Tech start-ups look to disrupt the affordable housing industry

The United States is in the grips of an affordable housing crisis with many people of low and moderate incomes struggling to find inexpensive places to live. Until recently, technology companies ignored the housing market. Then businesses such as Compass, Redfin and Zillow disrupted how homes were bought and sold. Now, more start-ups are addressing ways to make renting and homeownership available to more people. A few entrepreneurs are working to solve the more prosaic problem of housing affordability.