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Borrower comps are cherry-picked.
The comps that support the ask arrive; the ones that don’t never do.
For Lenders · CompStak One Connect
Size the loan on rents that closed.
Borrower rent rolls show the rents the sponsor needs. CompStak checks each line against verified comps from the brokers who signed the deals, before the file reaches credit committee.
Rent roll check · 400 Mandel Street
Borrower rent roll vs. verified CompStak comps · Office, Class A, Gotham CBD
5 TENANTS18 LEASE COMPS2 ABOVE MARKET
TENANTSFROLL VS. MARKETRENT ROLLMARKET NERGAP
Belobrovka Analytics42,000$84.00$75.50+11.3%
Comp Advisory Group18,400$74.00$73.10In line
Stak Capital Partners25,000$76.50$77.25In line
Mandel Holdings31,600$82.40$71.80+14.8%
Gotham Ridge Partners14,200$69.40$70.20In line
Borrower rent rollCompStak verified comps
ABOVE-MARKET RENT$692,000/yr
NOI AT MARKET$42,250,000
DSCR · UNDERWRITTEN1.45x
DSCR · AT MARKET1.43x
Trusted by the leaders in commercial real estate
What lenders miss without verified comps.
The market moves against your book quietly.
Stress shows up in a modification request, not in a report.
The maturity wall arrives without warning.
Refis and workouts get triaged in the quarter they are due.
CompStak One Connect answers each of these with verified, analyst-reviewed comps.
Get StartedFrom origination to asset management.
Rent Predictor and Agent Connect are available on CompStak One Connect.
Underwriting
Evaluate every lending decision with verified data.
Cross-check borrower-submitted rent rolls against verified market comps and underwrite with lease terms, expirations, and concession detail.
Get StartedComp set · lease terms
Gotham CBD office · Class A
NER$75.50
Term10 yr
ExpiresQ2 2026
Occupancy94%
TenantSFNERExpires
Belobrovka Analytics42,000$75.50Q2 2026
Comp Advisory Group18,400$73.10Q4 2026
Stak Capital Partners25,000$77.25Q1 2027
Rent Predictor · One Connect only
Test the rent behind the loan.
Rent Predictor compares in-place rent to the Estimated Starting Rent Today for the same space, including space with no lease on file, so you size the gap before it becomes a credit event.
Get StartedIn-place vs starting rent
Collateral asset · 400 Mandel Street
Est. starting rent today$82.00
Range$78.00–$86.00
Comps used14
Underwritten$80.00
CompSFStartingNER
Belobrovka Analytics42,000$82.00$75.50
Comp Advisory Group18,400$79.50$73.10
Stak Capital Partners25,000$84.00$77.25
Agent Connect · One Connect only
Run the analysis where your team already works.
Query CompStak comps from ChatGPT, Claude, Gemini, or Copilot through the Agent Connect MCP server, and join them against your own records. Statistics and trends are free; pulling the underlying records counts toward your weekly comp limit.
Get Started“Check this borrower rent roll against leases signed in the same submarket over the last 18 months.”
In-place rent is $6.40/SF below the Estimated Starting Rent Today on 3 of 5 tenants. Two expirations land inside 12 months.
TenantIn-placeMarketGap
Belobrovka Analytics$76.10$82.00−$5.90
Comp Advisory Group$71.40$79.50−$8.10
Ask for the underwriting answer in your own words.
Agent Connect puts CompStak inside Claude, ChatGPT, Gemini, and Copilot. Ask the way you’d ask an analyst, and the work comes back with its source comps attached.
“Check this borrower’s rent roll at Willis Tower against the leases CompStak has for the building and flag any rent that looks above market.”
Returns
Rent roll check
“Build the collateral summary for Harmon Cove Industrial Park in Secaucus: current leases, expirations inside the loan term, and the Meadowlands rent trend.”
Returns
Collateral summary
“For Comerica Bank Tower, compare in-place rent to the estimated starting rent today and size the gap.”
Returns
Estimated Starting Rent Today + spread
“Summarize industrial sale comps in the Inland Empire over the last 24 months, with cap rate and price per SF, for the credit memo.”
Returns
Sale summary
Every field a lender needs to underwrite.
Access verified lease, sale, loan, and property data across major CRE asset types in 105 markets, with the details to analyze markets, value assets, and underwrite opportunities.
Net Effective Rent
Free Rent
Escalations
Tenant Improvements
+ more
Cap Rate
NOI
Price PSF
Buyer & Seller
+ more
Building Class
Size & Floor
Year Built
Landlord
+ more
Lender
Maturity Date
Origination
Loan-to-Value
+ more
Across the asset types you work with:
Office
Retail
Industrial
Multifamily*
Flex
R&D
Land*Multifamily data powered by RealPage
Every comp goes through a rigorous verification process.
Every comp is processed by a multi-step data verification system, including machine learning algorithms, statistical anomaly detection, and a team of CRE data analysts.
400 Mandel Street, Gotham, NY
Belobrovka Analytics · Office
SizeRentTerm
400 Mandel Street, Gotham, NY
Belobrovka Analytics · Office
SizeRentTermNet effective
Verified memberReviewed on intake
One building resolvedEvery party matched
1400 Mandel Industrial PkwyHeld for review
Deal participantsProperty record
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Community Sourcing
40,000+ verified CRE professionals at brokerage and appraisal firms submit comps daily. Transaction data is received and reviewed multiple times.
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AI & Machine Learning
Machine learning and statistical anomaly detection flag figures outside the expected range for the market and building. CRE Ontology resolves the address to one building and matches every party on the deal to a verified entity. Flagged records are held for review.
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Analyst Verification
Our team of CRE research analysts review and verify data daily. They cross-check each transaction against deal participants and property records. Data is never estimated or blindly added to the system.
How other CRE teams use CompStak.
Questions about CRE data for lenders.
How do lenders verify a borrower’s rent roll?
Check each line against verified lease comps for the same building and submarket. CompStak records net effective rent, free rent, landlord work, term, and expiration, so a reported rent can be tested rather than accepted.
What loan data does CompStak carry?
Lender, loan amount, loan-to-value, interest rate, and origination and maturity dates on the property securing the loan, alongside the lease and sale record for the same asset.
How does CompStak verify its comps?
Every comp is processed by a multi-step data verification system, including machine learning algorithms, statistical anomaly detection, and a team of CRE data analysts. Read more about our data standard.
What does CompStak One Connect add for lenders?
Rent Predictor, which sizes the gap between in-place rent and what the space would lease for today, and Agent Connect, which checks rent rolls and drafts credit memo sections inside Claude, ChatGPT, Gemini, or Copilot.
How much CRE data does CompStak have?
CompStak has collected 4M+ versions of lease and sale comps across 105 US markets, contributed by more than 40,000 verified CRE professionals and reviewed by CompStak’s analyst team.