Another California ADU builder has stopped building. And the state has suspended its license. Nonna Homes has been on our radar for a year. It’s based in Sacramento, but has been signing up customers in the Bay Area.

Back in April of 2025, we told you about homeowners like Eileen Horton in Martinez who told us Nonna Homes took big money up front, then did little or no work. At the same time, subcontractors like Andrei Melchner in the East Bay said that they bought materials and did work for Nonna, but didn’t get paid. 

They and others filed official complaints. At the time, Nonna’s attorney said the builder was trying to do the right thing with consumer complaints. The past few months, license records show the state contractor board has forwarded several complaints to the California Attorney General for investigation. Separately, state license records show key employees just “disassociated” from Nonna Homes. “Disassociated” is the term the state uses when partners and corporate officers leave. 

An auto-reply from the email account for the company’s CEO, Ray Guanill, said, “due to internal administrative matters Nonna Homes… is not conducting business at this time.”  

Here’s another development: the Contractors State License Board says Nonna’s license is now suspended. A rep told us, “Nonna ADU and construction’s license is suspended after its contractor’s bond was canceled.” The CSLB requires contractors to carry a bond to bailout consumers should they shut down. 

NBC Bay Area reported a series of stories about another big ADU builder that went belly up: Anchored Tiny Homes. Many Bay Area customers who paid up front but did not get their ADU’s are continuing to duke it out with the company’s founders in bankruptcy court– more than a year after Anchored Tiny Homes went out of business.   

There might be a long road ahead for Nonna Homes’ customers. If you’re one and want to share your story, please fill out our consumer complaint form.