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Compstak
https://therealdeal.com/new-york/2013/01/21/commercial-leasing-data-crowdsourcer-compstak-to-launch-revamped-service/
CompStak | commercial leasing NYC
Jan 21, 2013 - Commercial leasing data crowdsourcer CompStak to launch revamped service
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https://compstak.com/
CompStak - Home Page
Oct 6, 2025 - Timely, analyst reviewed commercial lease comps, sale comps, and property details.