Compstak
New York, US · Founded 2011 · 126 employees on LinkedIn · 11 known investors
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CompStak is a crowdsourced commercial real estate data platform that aggregates millions of data points weekly to provide comprehensive CRE datasets for lenders, investors, and landlords. The platform aims to increase transparency and efficiency in commercial real estate transactions.
Also known as CompStak
Founders & leadership
Compstak was founded in 2011 by Michael Mandel and Vadim Belobrovka.
Board
Investors · 11
Reported raises · per SEC filings
Form D private placements$3.9M disclosed across 1 round · 2014
▶$3.9MraisedNov 2014 · 13 investors · OtherRule 506(b)
- Hrach SimonianDirector
- Vadim BelobrovkaExecutive Officer, Director
- Michael MandelExecutive Officer, Director
- Offering amount
- $4.4M
- Amount sold
- $3.9M
- First sale
- Oct 2014
- Incorporated
- Corporation, Delaware, 2011
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026CompStak operates a commercial real estate (CRE) information platform that assembles transaction-level data on leases, sales, loans and properties. Its data set is sourced from a network of brokers, appraisers and researchers, and each comparable ("comp") is put through a verification process that the company describes as a proprietary methodology combining crowdsourcing with internal review. Data fields include, for lease comps, starting rent, free rent, tenant improvements, rent escalations, square footage, tenant industry, expiration and execution dates, address and floors occupied; for sale comps, sale date and price, occupancy, cap rate, NOI, buyer and seller, transaction square footage and price per square foot; for CMBS/loan records, lender, loan amount, maturity and origination dates, loan-to-value, appraised value, NOI, loan rate, occupancy and loan type; and for property records, property type, average lease size, floor count, year built and renovated, building class and size, landlord, parking ratio and lot size.
The product line comprises CompStak Exchange, CompStak One (a unified platform positioned as a single source for lease comps, sale comps, loan data, property data and analytics), CompStak AI (announced on the site as a newly available capability layered on the company's data), an API, a Strategic Advisory service, and a published Data Standard. Coverage is organized by asset type — industrial, multifamily, office and retail — and by US market. The company also publishes research articles and reports and maintains partnerships; its analyses are frequently cited by real estate trade press.
Business model
CompStak licenses access to its verified CRE transaction data through subscription platforms (CompStak One, CompStak Exchange), a data API, and advisory services. The Exchange model is built on contribution of transaction information by industry participants, whose data submissions feed the platform that professional users access.
Traction
The website reports 4 million comps received, 4 million properties and coverage of 105 US markets, with data sourced from more than 40,000 brokers, appraisers and researchers. Forbes has cited more than 35,000 members contributing authenticated data covering the US. CompStak data and analysis are regularly referenced in commercial real estate media, including a joint report with Savills on San Francisco office leasing by AI companies.
Latest developments
The company is promoting CompStak AI, described on its site as newly available, alongside CompStak One as a consolidated data platform. Recent research includes a joint CompStak and Savills report on AI-company office leasing in San Francisco, noting roughly 1 million square feet leased since 2020 and about 30 percent of existing leases expiring by the end of 2025, and an analysis of office leases signed from 2018 through the first quarter of 2024 in Manhattan, San Francisco, Los Angeles and Chicago that found a preference for higher floors.
▸Full profile — market position, technology, go-to-market, geography
Market position
CompStak positions itself as a source of transaction-level CRE data, contrasting its deal-specific detail with providers that anonymize or average data; Propmodo has described its information as accurate and specific to individual deals. Its research is used as a reference point by real estate trade publications.
Emphasis on granular, deal-specific data rather than anonymized or averaged figures; a unified asset view spanning lease, sale, loan and property history; and verification of each comp through a stated proprietary process supported by a large contributor network.
Technology
The platform combines crowdsourced data submissions from an industry contributor network with a proprietary data verification methodology applied to each comp, and unifies an asset's lease, sale, loan and property history in a single record. An API supports integration of granular transaction data into customer workflows, and CompStak AI adds artificial-intelligence capabilities on top of the underlying data set.
Go-to-market
Direct self-service sign-up and demo requests through the website, a contributor network of brokers, appraisers and researchers who supply data, published research reports (including work produced with Savills), and visibility through trade-press citations of CompStak data in outlets such as The Real Deal, Commercial Observer, Bisnow, GlobeSt., Propmodo and Forbes.
Commercial real estate professionals including lenders, investors, landlords, brokers, appraisers and researchers, spanning industrial, multifamily, office and retail asset classes.
Geography
United States; the site reports nationwide coverage across 105 US markets, with market-level selection available for all states.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Competitors · 4
by search overlap
Companies competing with Compstak for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 2
launches, deals, and filingsCompStak and Savills published a report on AI companies' San Francisco office leasing, citing about 1 million square feet leased since 2020 and roughly 30 percent of existing leases expiring by the end of 2025.
CompStak announced on its website that CompStak AI is available, pairing AI capabilities with the company's commercial real estate data.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 1
primary sources listed
- Compstakcompstak.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Compstak do?
- CompStak is a commercial real estate data platform that crowdsources and verifies lease, sale, loan and property comps across US markets.
- Who founded Compstak?
- Compstak was founded by Michael Mandel, Vadim Belobrovka in 2011.
- Who are Compstak's investors?
- Compstak's investors include 500 Global, Camber Creek, Canaan Partners, Escalate Capital Partners, Expansion Venture Capital, Founder Collective, Global Brain, IA Capital Group and 3 more.
- How much funding has Compstak raised?
- Compstak has disclosed $3.9M raised across 1 round.
- Where is Compstak headquartered?
- Compstak is headquartered in New York, US.