CompStak

“CompStak crowdsources lease and sales comp data from professionals at commercial brokerage and appraisal firms, covering over 2.3M properties in 105 markets across all 50 states. Their data is particularly strong for office, retail, and industrial assets where verified comps matter most.”

“Columbia Business School and CompStak launched the Columbia CompStak Rent Index (CCRI), a first-of-its-kind rent analytic tool offering new insights into commercial rental markets in 50+ US cities. The academic partnership adds credibility and analytical rigor to CompStak's crowdsourced data approach.”

“CompStak's Q1 2026 product update introduces AI-powered search, Portfolios, and Folders for better workflow management. Over 35,000 brokers, appraisers, and CRE researchers submit comps daily through the Exchange platform, and a rigorous validation process uses AI plus human review to ensure data quality.”