Unpermitted additions and garage conversions: what San Jose code enforcement can do and what a buyer does about it
The letter usually shows up on a Tuesday. I have no idea why. It is from the City of San Jose, Planning, Building and Code Enforcement, and it says an inspector would like to take a look at your garage.
I've sat with a lot of owners holding that letter. Almost none of them built the thing. They bought the house with the garage already a bedroom, or a father-in-law did it in the nineties. The city doesn't care who built it. The violation runs with the property, and the owner of record is the one who answers for it.
How a case starts
A few ways. A neighbor complains. A different permit gets pulled, say for a water heater, and the inspector notices a window where the garage door ought to be. Or a buyer's agent pulls the permit history during escrow, finds nothing for 400 square feet of living space, and the deal blows up loudly enough that somebody calls it in.
The permit history is public. Anyone can ask the city what has been permitted at your address. If you're thinking about selling, ask before the buyer does.
The notice of violation
The first document you get is a notice, and it is more of a deadline than a punishment. It names the violation (habitable space without permits, no egress window, whatever the inspector saw), cites the code sections, and gives you a date to comply by. Ignore it and the fees start running. Then administrative citations. Eventually a lien.
What I tell people: call the inspector back the same week. The ones I dealt with wanted the file closed, not a fine. Show up. Be polite. Ask what it takes, and ask what it costs to just put the door back. Get a real estate attorney on the phone if the notice mentions a lien. That's past my pay grade, and nothing on this page is legal advice anyway.
Legalize or remove
That is the choice the city hands you, and both cost money.
Remove means you take the garage back to being a garage. Pull the drywall, take out the plumbing, put the door back, get a permit for the removal, pass one inspection. For a bare-bones conversion this is the cheap path. It is what I recommend to anyone who needs the case closed fast and doesn't care about the square footage.
Legalize means you apply for a permit for work that already exists. The city treats it as new work, with an investigation fee on top of the usual permit fee, and the inspector has to see what is behind the drywall. So the walls come open. They want framing that meets code, wiring in proper boxes, plumbing that's vented, insulation, a header over any opening, fire-rated separation to the house, an egress window in any bedroom, and a ceiling height that passes. If a slab was poured over the old garage floor with no moisture barrier, they may want it cored. If the addition sits on a foundation nobody engineered, they may want an engineer's letter, and an engineer's letter on a foundation that was never designed usually says "replace it."
Legalizing a good one ran people ten to twenty-five thousand in our bids, plus the investigation fee the city adds on. A bad one, with a bad slab and a bad foundation, I've seen pass sixty and I've seen people stop halfway. You won't know which one you have until the drywall is off. Whoever does the work, look them up on the CSLB license check first.
The ADU rules that sometimes save a conversion
State law has been kind to garage conversions for a few years now. Under the accessory dwelling unit rules that HCD publishes and explains, a city can't make you replace the parking you lose when a garage becomes an ADU. More useful for the people I talk to: the state has told cities not to deny a permit for an ADU built without one before 2020 unless it's a genuine health and safety hazard. That doesn't skip the inspection. It does mean the meeting starts at "what does this need" instead of "this shouldn't exist."
Read HCD's page before your first meeting at the city, and say the words "accessory dwelling unit" out loud in that meeting. A converted garage with its own entrance, a kitchen and a bathroom might be a legalizable ADU. A garage with a bed in it and no kitchen is an unpermitted bedroom, and the ADU path may not fit it.
Why lenders and appraisers choke
An appraiser counts living area from what's permitted and finished to the same standard as the rest of the house. An unpermitted 400 square feet gets a note and usually gets left out of the count. So the house appraises as a three-bedroom even if you've been calling it a four. Then the lender reads the appraisal, sees the word "unpermitted," and asks for the space to be legalized, removed, or at minimum disclosed with a note that it carries no value. Some lenders walk.
This is where financed sales of converted garages go to die. The buyer wanted a fourth bedroom. The bank says it's a garage.
If you can't afford to go through that twice, there are cash buyers who do not ask you to pull permits first. They take the open case with the house. No appraiser counting square feet.
The assessor
The Santa Clara County Assessor has its own view of your garage. New construction is supposed to be assessed as of the date it was finished. When the assessor finds out late, which a legalization permit tends to trigger, it can enroll the added value for earlier years too, so ask the assessor's office how far back that reaches. The added value is taxed going forward. It is not a reason to stay unpermitted, but it surprises people.
Disclosure of the open case
An open code case is a known material fact. It goes on the Transfer Disclosure Statement and into your answers on the buyer's questionnaire. You describe the violation, the date on the notice, where the case stands and what the city has asked for. A couple on a Blossom Valley street in 2019 tried to close before the letter "counted." The buyer's title company found the recorded notice anyway. Lying about a code case is a lawsuit.
How an as-is cash sale handles it
The buyer reads the notice and the permit file, prices the legalize-or-remove work into the offer, and takes the case along with the house. The city doesn't care who closes it, only that it gets closed.
If there's an open notice sitting on your counter for a garage you didn't convert and can't afford to defend, get a written as-is cash offer before you spend a dollar on drywall. Call the inspector back this week. Then call me, or someone like me, and get a removal bid before you get a legalization bid.