Wall Street is ramping up financing to private-equity firms buying homes to rent, helping them accelerate purchases as competition increases and prices jump, Bloomberg reports.

Deutsche Bank (DB) arranged a $1.5 billion credit line for Blackstone Group (BX) to buy single-family properties last week, after providing $2.1 billion to the firm earlier this year, according to three people with knowledge of the deal, who asked not to be identified because the loan is private.