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Comp sourcing slows live deals.
Broker calls take days the process doesn’t have.
For Private Equity · CompStak One Connect
Underwrite the market, not the offering memo.
Offering memos are written to sell. CompStak shows what comparable leases actually netted and the cap rates behind recent sales, giving your model numbers that hold up at investment committee.
Acquisition check · 400 Mandel Street
Seller’s offering memo vs. verified CompStak comps · Class A office, Gotham CBD
14 LEASE COMPS6 SALE COMPS4 GAPS FLAGGED
ASSUMPTIONOM VS. COMPSSELLER’S OMCOMPSTAKGAP
Starting rent$68.00/SF$61.40/SF−$6.60/SF
Free rent6 mo11 mo+5 mo
Landlord work$90/SF$124/SF+$34/SF
Lease term10.0 yrs10.4 yrsIn line
Exit cap rate5.25%5.60%+35 bps
Seller’s OMCompStak verified comps
NER · SELLER’S OM$55.60/SF
NER · COMPSTAK COMPS$43.37/SF
GAP−22.0%
BASIS10-yr term, 14 leases
Trusted by the leaders in commercial real estate
What private equity teams miss without verified comps.
The seller’s comps skew the model.
Every assumption inherits the seller’s framing.
Everyone has the same market reports.
A published average is not an edge.
CompStak One Connect answers each of these with verified, analyst-reviewed comps.
Get StartedData for the whole deal cycle.
Build investment strategies with accurate income information.
Underwrite on lease, sale, loan, and property data including NER, concessions, sale price, cap rate, NOI, and LTV. Portfolios keeps every position measured against the market through the hold.
Get StartedUnderwriting · 400 Mandel Street
Office, Class A · 1,240,000 SF · Gotham CBD · sold Apr 2025
Sale price$842,000,000
Price PSF$679.03
Cap rate5.10%
NOI$42,942,000
PartyRoleDateLTV
Stak Capital PartnersTrue BuyerApr 202560%
Comp Property TrustTrue SellerApr 2025—
Test the rent assumption before it goes in the model.
Describe a space in Rent Predictor, including one with no lease on file, and get the Estimated Starting Rent Today with the comps behind it.
Get StartedRent Predictor · model input
400 Mandel Street · Floor 28 · 42,000 SF · no lease on file
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
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 models and internal records. Statistics and trends are free; pulling the underlying records counts toward your weekly comp limit.
Get Started“What have Class A office buildings in Gotham CBD traded at over the last four quarters, and where do cap rates sit?”
9 sales closed since Q3 2025 at a median $679.03 per square foot. Median cap rate 5.10%, up 35 basis points year over year.
SalesMedian PSFMedian capYoY change
9$679.035.10%+35 bps
Rent Predictor and Agent Connect are available on CompStak One Connect.
Ask for the acquisition screen 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.
“Build me an investment memo for 555 California Street: rent roll context, comp set, submarket trends, and recent sale comps.”
RETURNSMemo draft + comps
“Underwrite market rent for 55 Hudson Yards: median starting rent, free rent, and landlord work on comparable leases signed in the last 18 months.”
RETURNSUnderwriting summary
“Stress test my rent assumption of $85.23/SF for 600 Montgomery Street against leases signed in its comp set this year.”
RETURNSRent check + records
“Pull sale comps for Class A office in Dallas since 2024 and summarize cap rates, price per SF, and who is buying.”
RETURNSSale summary + records
Every field an investment team needs to model a deal.
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
CRE data straight from the source.
Each comp goes through a multi-step data verification process.
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.
See CompStak One Connect in action.
Underwrite on verified comps, in the tools your team already uses.
Get StartedHow other CRE teams use CompStak.
Questions about CRE data for private equity.
What data do investment teams use to underwrite?
Net effective rent and concessions on the lease side; sale price, price per square foot, cap rate, NOI, and occupancy on the sale side; and loan amount, LTV, and maturity on the debt side.
How quickly can I source comps for a live deal?
Search the market directly rather than waiting on broker calls. Agent Connect returns statistics, trends, and the underlying records from a question asked in your own words.
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 private equity teams?
Rent Predictor, which tests a rent assumption before it reaches the model, and Agent Connect, which runs underwriting questions 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.