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.
You can store multiple payment methods in your account, allowing you to pay your rent from multiple sources – for example, part from checking, part from savings, and part on a debit/credit card. More information about rent payment upgrades is coming shortly. If you have any questions in the meantime, please contact your property management office.