Two constants have guided my professional life: venture capital and real estate. Every year, I eagerly await to see which portfolio will produce greater returns. Today, in the words of the great (fictional) New Yorker George Louis Costanza, “Worlds are colliding!” Enertiv, a New York Angels investment, keeps growing with an impressive client list of property managers and building owners. The smart building hardware startup is the latest in a slew of new property technology (PropTech) innovations disrupting the $16 trillion realty market.