Sam Altman's infinity pool flooded his $27 million Russian Hill mansion, lawsuit says

• Sam Altman's $27 million mansion is riddled with defects, a lawsuit claims.
• The lawsuit also claims developer Troon Pacific knew of significant issues before selling the home.
• Altman had to deal with sewage spills, water leaks, and mold, per the suit.

Sam Altman is not pleased with his $27 million mansion.

A recent lawsuit filed in San Francisco Superior Court on behalf of a home on 950 Lombard St. — which public records indicate is connected to the OpenAI CEO — accuses local developer Troon Pacific of overselling one of San Francisco's most expensive homes.

The complaint alleges that developers did not disclose that the house was riddled with construction flaws. It also claims that the CEO of Troon Pacific was "aware of pervasive and significant defects" with the home but sold it to Altman anyway.

The San Francisco Chronicle was the first to report on the lawsuit, and the SF Standard reported on Altman's connection to the home.

The OpenAI CEO suffered multiple incidents at the home, including raw sewage being dumped at the side of his home, "a crushed sewer pipe running from the laundry system that created a back-up and spillage," and multiple water leaks, the lawsuit says.

In August, a flood intruded the "entire subfloor of the lower level" of the home, causing widespread mold, the complaint stated. The lawsuit said it would cost $4 million to repair the home.

Per the complaint, the water source was the highly advertised infinity pool, which had a "poor and substandard waterproofing design and installation."

"In sum, owner was misled into buying a $27,000,000 'lemon'," the lawsuit states.

The flashy San Francisco mansion has been featured in multiple news and magazine articles. It includes a Batcave-like garage with an automobile turntable and views as far as Alcatraz Island.

The home also has a coyote problem.

"This coyote moved into my house and scratches on the door outside," Altman told Time in a December interview. "It's very cute, but it's very annoying at night."

Representatives for Altman, 950 Lombard LLC, and Troon Pacific did not immediately respond to a request for comment.