Kilambi News
Monday, October 19, 2026

645 North Michigan Ave (Benchmark 2023-B40 Mortgage Trust)

Page built October 19, 2026

Property, terms, monthly financial history and surveillance record for a loan in Benchmark 2023-B40 Mortgage Trust.

Data as of loan data through September 2026; ratings as held in the dataset at 2026-10-01

← Benchmark 2023-B40 Mortgage Trust · Loan annex · CMBS market

Deal
Benchmark 2023-B40 Mortgage Trust
Current balance
$37.1M (September 2026)
Share of deal
7.9%
Status
Current
DSCR (latest)
1.23
Occupancy (latest)
90%
Scheduled maturity
2033-12-06

Property and terms

Property645 North Michigan Ave
Address645 North Michigan Ave; Chicago, IL 60611
Property typeMixed use
Units, beds or keysnot yet reported
Net rentable square feet193,031
Year built1962
Year last renovated2022
Original balance$38.0M
Current balance$37.1M (September 2026)
Share of deal balance7.9%
Interest rate at origination7.62%
Current interest rate7.62%
Origination date11-07-2023
Original term120 months
Amortization term360 months
Interest-only periodnot yet reported
Scheduled maturity2033-12-06
Prepayment lockout end06-05-2033
Yield maintenance endnot yet reported
ServicerMidland Loan Services
Loan servicernot yet reported
OriginatorCiti Real Estate Funding Inc.
Current statusCurrent
Specially serviced nowNo
DefeasedNo

Valuation

BasisAmountDateSource (as filed)
At securitization$95.0M08-23-2023MAI
Most recent reported$95.0M2023-08-23MAI

Change from securitization to the most recent reported valuation: 0.0%.

Largest tenants

TenantSquare feetLease expiration
NORTHWESTERN UNIVERSITY, COMMERCIAL51,63704-30-2028
NORTHWESTERN UNIVERSITY,37,65803-31-2031
S-FER INTERNATIONAL INC, BILL9,58603-31-2032

The three largest tenants as reported in the latest asset-level record.

Monthly history

$0$10,260,000$20,520,000$30,780,000$41,040,0002024202520260.00.30.71.01.320252026
MonthBalanceStatusRateDSCR (NCF)DSCR (NOI)OccupancyAdvancesFinancial period endRevenueExpensesNOINCF
December 2023$38.0MMatured balloon, performing7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
January 2024$38.0MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
February 2024$38.0MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
March 2024$37.9MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
April 2024$37.9MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
May 2024$37.9MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
June 2024$37.9MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
July 2024$37.8MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
August 2024$37.8MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
September 2024$37.8MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
October 2024$37.8MCurrent7.62%1.201.31not yet reported$006-30-2024$11.6M$5.5M$6.1M$5.6M
November 2024$37.7MCurrent7.62%1.201.31not yet reported$006-30-2024$11.6M$5.5M$6.1M$5.6M
December 2024$37.7MCurrent7.62%1.201.31not yet reported$006-30-2024$11.6M$5.5M$6.1M$5.6M
January 2025$37.7MCurrent7.62%1.201.31not yet reported$006-30-2024$11.6M$5.5M$6.1M$5.6M
February 2025$37.7MCurrent7.62%1.201.31not yet reported$006-30-2024$11.6M$5.5M$6.1M$5.6M
March 2025$37.6MCurrent7.62%1.201.31not yet reported$006-30-2024$11.6M$5.5M$6.1M$5.6M
April 2025$37.6MCurrent7.62%1.201.31not yet reported$006-30-2024$11.6M$5.5M$6.1M$5.6M
May 2025$37.6MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
June 2025$37.5MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
July 2025$37.5MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
August 2025$37.5MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
September 2025$37.5MCurrent7.62%0.750.8584%$003-31-2025$2.4M$1.4M$997,457$871,538
October 2025$37.4MCurrent7.62%0.750.8584%$003-31-2025$2.4M$1.4M$997,457$871,538
November 2025$37.4MCurrent7.62%0.750.8584%$003-31-2025$2.4M$1.4M$997,457$871,538
December 2025$37.4MCurrent7.62%0.750.8584%$003-31-2025$2.4M$1.4M$997,457$871,538
January 2026$37.4MCurrent7.62%0.750.8584%$003-31-2025$2.4M$1.4M$997,457$871,538
February 2026$37.3MCurrent7.62%1.211.3290%$009-30-2025$11.1M$4.9M$6.2M$5.7M
March 2026$37.3MCurrent7.62%1.211.3290%$009-30-2025$11.1M$4.9M$6.2M$5.7M
April 2026$37.3MCurrent7.62%1.211.3290%$009-30-2025$11.1M$4.9M$6.2M$5.7M
May 2026$37.2MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
June 2026$37.2MCurrent7.62%not yet reportednot yet reportednot yet reported$0not yet reportednot yet reportednot yet reportednot yet reportednot yet reported
July 2026$37.2MCurrent7.62%1.231.3490%$003-31-2026$2.9M$1.3M$1.6M$1.4M
August 2026$37.2MCurrent7.62%1.231.3490%$003-31-2026$2.9M$1.3M$1.6M$1.4M
September 2026$37.1MCurrent7.62%1.231.3490%$003-31-2026$2.9M$1.3M$1.6M$1.4M

Revenue, expenses, net operating income (NOI) and net cash flow (NCF) are the most recent financials reported as of each month, for the financial period ending on the date shown. DSCR is debt service coverage on the net cash flow and net operating income bases as reported.

Also filed in other trusts

Loans are sometimes split across trusts (pari passu), and each trust files the loan at its whole-loan amount. A loan with the same property name and origination date is filed in: BMO 2023-C7 Mortgage Trust.

Sources: SEC Form ABS-EE asset-level reports for the deal. Definitions are in the methods note on the market page.