. WAC WAM DSCR
240 Months or Less 50 1,211,772,527.29 81.52 3.4482 81 2.786519
241 to 270 Months 0 0.00 0.00 0.0000 0 0.000000
271 to 300 Months 0 0.00 0.00 0.0000 0 0.000000
301 Months or Greater 12 274,781,224.27 18.48 3.2183 77 1.615629
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
Seasoning
Asset Ending Scheduled % of Wtd Avg
Seasoning Range Count Balance Agg.Bal. WAC WAM DSCR
12 Months or Less 0 0.00 0.00 0.0000 0 0.000000
13 to 24 Months 0 0.00 0.00 0.0000 0 0.000000
25 to 36 Months 62 1,486,553,751.56 100.00 3.4057 80 2.570086
37 to 48 Months 0 0.00 0.00 0.0000 0 0.000000
49 Months or Greater 0 0.00 0.00 0.0000 0 0.000000
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
Reports Available at sf.citidirect.com v. 21.09.28 Page 12 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
STRATIFICATION DETAIL
August 16, 2024
State
Asset Ending Scheduled % of Wtd Avg
State Range Count Balance Agg.Bal. WAC WAM DSCR
Arizona 1 55,000,000.00 3.70 3.3610 86 2.650000
California 8 145,450,000.00 9.78 3.2677 86 3.055761
Connecticut 2 94,000,000.00 6.32 3.2570 88 2.600000
Florida 3 59,150,000.00 3.98 3.8915 87 2.355249
Georgia 2 21,575,000.00 1.45 5.7789 87 6.934728
Illinois 1 42,500,000.00 2.86 3.7800 88 1.510000
Indiana 1 8,200,000.00 0.55 3.3090 88 4.270000
Kansas 1 9,830,000.00 0.66 3.8900 87 1.960000
Massachusetts 6 211,290,816.29 14.21 2.7623 86 3.140674
Michigan 2 12,700,000.00 0.85 3.6859 88 2.603307
Mississippi 1 9,350,665.27 0.63 4.3200 51 1.510000
N/A 6 192,736,669.39 12.97 3.4967 74 2.496881
New Jersey 5 176,750,251.34 11.89 2.8272 61 2.279499
New York 9 175,728,454.60 11.82 3.6019 87 2.152762
North Carolina 1 13,250,000.00 0.89 3.8080 88 3.400000
Ohio 3 32,080,000.00 2.16 3.8937 69 2.624782
Oregon 1 40,000,000.00 2.69 3.6410 88 3.380000
Rhode Island 2 58,250,000.00 3.92 3.7908 88 2.317940
Tennessee 1 6,660,000.00 0.45 3.5100 88 2.810000
Texas 3 72,225,781.59 4.86 3.8148 88 0.987959
Utah 1 30,400,000.00 2.04 4.3750 27 2.300000
Vermont 1 6,161,113.08 0.41 3.6000 87 1.140000
Virginia 1 13,265,000.00 0.89 3.1800 84 2.930000
Total 62 1,486,553,751.56 100.00 3.4057 80 2.570086
Reports Available at sf.citidirect.com v. 21.09.28 Page 13 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
MORTGAGE LOAN DETAIL
August 16, 2024
Prop Paid Beginning Ending Payment Workout Mod
Type Through Gross Interest Principal Scheduled Scheduled Maturity Status Strategy Code
Loan ID OMCR (1) City State Date Coupon Payment Payment Balance Balance Date (2 ) (3 ) (4 )
30508068 10 N/A 08/06/2024 3.24000 % 117,352.09 71,724.00 42,061,682.39 41,989,958.39 11/06/2026 0 0 0
30508200 11 A1 MF Harrison NJ 08/01/2024 2.45500 % 90,903.19 - 43,000,000.00 43,000,000.00 12/01/2031 0 0 0
30508148 12 MF IL 07/06/2024 3.78000 % 138,337.50 - 42,500,000.00 42,500,000.00 12/06/2031 B 98 0
30507887 13 A1 IN Town of Burrillville RI 07/06/2024 3.71000 % 127,788.89 - 40,000,000.00 40,000,000.00 12/06/2031 B 0 0
30508193 14 A1 RT Tualatin OR 08/05/2024 3.64100 % 125,412.22 - 40,000,000.00 40,000,000.00 12/05/2031 0 0 0
30320459 15 A1 IN 08/06/2024 3.85500 % 132,783.33 - 40,000,000.00 40,000,000.00 12/06/2031 0 0 0
30508186 16 MF Fort Lee NJ 08/06/2024 2.62000 % 76,377.90 41,879.10 33,853,784.12 33,811,905.02 12/06/2031 0 0 0
30508108 17 MF Kew Garden Hills NY 08/06/2024 2.47000 % 64,906.84 63,015.69 30,516,470.29 30,453,454.60 11/06/2031 0 0 0
30507803 18 OF Lehi UT 08/01/2024 4.37500 % 114,527.78 - 30,400,000.00 30,400,000.00 11/01/2026 0 0 0
30507941 19 A2 RT Concord CA 08/05/2024 2.99000 % 77,241.67 - 30,000,000.00 30,000,000.00 10/05/2031 0 0 0
30508000 20 N/A 08/06/2024 3.94000 % 55,121.48 - 16,246,711.00 16,246,711.00 11/06/2031 0 0 0
30507995 21 IN Oregon OH 08/06/2024 3.97000 % 28,647.96 - 8,380,000.00 8,380,000.00 11/06/2031 0 0 0
30508009 22 OF Beverly Hills CA 08/06/2024 2.90100 % 57,955.53 - 23,200,000.00 23,200,000.00 11/06/2031 0 0 0
30508065 23 MU New York NY 08/06/2024 3.91000 % 77,776.42 - 23,100,000.00 23,100,000.00 11/06/2031 0 0 0
30508219 24 OF Sunnyvale CA 08/06/2024 2.94800 % 53,309.67 - 21,000,000.00 21,000,000.00 12/06/2031 0 0 0
30508187 25 N/A New York NY 08/06/2024 3.67000 % 66,365.83 - 21,000,000.00 21,000,000.00 12/06/2031 0 0 0
30508028 26 A3 RT Los Angeles CA 08/06/2024 3.49000 % 60,105.56 - 20,000,000.00 20,000,000.00 10/06/2031 0 0 0
30508006 27 RT Morrow GA 08/06/2024 5.88700 % 101,260.49 - 19,975,000.00 19,975,000.00 11/06/2031 0 0 0
30508080 28 A2 RT Audubon NJ 08/06/2024 3.72000 % 57,558.95 30,109.89 17,968,456.21 17,938,346.32 08/06/2031 0 0 0
30508197 29 MH El Cajon CA 08/06/2024 3.84000 % 61,173.33 - 18,500,000.00 18,500,000.00 12/06/2031 0 0 0
30320453 2 A1 OF Greenwich CT 08/06/2024 3.25700 % 158,181.63 - 56,400,000.00 56,400,000.00 12/06/2031 0 0 0
30320454 2 A2 OF Greenwich CT 08/06/2024 3.25700 % 105,454.42 - 37,600,000.00 37,600,000.00 12/06/2031 0 0 0
30508145 30 MF North Providence RI 08/01/2024 3.96800 % 62,358.22 - 18,250,000.00 18,250,000.00 12/01/2031 0 0 0
30508188 31 N/A 08/06/2024 3.32000 % 51,460.00 - 18,000,000.00 18,000,000.00 12/06/2031 0 0 0
30508047 32 N/A 08/06/2024 3.91000 % 60,605.00 - 18,000,000.00 18,000,000.00 11/06/2031 0 0 0
30508070 33 IN Haverstraw NY 08/06/2024 3.48000 % 53,565.42 - 17,875,000.00 17,875,000.00 12/06/2031 0 0 0
30320461 34 MF Los Angeles CA 08/06/2024 3.76000 % 56,984.89 - 17,600,000.00 17,600,000.00 11/06/2031 0 0 0
30507953 35 OF Blue Ash OH 08/01/2024 3.87100 % 53,000.44 - 15,900,000.00 15,900,000.00 11/01/2028 0 0 0
30508142 36 MU Jackson Heights NY 08/06/2024 3.98000 % 51,751.06 - 15,100,000.00 15,100,000.00 12/06/2031 0 0 0
30530175 37 RT Vinton VA 08/06/2024 3.18000 % 36,323.99 - 13,265,000.00 13,265,000.00 08/06/2031 0 0 0
30508066 38 RT Gastonia NC 08/06/2024 3.80800 % 43,448.22 - 13,250,000.00 13,250,000.00 12/06/2031 0 0 0
30508049 39 OF Pomona CA 08/06/2024 3.10000 % 34,035.42 - 12,750,000.00 12,750,000.00 11/06/2031 0 0 0
Reports Available at sf.citidirect.com v. 21.09.28 Page 14 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
MORTGAGE LOAN DETAIL
August 16, 2024
Prop Paid Beginning Ending Payment Workout Mod
Type Through Gross Interest Principal Scheduled Scheduled Maturity Status Strategy Code
Loan ID OMCR (1) City State Date Coupon Payment Payment Balance Balance Date (2 ) (3 ) (4 )
30320455 3 A1 OF Plainsboro NJ 08/06/2024 2.83800 % 183,287.50 - 75,000,000.00 75,000,000.00 04/06/2031 0 0 0
30508195 40 N/A Nanuet NY 08/01/2024 3.99300 % 41,261.00 - 12,000,000.00 12,000,000.00 12/01/2031 0 0 0
30508069 41 RT Austin TX 08/06/2024 3.83900 % 33,085.92 16,073.01 10,008,429.43 9,992,356.42 12/06/2031 0 0 0
30508046 42 IN Topeka KS 08/06/2024 3.89000 % 32,927.77 - 9,830,000.00 9,830,000.00 11/06/2031 0 0 0
30508052 43 MF Jackson MS 08/06/2024 4.32000 % 34,835.72 13,776.84 9,364,442.11 9,350,665.27 11/06/2028 0 0 0
30530176 44 IN Indianapolis IN 08/06/2024 3.30900 % 23,365.22 - 8,200,000.00 8,200,000.00 12/06/2031 0 0 0
30530172 45 RT Mason OH 08/06/2024 3.85800 % 25,912.90 - 7,800,000.00 7,800,000.00 11/06/2031 0 0 0
30508007 46 OF West Palm Beach FL 08/06/2024 3.35000 % 21,779.65 - 7,550,000.00 7,550,000.00 11/06/2031 0 0 0
30530177 47 OF Houston TX 08/06/2024 3.89600 % 23,711.09 10,562.53 7,067,622.26 7,057,059.73 12/06/2031 0 0 0
30508144 48 MF Ann Arbor MI 08/01/2024 3.65000 % 22,001.39 - 7,000,000.00 7,000,000.00 12/01/2031 0 0 0
30508051 49 MF Orange NJ 08/06/2024 3.71000 % 22,363.06 - 7,000,000.00 7,000,000.00 11/06/2031 0 0 0
30507836 4 A5 OF Cambridge MA 08/05/2024 2.69250 % 81,148.96 - 35,000,000.00 35,000,000.00 10/05/2031 0 0 0
30507837 4 A6 OF Cambridge MA 08/05/2024 2.69250 % 65,266.95 - 28,150,000.00 28,150,000.00 10/05/2031 0 0 0
30508185 5 N/A 08/06/2024 3.24000 % 163,215.00 - 58,500,000.00 58,500,000.00 12/06/2031 0 0 0
30508158 50 SS TN 08/06/2024 3.51000 % 20,129.85 - 6,660,000.00 6,660,000.00 12/06/2031 0 0 0
30508073 51 IN Yonkers NY 08/06/2024 3.58000 % 20,346.33 - 6,600,000.00 6,600,000.00 12/06/2031 0 0 0
30508106 52 RT Springfield VT 08/06/2024 3.60000 % 19,131.75 10,420.20 6,171,533.28 6,161,113.08 11/06/2031 0 0 0
30508192 53 MF Southfield MI 08/06/2024 3.73000 % 18,308.08 - 5,700,000.00 5,700,000.00 12/06/2031 0 0 0
30508218 54 MF Brooklyn NY 08/06/2024 3.64000 % 12,537.78 - 4,000,000.00 4,000,000.00 12/06/2031 0 0 0
30508010 55 OF Melbourne FL 08/06/2024 3.98000 % 12,338.00 - 3,600,000.00 3,600,000.00 11/06/2031 0 0 0
30320462 56 MF Los Angeles CA 08/06/2024 4.10000 % 8,473.33 - 2,400,000.00 2,400,000.00 11/06/2031 0 0 0
30508110 57 RT Newnan GA 08/06/2024 4.43000 % 6,103.56 - 1,600,000.00 1,600,000.00 11/06/2031 0 0 0
30508191 6 OF TX 08/06/2024 3.80000 % 180,841.91 89,413.35 55,265,778.79 55,176,365.44 12/06/2031 0 98 0
30530169 7 A1 RT Tucson AZ 08/06/2024 3.36100 % 159,180.69 - 55,000,000.00 55,000,000.00 10/06/2031 0 0 0
30508159 8 A1 MF FL 08/06/2024 3.97000 % 164,093.33 - 48,000,000.00 48,000,000.00 12/06/2031 0 0 0
30508147 9 MU New York NY 08/01/2024 3.99000 % 156,674.00 - 45,600,000.00 45,600,000.00 12/01/2031 0 0 0
30320449 A-1-2 MU Cambridge MA 08/06/2024 2.79200 % 168,295.56 - 70,000,000.00 70,000,000.00 11/06/2036 0 0 0
30320450 A-1-4 MU Cambridge MA 08/06/2024 2.79200 % 120,211.11 - 50,000,000.00 50,000,000.00 11/06/2036 0 0 0
30320451 A-1-9 MU Cambridge MA 08/06/2024 2.79200 % 10,004.51 - 4,161,224.43 4,161,224.43 11/06/2036 0 0 0
30320452 A-3-3 MU Cambridge MA 08/06/2024 2.79200 % 57,652.27 - 23,979,591.86 23,979,591.86 11/06/2036 0 0 0
Total Count = 62 4,360,559.53 346,974.61 1,486,900,726.17 1,486,553,751.56
Reports Available at sf.citidirect.com v. 21.09.28 Page 15 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
NOI DETAIL
August 16, 2024
Property Ending Preceding Most Most Recent Most Recent
Type Scheduled Fiscal Recent Financial As of Financial Asof
Loan ID OMCR (1) City State Balance Year NOI NOI Start Date End Date
30508068 10 N/A 41,989,958.39 3,965,564.22 3,973,862.97 Not Available Not Available
30508200 11 A1 MF Harrison NJ 43,000,000.00 4,629,836.76 1,225,763.88 01/01/2024 03/31/2024
30508148 12 MF IL 42,500,000.00 2,598,042.69 2,598,042.69 Not Available Not Available
30507887 13 A1 IN Town of Burrillville RI 40,000,000.00 5,925,390.00 5,915,410.67 Not Available Not Available
30508193 14 A1 RT Tualatin OR 40,000,000.00 8,052,027.31 8,052,027.31 Not Available Not Available
30320459 15 A1 IN 40,000,000.00 5,645,332.48 5,626,332.86 Not Available Not Available
30508186 16 MF Fort Lee NJ 33,811,905.02 1,965,432.04 1,672,007.04 Not Available Not Available
30508108 17 MF Kew Garden Hills NY 30,453,454.60 5,008,594.27 5,008,594.27 Not Available Not Available
30507803 18 OF Lehi UT 30,400,000.00 3,274,838.95 3,274,838.95 Not Available Not Available
30507941 19 A2 RT Concord CA 30,000,000.00 11,090,788.91 2,469,129.13 01/01/2024 03/31/2024
30508000 20 N/A 16,246,711.00 1,467,944.65 1,499,984.97 Not Available Not Available
30507995 21 IN Oregon OH 8,380,000.00 723,690.00 723,690.00 Not Available Not Available
30508009 22 OF Beverly Hills CA 23,200,000.00 2,566,688.75 1,894,354.76 Not Available Not Available
30508065 23 MU New York NY 23,100,000.00 1,860,051.28 1,860,051.28 Not Available Not Available
30508219 24 OF Sunnyvale CA 21,000,000.00 2,527,633.13 687,152.98 01/01/2024 03/31/2024
30508187 25 N/A New York NY 21,000,000.00 1,263,319.11 1,263,319.11 Not Available Not Available
30508028 26 A3 RT Los Angeles CA 20,000,000.00 8,050,769.98 1,952,059.20 01/01/2024 03/31/2024
30508006 27 RT Morrow GA 19,975,000.00 10,060,183.13 9,371,569.69 Not Available Not Available
30508080 28 A2 RT Audubon NJ 17,938,346.32 3,485,676.09 743,578.79 01/01/2024 03/31/2024
30508197 29 MH El Cajon CA 18,500,000.00 1,619,335.78 1,619,335.78 Not Available Not Available
30320453 2 A1 OF Greenwich CT 56,400,000.00 8,654,703.01 8,805,398.87 04/01/2023 03/31/2024
30320454 2 A2 OF Greenwich CT 37,600,000.00 8,654,703.01 8,805,398.87 04/01/2023 03/31/2024
30508145 30 MF North Providence RI 18,250,000.00 1,637,220.20 1,637,220.20 Not Available Not Available
30508188 31 N/A 18,000,000.00 1,788,963.12 1,785,563.28 Not Available Not Available
30508047 32 N/A 18,000,000.00 1,703,533.44 1,703,533.44 Not Available Not Available
30508070 33 IN Haverstraw NY 17,875,000.00 2,019,564.48 1,906,275.94 01/01/2024 06/30/2024
30320461 34 MF Los Angeles CA 17,600,000.00 1,336,642.15 1,336,642.15 Not Available Not Available
30507953 35 OF Blue Ash OH 15,900,000.00 1,736,441.82 1,736,441.82 Not Available Not Available
30508142 36 MU Jackson Heights NY 15,100,000.00 1,253,466.40 1,253,466.40 Not Available Not Available
30530175 37 RT Vinton VA 13,265,000.00 1,313,472.59 335,433.59 01/01/2024 03/31/2024
30508066 38 RT Gastonia NC 13,250,000.00 1,721,945.77 1,831,376.24 01/01/2024 06/30/2024
30508049 39 OF Pomona CA 12,750,000.00 2,059,678.73 2,146,639.20 01/01/2024 06/30/2024
Reports Available at sf.citidirect.com v. 21.09.28 Page 16 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
NOI DETAIL
August 16, 2024
Property Ending Preceding Most Most Recent Most Recent
Type Scheduled Fiscal Recent Financial As of Financial Asof
Loan ID OMCR (1) City State Balance Year NOI NOI Start Date End Date
30320455 3 A1 OF Plainsboro NJ 75,000,000.00 21,283,911.55 21,000,792.52 07/01/2023 06/30/2024
30508195 40 N/A Nanuet NY 12,000,000.00 1,014,993.68 1,014,993.68 Not Available Not Available
30508069 41 RT Austin TX 9,992,356.42 1,035,429.11 1,035,429.11 Not Available Not Available
30508046 42 IN Topeka KS 9,830,000.00 761,043.17 761,043.17 Not Available Not Available
30508052 43 MF Jackson MS 9,350,665.27 953,791.77 905,102.16 04/01/2023 03/31/2024
30530176 44 IN Indianapolis IN 8,200,000.00 1,195,678.00 1,322,281.39 01/01/2024 06/30/2024
30530172 45 RT Mason OH 7,800,000.00 933,914.99 933,914.99 Not Available Not Available
30508007 46 OF West Palm Beach FL 7,550,000.00 618,510.75 607,771.02 01/01/2024 06/30/2024
30530177 47 OF Houston TX 7,057,059.73 623,864.97 620,057.89 Not Available Not Available
30508144 48 MF Ann Arbor MI 7,000,000.00 813,613.23 869,079.85 Not Available Not Available
30508051 49 MF Orange NJ 7,000,000.00 452,246.27 432,706.54 Not Available Not Available
30507836 4 A5 OF Cambridge MA 35,000,000.00 30,874,106.83 7,906,578.80 01/01/2024 03/31/2024
30507837 4 A6 OF Cambridge MA 28,150,000.00 30,874,106.83 7,906,578.80 01/01/2024 03/31/2024
30508185 5 N/A 58,500,000.00 7,066,477.82 1,920,017.02 01/01/2024 03/31/2024
30508158 50 SS TN 6,660,000.00 675,949.25 675,949.25 Not Available Not Available
30508073 51 IN Yonkers NY 6,600,000.00 579,836.89 579,836.89 Not Available Not Available
30508106 52 RT Springfield VT 6,161,113.08 575,823.60 542,311.73 Not Available Not Available
30508192 53 MF Southfield MI 5,700,000.00 439,953.53 405,858.94 01/01/2024 06/30/2024
30508218 54 MF Brooklyn NY 4,000,000.00 366,271.14 366,271.14 Not Available Not Available
30508010 55 OF Melbourne FL 3,600,000.00 323,233.49 322,683.46 01/01/2024 06/30/2024
30320462 56 MF Los Angeles CA 2,400,000.00 111,385.90 36,097.69 01/01/2024 03/31/2024
30508110 57 RT Newnan GA 1,600,000.00 149,593.92 149,593.92 Not Available Not Available
30508191 6 OF TX 55,176,365.44 5,365,853.00 3,190,886.00 01/01/2024 03/31/2024
30530169 7 A1 RT Tucson AZ 55,000,000.00 9,335,258.08 2,317,979.29 01/01/2024 03/31/2024
30508159 8 A1 MF FL 48,000,000.00 8,193,152.53 8,193,152.53 Not Available Not Available
30508147 9 MU New York NY 45,600,000.00 3,108,391.69 761,158.68 01/01/2024 03/31/2024
30320449 A-1-2 MU Cambridge MA 70,000,000.00 76,535,443.00 76,535,443.00 Not Available Not Available
30320450 A-1-4 MU Cambridge MA 50,000,000.00 76,535,443.00 76,535,443.00 Not Available Not Available
30320451 A-1-9 MU Cambridge MA 4,161,224.43 76,535,443.00 76,535,443.00 Not Available Not Available
30320452 A-3-3 MU Cambridge MA 23,979,591.86 76,535,443.00 76,535,443.00 Not Available Not Available
Total Count = 62 1,486,553,751.56 553,529,638.24 465,634,394.79
Reports Available at sf.citidirect.com v. 21.09.28 Page 17 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
DELINQUENCY LOAN DETAIL
August 16, 2024
Actual Paid Current P&I Total P&I Cumulative Other Expense Payment Workout Most Recent
Principal Through Advances Advances Accrued Unpaid Advances Status Strategy Special Serv Foreclosure Bankruptcy REO
Loan ID OMCR Balance Date (Net of ASER) Outstanding Interest Advances Outstanding (2 ) (3 ) Transfer Date Date Date Date
30508148 12 42,500,000.00 07/06/2024 138,246.01 138,246.01 - - B 98 03/15/2024
30507887 13 A1 40,000,000.00 07/06/2024 127,702.78 127,702.78 268.69 2,500.00 B 0
Total Count = 2 82,500,000.00 265,948.79 265,948.79 268.69 2,500.00
Reports Available at sf.citidirect.com v. 21.09.28 Page 18 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
COLLATERAL PERFORMANCE - DELINQUENCY AND LOAN STATUS DETAIL
August 16, 2024
Delinquent
(Does not include loans in Bankruptcy, Foreclosure, or REO)
30 Day 60 Day 90 Day 120 + Day Bankruptcy Foreclosure REO
Distribution
Date Count Balance Count Balance Count Balance Count Balance Count Balance Count Balance Count Balance
0 0 0 0 0 0 0 0 0 0 0 0 0 0
08/16/2024
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
1 9,364,442 0 0 0 0 0 0 0 0 0 0 0 0
07/17/2024
1.6 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
2 98,500,000 0 0 0 0 0 0 0 0 0 0 0 0
06/17/2024
3.2 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
05/17/2024
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
04/17/2024
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
03/15/2024
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
02/16/2024
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
01/18/2024
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
12/15/2023
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
11/17/2023
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
10/17/2023
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
0 0 0 0 0 0 0 0 0 0 0 0 0 0
09/15/2023
0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 % 0.0 %
Reports Available at sf.citidirect.com v. 21.09.28 Page 19 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
APPRAISAL REDUCTION DETAIL
August 16, 2024
Beginning Ending Appraisal Appraisal Most Recent Cumulative
Loan ID OMCR Property Name Scheduled Balance Scheduled Balance Reduction Amount Reduction Date ASER Amount ASER Amount
No Loans with Appraisal Reduction Activity.
Reports Available at sf.citidirect.com v. 21.09.28 Page 20 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
HISTORICAL APPRAISAL REDUCTION DETAIL
August 16, 2024
Distribution Beginning Ending Appraisal Appraisal Most Recent Cumulative
Date Loan ID OMCR Property Name Scheduled Balance Scheduled Balance Reduction Amount Reduction Date ASER Amount ASER Amount
No Loans with Appraisal Reduction Activity.
Reports Available at sf.citidirect.com v. 21.09.28 Page 21 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
LOAN MODIFICATION DETAIL
August 16, 2024
Modification Modification
Loan ID OMCR Property Name Date Code (4)
No Loans with Modification Activity to Report.
Reports Available at sf.citidirect.com v. 21.09.28 Page 22 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
HISTORICAL LOAN MODIFICATION DETAIL
August 16, 2024
Distribution Modification Modification
Date Loan ID OMCR Property Name Date Code (4)
No Loans with Modification Activity to Report.
Reports Available at sf.citidirect.com v. 21.09.28 Page 23 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
SPECIALLY SERVICED LOAN DETAIL
August 16, 2024
Special Servicing Ending Ending Most Most Recent Most Recent Most Recent
Workout Fee Amount Scheduled Actual Recent Valuation Special Servicer Master Servicer
Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
30508148 12 98 9,149.31 42,500,000.00 42,500,000.00 63,800,000.00 10/14/2021 03/15/2024
30508191 6 98 11,897.49 55,176,365.44 55,176,365.44 85,670,000.00 06/23/2023
Total Count = 2 21,046.80 97,676,365.44 97,676,365.44 149,470,000.00
Reports Available at sf.citidirect.com v. 21.09.28 Page 24 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
HISTORICAL SPECIALLY SERVICED LOANS
August 16, 2024
Special Servicing Ending Ending Most Most Recent Most Recent Most Recent
Distribution Workout Fee Amount Scheduled Actual Recent Valuation Special Servicer Master Servicer
Date Loan ID OMCR Strategy (3) Plus Adjustments Balance Balance Value Date Transfer Date Return Date
08/16/2024 30508148 12 98 9,149.31 42,500,000.00 42,500,000.00 63,800,000.00 10/14/2021 03/15/2024
07/17/2024 30508148 12 98 8,854.17 42,500,000.00 42,500,000.00 63,800,000.00 10/14/2021 03/15/2024
06/17/2024 30508148 12 98 9,149.31 42,500,000.00 42,500,000.00 63,800,000.00 10/14/2021 03/15/2024
05/17/2024 30508148 12 98 8,854.17 42,500,000.00 42,500,000.00 63,800,000.00 10/14/2021 03/15/2024
04/17/2024 30508148 12 98 6,493.06 42,500,000.00 42,500,000.00 63,800,000.00 10/14/2021 03/15/2024
08/16/2024 30508191 6 98 11,897.49 55,176,365.44 55,176,365.44 85,670,000.00 06/23/2023
07/17/2024 30508191 6 98 11,533.48 55,265,778.79 55,265,778.79 85,670,000.00 06/23/2023
06/17/2024 30508191 6 98 11,937.05 55,360,725.09 55,360,725.09 85,670,000.00 06/23/2023
05/17/2024 30508191 6 98 11,571.65 55,449,537.14 55,449,537.14 85,670,000.00 06/23/2023
04/17/2024 30508191 6 98 11,976.36 55,543,903.37 55,543,903.37 85,670,000.00 06/23/2023
03/15/2024 30508191 6 98 11,223.76 55,632,117.98 55,632,117.98 85,670,000.00 06/23/2023
02/16/2024 30508191 6 98 12,016.67 55,731,772.09 55,819,373.95 85,670,000.00 06/23/2023
01/18/2024 30508191 6 98 12,035.47 55,819,373.95 55,819,373.95 85,670,000.00 06/23/2023
12/15/2023 30508191 6 98 11,666.59 55,906,690.10 55,906,690.10 85,670,000.00 06/23/2023
11/17/2023 30508191 6 98 12,074.14 55,999,613.25 55,999,613.25 85,670,000.00 06/23/2023
10/17/2023 30508191 6 98 11,703.90 56,086,341.54 56,086,341.54 85,670,000.00 06/23/2023
09/15/2023 30508191 6 98 12,112.57 56,178,697.59 56,178,697.59 85,670,000.00 06/23/2023
08/17/2023 30508191 6 98 12,131.05 56,264,841.78 56,350,705.01 85,670,000.00 06/23/2023
07/17/2023 30508191 6 98 5,095.48 56,350,705.01 56,442,226.55 85,670,000.00 06/23/2023
Reports Available at sf.citidirect.com v. 21.09.28 Page 25 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
UNSCHEDULED PRINCIPAL DETAIL
August 16, 2024
Liquidation / Liquid / Prepay Principal Principal Prepayment Interest Prepayment Yield Maintenance
Loan ID OMCR Prepayment Date Code (5) Collections Adjustments Excess / (Shortfall) Penalties (PPP) Penalties (YM)
No Loans with Unscheduled Principal Activity to Report.
Reports Available at sf.citidirect.com v. 21.09.28 Page 26 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
HISTORICAL UNSCHEDULED PRINCIPAL DETAIL
August 16, 2024
Distribution Liquidation / Liquid / Prepay Principal Principal Prepayment Interest Prepayment Yield Maintenance
Date Loan ID OMCR Prepayment Date Code (5) Collections Adjustments Excess / (Shortfall) Penalties (PPP) Penalties (YM)
No Loans with Unscheduled Principal Activity to Report.
Reports Available at sf.citidirect.com v. 21.09.28 Page 27 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
LIQUIDATED LOAN DETAIL
August 16, 2024
Beginning Most Liquidation Net Net Realized Date of Loss with
Scheduled Recent Sales Proceeds Liquidation Proceeds Loss to Current Current Cumulative Cumulative
Loan ID OMCR Balance Value Price Received Expense Available Trust Adj. to Loan Adj. to Loan Adj. to Loan Adj. to Trust
No Loans liquidated to Report.
Reports Available at sf.citidirect.com v. 21.09.28 Page 28 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
HISTORICAL LIQUIDATED LOAN
August 16, 2024
Beginning Most Liquidation Net Net Realized Date of Loss with
Distribution Scheduled Recent Sales Proceeds Liquidation Proceeds Loss to Current Current Cumulative Cumulative
Date Loan ID OMCR Balance Value Price Received Expense Available Trust Adj. to Loan Adj. to Loan Adj. to Loan Adj. to Trust
No Loans liquidated to Report.
Reports Available at sf.citidirect.com v. 21.09.28 Page 29 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
CREFC® INVESTOR REPORTING PACKAGE LEGENDS
August 16, 2024
1|CREFC Investor Reporting Package Legends
Property Type (1) Workout Strategy (3) Liquidation/Prepayment Code (5)
MF Multifamily 1 Modification 1 Partial Liquidation (Curtailment)
RT Retail 2 Foreclosure 2 Payoff Prior To Maturity
HC HealthCare 3 Bankruptcy 3 Disposition / Liquidation
IN Industrial 4 Extension 4 Repurchase / Substitution
MH Mobile Home Park 5 Note Sale 5 Full Payoff At Maturity
OF Office 6 DPO 6 DPO
MU Mixed Use 7 REO 7 Liquidation prior to 7/1/2006
LO Lodging 8 Resolved 8 Payoff With Penalty
SS Self Storage 9 Pending Return to Master Servicer 9 Payoff With Yield Maintenance
SE Securities 10 Deed In Lieu of Foreclosure 10 Curtailment With Penalty
CH Cooperative Housing 11 Full Payoff 11 Curtailment With Yield Maintenance
ZZ Missing Information 12 Reps and Warranties
SF SF 13 TBD
WH Warehouse 98 Other
OT Other
Modification Code (4)
Payment Status of Loan (2)
1 Maturity Date Extension
A In Grace Period 2 Amortization Change
B Late, but less than 30 Days 3 Principal Write-Off
0 Current 4 Blank (formerly Combination)
1 30-59 Days Delinquent 5 Temporary Rate Reduction
2 60-89 Days Delinquent 6 Capitalization of Interest
3 90-120 Days Delinquent 7 Capitalization of Taxes
4 Performing Matured Balloon 8 Other
5 Non Performing Matured Balloon 9 Combination
6 121+ Days Delinquent 10 Forbearance
Reports Available at sf.citidirect.com v. 21.09.28 Page 30 of 31 © Copyright 2024 Citigroup

Benchmark 2021-B31 Mortgage Trust
Commercial Mortgage Pass Through Certificates, Series 2021-B31
NOTES
August 16, 2024
No Notes available for this deal at this time.
Reports Available at sf.citidirect.com v. 21.09.28 Page 31 of 31 © Copyright 2024 Citigroup