The proptech firm enables its 20,000 investors to pitch in on commercial property deals for as little as $50,000. : Real estate tech startup Cadre has made waves in recent years for a platform enabling individuals to invest in commercial property transactions for as little as $50,000. So far, Cadre’s model has caught on. In the five years since launching in 2014, the startup now has roughly 20,000 investors who have stakes in more than $3 billion worth of real estate assets.