24 Hour Fitness founder and CEO Mark Mastrov is trimming the selling price of his Lafayette mansion by $3.55 million to $9.95 million. The home was originally listed for $13.5 million.

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The 8,000-square-foot estate in Happy Valley offers extravagant indoor-outdoor living. An expansive great room with an aquarium and vanishing walls opens into a sprawling pool area. Outside are two spas, waterfalls and a rooftop firepit. Fitness buffs also won’t be disappointed with a gym, massage room as well as a tennis court, batting cage, putting green and basketball area.

Anton Danilovich and Herman Chan with Golden Gate Sotheby’s International are the listing agents.

Mastrov was born in Oakland and attended Castro Valley High School as well as Cal State Hayward. He founded 24 Hour Fitness in 1983 and in 2013 became part owner of the Sacramento Kings.


By Richard Moran

Richard Moran loves to write about sports with the Golden State Online. Before that, he worked as a senior writer at ESPN. Richard grew up in San Diego and graduated from the University of San Diego in 2004, after which he worked as an editor for five years.

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