In 2017, 37,000 homes were built as rentals, according to the National Association of Home Builders. That grew to 43,000 last year, or just under 5% of total single-family housing starts. But that is just homes built and held by builders for rent and doesn't include those sold directly to investors, so the numbers are likely larger and growing more quickly.
"It's viewed as an ancillary income stream. We see this as more and more renters may prefer to raise a family or live in a single-family home versus an apartment complex or community or building. And so it is part of our Apartment Living group," Toll Brothers CEO Douglas Yearley said on the company's second quarter earnings conference call last month.