Was That Work Permitted? Checking a Claremont Home's Record

Half the older housing stock in any California town contains work that never appeared on a permit. Converted garages, enclosed patios, added bathrooms, rebuilt decks, and finished basements accumulate quietly across decades of ownership.

None of that is exotic and none of it is automatically a disaster. But a buyer, a seller, or an owner planning new work needs to know what the record says, because the record is what the city will act on.

Where the record lives

The permit history for a property sits with the building division, keyed to the address or the parcel number. Depending on the era, it may be digitized, on microfilm, or in a physical file, and older records are frequently incomplete for reasons that have nothing to do with the current owner.

Ask for the permit history and, separately, for any code enforcement history. They are different files and a property can be clean in one and not the other. The counter is where both requests start, and what to ask for at the planning counter covers how to phrase them.

County assessor records are a useful cross-check but they are not a permit record. The assessor tracks characteristics for valuation, and a discrepancy between assessor square footage and the permit file is a signal to look harder, not a conclusion by itself.

What the record does and does not prove

A permit that was issued and FINALED is the strong case. It shows the city reviewed the work and signed off at completion. A permit that was issued and never finaled is weaker: work was authorized, but nobody confirmed it was completed correctly, and an expired permit with open inspections is its own problem.

An absence of records is genuinely ambiguous. It may mean the work was unpermitted. It may mean the file was lost, the work predated a requirement, or the record was never digitized. Older properties routinely have gaps that reflect record keeping rather than misconduct.

Which is why the honest phrasing in a real estate context is that the record does not show a permit, rather than that the work was unpermitted. The first is verifiable; the second is a conclusion the file may not support.

How to actually check

• Pull the permit history by address. Note dates, scopes, and whether each permit was finaled.
• Walk the house against it. Count bedrooms and bathrooms, look at the garage, the rear yard structures, and any obvious additions, and compare to what the permits describe.
• Look for the seams. Changes in ceiling height, floor level, exterior material, or window style usually mark where an addition met the original structure.
• Ask the seller directly, in writing. Disclosure obligations attach to what a seller knows, and a written answer is part of the record of the transaction.
• Bring the question to a licensed inspector. Some unpermitted work is cosmetic; some involves structure, electrical, or plumbing that was never inspected and may be genuinely unsafe.

Why it matters beyond paperwork

Safety comes first. Uninspected electrical and gas work, unvented rooms, missing egress windows, and unengineered structural changes are the categories that cause harm, and they are invisible behind finished surfaces.

Then there is the practical friction. Unpermitted square footage can complicate appraisal and lending, because an appraiser may decline to give value to space the record does not recognize. Insurance can be affected. And a future permit application on the property forces the question, because reviewers look at the whole structure, not only the new work.

Finally there is enforcement exposure. A complaint can start a process regardless of who did the work, and the current owner is the one who has to answer it. Older structures also interact with the nonconforming framework described in legal grandfathering, which is a zoning question rather than a building one.

The options for existing unpermitted work

Broadly, there are three, and the right one depends entirely on the specifics.

LEGALIZE. Apply for a retroactive permit, open the walls where a reviewer needs to see, correct what does not comply, and obtain a final. This is the durable outcome and it is the only one that produces a clean record. It costs money and it can require real reconstruction, particularly where structural or fire separation work was never engineered.

REMOVE. Return the space to its permitted condition. Sometimes cheaper than legalizing, particularly where the work would fail current standards outright.

DISCLOSE AND LEAVE. Sell or hold with the condition known and disclosed. This does not resolve anything, and it shifts a known issue to a buyer who will price it, but it is a legitimate choice when the work is minor and safe.

What is not an option is concealment. Non-disclosure of known material conditions creates liability far larger than the permit would have cost.

The practical takeaway

Check the record before you need it. For a buyer that means during the inspection period; for an owner it means before designing new work; for a seller it means before the listing, when there is still time to decide what to do about what you find.

Verify permit and enforcement history with the building division for the specific address, and get legal and licensed professional advice on any decision about existing unpermitted work. General descriptions do not bind anyone; the city's file does.

Begin at our City Development hub for the wider permit system, and read how plan check works to see what a properly permitted job goes through.

Anthony Grynchal has been licensed in California since November 2009.