HomeServices of America Inc., the real estate brokerage owned by Warren Buffett’s Berkshire Hathaway Inc., added nine broker affiliates in seven states as it seeks to benefit from the U.S. housing rebound.

Buffett’s business signed affiliate agreements with two brokerages each in Texas and California, according to a statement. It also added brokerages in Delaware, New York, Georgia, Florida and Tennessee.

HomeServices, the second-largest residential broker in the U.S., has extended its reach with acquisitions in states including Pennsylvania, Missouri, Oregon and Washington. Buffett, Berkshire’s 83-year-old chairman, has positioned the Omaha, Nebraska-based firm to expand with the housing market by investing in a brickmaker and building the largest stake in Wells Fargo & Co., the top U.S. mortgage originator.

Realogy Holdings Corp.’s NRT LLC is the largest U.S. residential brokerage operator, with more than 700 company-owned offices under brands including Coldwell Banker and ERA.