NYC’s Airbnb crackdown has sparked an underground market for home shares — and these startups are looking to cash in

A year-old clampdown on Airbnb in New York City has created an exploding underground market for apartment rentals — and a handful of scrappy startups are attracting big-name investors as they look to grab listings that comply with the city’s new rules. Last fall, the New York City Council imposed Local Law 18 — stiff...