The monthly payment on a $600,000 loan at current rates is $3,718, up from $2,565 at the end of last year.
The property industry is grappling with a pullback from investors, financing challenges and even more layoffs.
Zillow is the latest real estate company to shrink its workforce in recent months.
Home Partners isn't first large investor to back away from the overheated housing market.
Inflation decelerated more than expected in July, which has eased some pressure on mortgage rates.
Sun Belt cities including the Texas capital have dominated various lists of the top housing markets in recent years.
Investors who helped propel U.S. home prices to record levels are pulling back.
Landlords and home flippers proved less sensitive to rising costs than ordinary buyers.
Two out of 10 homes flipped by the iBuyers last year wound up with investors and other entities.
Zillow has approximately 18,000 homes to sell in total.