Selling an Uninhabitable House

You can sell a house that is not fit to live in, but most of the usual buyers cannot buy it as it stands, because a standard mortgage generally needs a house that is safe and sound. That leaves buyers paying cash, buyers using a renovation loan, and, for a house past saving, buyers who are really paying for the lot. California has no single legal test called "uninhabitable"; the closest is the list of substandard conditions in Health and Safety Code section 17920.3. Disclosure duties stay with you either way, and whether to fix the house up to a livable floor first depends on what those repairs cost against what they add.

This article is part of the fire, water and repair-heavy houses section. When the damage came from a fire or a flood and an insurance claim is in play, start with rebuild first or sell now.

What "uninhabitable" means, depending on who is asking

Three sets of rules use different words for roughly the same idea. Knowing which one applies to your house tells you who can buy it.

The code. Health and Safety Code section 17920.3 says a building is substandard when a listed condition exists to an extent that endangers the life, limb, health, property, safety or welfare of the occupants, nearby residents or the public. The list is long. Under inadequate sanitation it includes "lack of adequate heating," "dampness of habitable rooms," "visible mold growth" and "lack of hot and cold running water to plumbing fixtures in a dwelling unit." Under structural hazards it includes "deteriorated or inadequate foundations." It also covers unsafe wiring and plumbing, "broken, rotted, split, or buckled exterior wall coverings or roof coverings," fire hazards, and accumulations of junk, debris or stagnant water.

The lender. Fannie Mae's Selling Guide rates a house C6 when it has "substantial damage or deferred maintenance with deficiencies or defects that are severe enough" to affect the safety, soundness or structural integrity of the improvements. A loan on a C6 house is not eligible for sale to Fannie Mae until those items are repaired to at least C5, the rating for a house that has "obvious deferred maintenance" but still works as a residence.

The insurer. A homeowners policy's loss-of-use coverage, the California Department of Insurance explains, pays extra living costs when a covered loss leaves you unable to live in your home, and its claims guide tells owners whose property "is not safe for occupancy" to keep every receipt. That is a coverage question, not a sale rule, but it is often the first time an owner hears the house called unlivable.

When the city is already involved

If code enforcement has cited the house, Health and Safety Code section 17980 sets the path. The agency gives notice to abate, usually 30 days, or less for an immediate threat. For a substandard building it must start proceedings to repair, rehabilitate, vacate or demolish, and the owner chooses between repair and demolition; if the owner repairs, the agency requires a "reasonable and feasible schedule for expeditious repair." The agency cannot require a residential building to be vacated unless it also requires repair or demolition, and it must prefer repair when repair is economically feasible. The notice also has to warn that certain state tax deductions may be denied under Revenue and Taxation Code section 17274, a question for a tax professional.

A buyer takes the house with that case attached, so the citation, the deadlines and any abatement costs belong in the file before you price it. How cited houses are disclosed is in selling a cited house: disclosure duties, and how abatement costs reach the title is in code liens and title. Whether to repair or demolish under a notice is a decision to make with the agency and, if needed, an attorney.

Who can buy a house nobody can live in

BuyerHow they payWhat they need from the houseWhat it means for you

Owner-occupant with a standard loan

Conventional or government-backed mortgage

Safety, soundness and structural items repaired before closing

Possible only after the safety items are repaired, which usually means you pay for the work first

Owner-occupant with a renovation loan

One loan for the purchase and the work

Plans, bids, a licensed contractor and an "as completed" appraisal

A longer escrow, with access for the contractor and the appraiser

Cash buyer or investor

Own funds

Access for a walkthrough

A price that carries the repairs, the risk and the buyer's margin

Builder or lot buyer

Usually cash

A lot worth building on

Priced from land and new-construction sales, not from the house

The renovation-loan path is covered in selling a house that needs a full remodel. When the house adds little or nothing, how vacant land is priced is the more useful read.

Why financed sales fail on these houses

The appraisal is usually where it ends. The appraiser for the buyer's lender rates the condition, and a house with a failed roof, no working water, an unsafe panel or a moving foundation is the kind of house the C6 rating describes. Then the loan cannot close as written until the work is done. If the work is done before closing, someone has to pay for it and wait for it, which in practice means you.

Insurance can be the second wall. A buyer's lender needs the house insured at closing, and a house that is condemned or declared uninhabitable is harder to insure; the background is in insuring a vacant house. Both are reasons to know early which buyers can actually close, before the house spends months listed to buyers who cannot. The pattern is described in as-is and appraisals: when lenders balk.

Fixing it up to livable, then listing

There is a middle path between selling as it sits and a full rebuild: repairing only what keeps the house from being lived in and financed, then listing it as a dated but sound house. The items that usually decide it are the ones the code list names: a roof that keeps water out, working water and heat, safe wiring, a sound foundation, and no active moisture or mold.

That path usually nets more when:

• the problems are few and visible, such as one failed roof or a dead water heater, rather than structure and every system at once;
• licensed contractors can do the work under permit in a short job;
• repaired houses on the same streets sell to ordinary financed buyers;
• you can carry the house through the work and the listing.

Selling as it sits usually makes more sense when the list reaches into structure and every system, a code case sets deadlines you cannot meet, the house is vacant and getting worse, or you are an heir or owner out of the area who cannot oversee the work. To check whether a buyer's repair lines are reasonable, put your bids next to them, as shown in repair estimates vs. an offer's deductions.

Disclosure does not go away

California's transfer disclosure statement applies to most sales of a house, and Civil Code section 1102.1 says its delivery "may not be waived in an 'as is' sale." Whatever made the house unlivable, and any notice you received about it, belongs on it. What exactly to disclose is a question for a real estate attorney; the form is explained in the transfer disclosure statement for as-is sellers.

San Dimas: when the lot matters more than the house

In San Dimas, an unlivable house is often worth less than the ground it sits on, and the ground varies a lot. The city's private horse overlay zone allows horse keeping on qualifying residential lots, so a house that cannot be lived in on a horse-zoned lot is priced from other horse properties, with the barns and arena counted, not from the tract house a few blocks away. Barns, casitas and enclosed patios on those larger lots often have mixed permit histories, which a buyer will price too.

Up against the San Gabriels, northern San Dimas is in mapped fire hazard severity zones, which shapes insurance and brush clearance for any buyer of a damaged foothill house. On the older streets around downtown Bonita Avenue, the age of the roof, the wiring and the plumbing is the first thing to check, because those are the items on the code list.

What this looks like in practice

These are the kinds of files that come in, described without names or figures.

• A house empty for years after a parent moved into care, with the water shut off, a failed roof and mold in two rooms.
• A San Dimas house on a horse-zoned lot where the house is past saving and the family wants to know what the lot and outbuildings bring.
• A cited house with a notice to abate and a repair deadline the owner cannot meet from out of state.

Getting both numbers

Tell us first what is unsafe; the walkthrough is planned around it, and any area that cannot be entered is noted on the sheet. You get an as-is cash offer from independent buyers and investors, with each repair category on its own line, and an open-market read on the house repaired to livable, which is a preliminary estimate, not an appraisal. When repairing and listing nets more, the written recommendation says so, and you are introduced to a designated local expert, an independently licensed California agent who works your neighborhood. Start on the fire, water and repair-heavy houses page or call (909) 498-3977. There is no cost and no obligation to get the two numbers and the written report.

Sources

• California Health and Safety Code section 17920.3 (substandard building conditions), copy read on california.public.law, accessed November 6, 2026
• California Health and Safety Code section 17980 (notice to abate; repair, vacation or demolition), copy read on california.public.law, accessed November 6, 2026
• California Civil Code section 1102.1 (disclosure statement not waivable in an as-is sale), copy read on california.public.law, accessed November 6, 2026
• Fannie Mae Selling Guide B4-1.3-06, Property Condition and Quality of Construction of the Improvements, accessed November 6, 2026
• California Department of Insurance: Residential Insurance, Homeowners and Renters, accessed November 6, 2026
• California Department of Insurance: Residential Property Claims Guide, accessed November 6, 2026
• City of San Dimas Municipal Code Chapter 18.112: P-H Private Horse Overlay Zone, accessed September 26, 2026
• Office of the State Fire Marshal: Fire Hazard Severity Zones, accessed September 26, 2026

Mr. Cali Offers is not a lender, insurer or law firm. Cash offers come from independent buyers and investors who buy for their own account and may resell for profit; a cash offer is generally below what the open market would bring. Any value shown is a preliminary estimate, not an appraisal. Nothing here is legal, tax or financial advice.