Today, commercial real estate tech start-up  CompStak  launched CompStak Exchange, a new platform of the lease comp database platform free for commercial real estate brokers, researchers, and appraisers. CompStak Exchange features enhanced functionality to facilitate the exchange and analysis of lease comps, with an ability for multi-market companies to adopt the system for lease comp management across markets. “The premise of  CompStak  is the exchange of information,” said CEO and co-founder Michael Mandel. “As a real estate broker, I sat through inefficient weekly meetings discussing deals that had no impact to my work at the time – that was the epiphany moment for CompStak. CRE Professionals want to exchange information they have for information that they need at the time.” This new offering from CompStak is the culmination of months of input from its active members in the real estate community. Through extensive user research, CompStak continues to work to meet the unfulfilled data needs of brokers, researchers, and appraisers through its crowd-sourcing exchange system. CompStak covers 12 US markets, including New York, San Francisco, Chicago, Washington DC, Atlanta, Los Angeles and Dallas. Lease comps are provided by thousands of commercial real estate professionals who are members of the service. The coverage improves daily as professionals from nearly all brokerage and appraisal firms in each market consistently update CompStak with new deals. CompStak  is a free service offered only to professionals in the commercial real estate community, including brokers, appraisers, and researchers. Real estate investors may subscribe to CompStak by emailing enterprise@compstak.com or calling (646) 926-6707.  CompStak Exchange Transforms the Commercial Real Estate Industry CompStak