If a house in the City of Los Angeles has unpermitted work, the fastest way to find out before a buyer’s inspector does is LADBS’s online records system, now called PRISM. It’s free, public, and searchable by address — and for an as-is seller, what it shows, or doesn’t show, can decide whether escrow closes on schedule or stalls over a correction notice nobody expected.

Table of Contents

What PRISM Actually Is

PRISM — the Permit and Records Information Search Module — is the Los Angeles Department of Building and Safety’s current online portal for searching building records by address, parcel number, or permit number.

It replaced the department’s older public records system, still reachable at ladbsdoc.lacity.org and known informally among title researchers as IDIS, as LADBS’s primary public-facing records tool.

Both draw from the same underlying archive, so a search that comes up thin in one is worth trying in the other before you conclude a record simply doesn’t exist.

According to LADBS’s own published list of available records, the department holds building permits dating from 1905 to the present, certificates of occupancy from 1940 to the present, electrical, plumbing and mechanical permits from 1985 to 1990 and from 1996 to the present, plus plot plans, geology and soils reports, affidavits, zoning interpretations, approved building plans, and board files.

For a house built before 1985, the gap in electrical and plumbing records is normal and isn’t itself a red flag — but it does mean permit history alone can’t prove every system is up to code, only that certain categories of permit were tracked inconsistently decades ago.

How to Actually Run the Search

PRISM accepts a street address or an Assessor’s Parcel Number, and it’s worth searching both ways if the first attempt comes back empty — older records were sometimes indexed under a prior house number, especially in neighborhoods that were renumbered decades ago, or under the parcel’s legal description rather than its current street address.

For a condo or a unit in a small multi-family building, search the parcel number rather than the unit address; permits for shared structural elements are often filed against the whole parcel, not the individual unit.

A full search returns several categories of document, not just permits. “Range files” are code enforcement and violation records tied to the address — these are the ones sellers most need to see before listing, because an open violation is harder to explain away than an old expired permit.

Affidavits and ZIs (zoning interpretations) can confirm whether an unusual feature of the lot, like a legal nonconforming setback or a prior variance, was ever formally approved.

If the online system can’t locate a document type you need, LADBS’s Records Section will produce it on request, but only for records that aren’t already available as a PDF online — so it’s worth exhausting the free self-service search first.

What a Permit Status Actually Tells You

Each permit record in PRISM lists a permit number, the type of work (new construction, addition, alteration, repair, grading, demolition, or a trade permit for electrical, plumbing, or mechanical work), the date issued, the assigned inspector, and a status. Reading that status correctly matters more than most sellers assume:

Finaled means the work passed its final inspection and the permit is closed. This is the result you want to see on every major permit, and it’s the one a buyer’s lender will specifically look for on anything that changed the house’s square footage, bedroom count, or structural systems.
Issued or In Progress without a final inspection means the permit was pulled but the job was never signed off — sometimes because the work was actually finished and nobody ever called for the final inspection, sometimes because the project genuinely stalled partway through.
Expired means the permit lapsed before the work was finaled, typically after extended inactivity. An expired permit on a room addition or an electrical panel upgrade is one of the more common findings that slows down an as-is sale, because the buyer’s lender may require it to be resolved — either re-permitted and finaled, or inspected under a new permit — before funding.
Void or Cancelled means the permit was withdrawn before work began, which is different from work that was actually completed without ever pulling a permit in the first place.
Corrections Issued, visible on the inspection history attached to a permit, means an inspector flagged something during a site visit that has to be fixed before the permit can move toward final. An old correction with no follow-up inspection on record usually means the issue was never actually resolved.

The hardest case to catch is also the most common one in practice: an addition, a converted garage, or a finished basement that shows up nowhere in the permit history at all. PRISM can only show what LADBS has a record of.

A mismatch between the square footage on the assessor’s record, what’s on the permit history, and what you can see standing in the house is the real tell — not a flagged status on a permit, but an absence of one where there should be a permit at all.

Certificates of Occupancy and Why They Matter More Than People Realize

A certificate of occupancy confirms that a building, or an addition to one, was inspected and approved for the use it’s being put to — a detached garage converted to living space, for instance, needs its own certificate reflecting the new use, separate from whatever certificate covers the original house.

LADBS’s online records go back to 1940 for certificates of occupancy, which is older than the full run of electrical and plumbing permits.

For additions and conversions done after 1940, the absence of a matching certificate of occupancy is often a clearer signal than the permit record alone, since a job can sometimes show a permit was pulled without ever reaching the final step of a certificate being issued for the new use.

ADUs Are Their Own Category — and LA Has a Path to Fix Unpermitted Ones

Accessory dwelling units are the single most common source of unpermitted square footage LADBS encounters in older housing stock, because converted garages and granny flats were often built without permits going back decades before ADUs were legal to build at all.

If a PRISM search shows a garage conversion or a second unit on the lot with no matching permit, it’s worth knowing that the City of Los Angeles runs an amnesty program that lets owners legalize an existing unpermitted ADU rather than demolish it, which we’ve covered separately — it can be the difference between a sale that falls apart over the second unit and one where the buyer simply inherits a legalization process already underway.

How a Permit Search Differs From the Residential Property Report

Los Angeles separately requires sellers to provide a Residential Property Report, sometimes still called a 9A report after the municipal code section that originally created the requirement, before a buyer can go into escrow — we’ve covered what that disclosure does and doesn’t waive in a separate article.

The RPR is a compiled report the city produces for a fee through its own online services portal, pulling together permit history, code enforcement records, and an estimate of value and foreclosure activity into a single document.

A PRISM search is different: it’s a free, self-service look at the underlying permit history, and it’s what you’d use before you even order the RPR, to get ahead of anything the official report is going to surface anyway.

Running your own search first means you’re not finding out about a correction notice or an open permit for the first time when the buyer’s title company does.

If something needs resolving, you have time to deal with it or price around it before it becomes a renegotiation three weeks into escrow instead of a known quantity from day one.

Other City Tools Worth Checking Alongside PRISM

PRISM isn’t the only public tool, and each one answers a slightly different question:

ZIMAS (the Zone Information and Map Access System) shows zoning, general plan designation, specific plan overlays, and hazard zone data for a parcel — useful for confirming whether an addition or ADU conversion was even permissible under the zoning in place at the time, and for flagging whether the lot sits in a methane zone, fault zone, or other hazard overlay a buyer’s lender will ask about.
The Permit and Inspection Report, available through LADBS’s online services, pulls permits, related inspections, and code enforcement history together in one lookup tied to an address — a faster first pass than a full PRISM search if you just want to see whether anything is flagged at all.
Atlas and NavigateLA are city mapping tools that layer permit, zoning, and departmental data onto a parcel map, which can be faster than a plain address search when you’re trying to see everything the city knows about a property at once, including sewer and utility layers.

None of these replace a licensed inspection, and none will catch work that was done without ever involving the city in any way. What they will do, in about ten minutes and at no cost, is tell you roughly what story the city’s own paper trail tells about the house — which is exactly the story a buyer’s lender, appraiser, or attorney is going to go looking for anyway.

What California Disclosure Law Actually Requires Once You Know

Finding unpermitted work doesn’t mean the house can’t be sold — it means it has to be disclosed.

California’s Transfer Disclosure Statement, required under Civil Code Section 1102 and the sections following it, requires sellers to note known defects and material facts about the property’s condition, and that obligation doesn’t disappear because a sale is marketed “as-is.” We’ve broken down separately what disclosure actually requires when work was done without permits and what it doesn’t — namely, “as-is” changes who is expected to pay for a problem, not whether you have to tell the buyer the problem exists in the first place.

Depending on what the unpermitted work actually is, the options generally run in one of three directions: get it permitted retroactively through LADBS, which can mean a site inspection, a list of corrections, and permit fees; disclose it fully and let a buyer and their lender decide whether to proceed and at what price; or sell to a buyer who isn’t relying on conventional financing and has already priced the uncertainty into the offer.

The right path depends on the scope of the work, how much it affects the appraised value, and how much time you actually have before you need to close.

Why Conventional and FHA Buyers Are Especially Sensitive to This

A buyer paying cash can decide for themselves how much an unpermitted addition is worth to them.

A buyer using a conventional or FHA loan usually can’t make that call alone — the appraiser is required to note code violations and unpermitted additions that affect safety, and FHA’s minimum property standards in particular can require repairs or re-permitting before the loan is allowed to close at all.

That’s the practical reason permit history surfaces more often as a late-stage crisis than an early-stage disclosure: the seller didn’t know, the buyer’s agent didn’t ask, and the appraiser is the first person to actually pull the record — usually with an appraisal deadline already on the calendar.

When a PRISM Search Turns Up a Real Problem

An expired permit on a water heater replacement is rarely a dealbreaker — most buyers’ agents have seen a dozen of those and know it’s a non-issue.

An unpermitted bedroom addition that’s being counted in the advertised square footage is a different story, because it can affect the appraisal, the buyer’s loan-to-value ratio, and in some cases whether a lender will touch the file at all.

If a search in PRISM turns up something in that second category, it’s worth getting a rough read from a contractor or a permit expediter on what retroactive permitting would actually cost and how long it would realistically take before you decide how to handle it in the listing — silence is the one option that tends to backfire.

It’s also worth building in a little slack for how LADBS actually processes things.

The automated inspection request line and online status tools are generally current within a business day, but a correction that was cleared in person at a counter, or a document that only exists on paper in a satellite office, can take longer to show up online than you’d expect.

If a listing deadline is tight, calling ahead to confirm a status rather than relying on the online record alone can save a surprise later in escrow.

When a Cash Sale Is the Wrong Move

If the permit history comes back clean, the house sits in a desirable part of the city, and you have months rather than weeks to work with, listing conventionally will usually net more than a direct cash sale — a full buyer pool, including financed buyers, will pay closer to retail for a house with no permit surprises waiting in it.

Clearing an expired permit yourself before listing, where the fix is simple, is often worth the few hundred dollars and the wait for a re-inspection.

A direct sale tends to make more sense when the PRISM search, or a follow-up inspection, turns up unpermitted square footage or open code enforcement cases that would scare off financed buyers and their lenders outright; when you don’t have the cash or the months it can take to bring the work up to code before a traditional closing; or when the uncertainty itself, not just the eventual repair bill, is what you’re trying to get out from under.

First Steps

Search the address in LADBS’s current records system (PRISM) by both street address and Assessor’s Parcel Number, and cross-check anything that looks incomplete in the older ladbsdoc.lacity.org archive
Compare the permitted square footage and certificate of occupancy to what actually exists on the lot today
Note any permit marked expired, still open, or carrying unresolved corrections, and decide whether to resolve it before listing
Check ZIMAS for any hazard zone or zoning overlay that a lender or appraiser is likely to flag independently
Order the Residential Property Report once you already know roughly what it’s going to say

Permit research takes patience, and the status codes aren’t always intuitive on a first read. If you’d rather skip straight to a no-obligation cash offer and let an experienced buyer sort out the permit history, Cash Home Buyers CA buys Los Angeles houses as-is, permit issues and all, and our Los Angeles as-is page has more on how that process works.

You can also find Cash Home Buyers CA on our Google Business Profile.

How to Research Permit History on a Los Angeles Home With LADBS’s PRISM System