Are Building Permits Public Record in LA County? How to Look Them Up

Yes, Permits Are Public Record — But Know Which Jurisdiction You're In

Yes — building permits in Los Angeles are public record. The Los Angeles Department of Building and Safety (LADBS) explicitly makes records of commercial and residential buildings available for viewing and copying, with one notable exception: blueprints, which require the current owner's grant deed plus written authorization from the property owner or the architect of record, per LADBS's online building records page.

The depth of the archive is remarkable. Permit records date back to 1905, certificates of occupancy go back to 1940, and electrical, plumbing, and mechanical permits are available from 1985–1990 and 1996 to present. Everything can be searched online for free by address, and LADBS has since launched its newer PRISM platform for accessing permit and records information.

Before you start searching, though, there's a critical jurisdictional distinction to understand.

City of LA vs. LA County unincorporated territory

The lookup tools and records described above belong to the City of Los Angeles. Altadena, however, is LA County unincorporated territory — it falls under county channels, not LADBS. That means City of LA tools like the Online Building Records portal may not cover your Altadena property, and county-specific lookup procedures aren't detailed in the sources behind this guide. If you own a home in unincorporated LA County, verify which jurisdiction your parcel falls under before relying on city portals.

What the records tell you

For properties that do fall under city jurisdiction, the permit history is a complete biography of the house. The oldest permit on file is typically the original construction permit, from which you can trace every major change — re-roofs, additions, remodels, and earthquake repairs. As founding broker Justin Bonney of Clear Way Real Estate puts it, permits reveal what work was done, when it was done, and whether the city signed off on it.

That history matters whether you're buying or remodeling. A few red flags worth checking:

• A missing certificate of occupancy on any major addition or new construction — without it, the work is technically incomplete in the city's eyes
• Permits that were filed but never received final sign-off, which can signal unfinished or abandoned work
• Visible work — a converted garage, an added bathroom — with no permit on record at all
• Earthquake repairs, especially 1994 Northridge damage, that you can't verify as permitted and signed off

For Altadena homeowners, this due diligence is doubly valuable. Knowing your home's original construction permit and subsequent additions is the foundation of a preserve-first remodel — you can't thoughtfully renovate a 1920s Craftsman without knowing what's been changed since. At Altadena Home Remodeling, permit history is one of the first things we review when scoping a whole-home renovation, because surprises hidden in the walls are cheaper to find on paper than mid-demo.

If you're planning a remodel and want that history turned into a concrete plan, our free remodel-scoping consultation includes a before/after concept render of your space. Work is performed by JMB Builders LLC (CSLB #1103479), an Altadena-based licensed general contractor featured through paid placement.

How to Look Up Permit History Online, Step by Step

Ten minutes at your kitchen table can tell you more about a house than a full walkthrough — and it costs nothing. The City of Los Angeles has moved its permit history online, and the search process is simple once you know a few insider tricks.

Start at dbs.lacity.gov, where LADBS makes public records of commercial and residential buildings available for viewing and copying, except blueprints. Click the Online Building Records tile and search by address. LADBS has also launched PRISM (Permit & Records Information Search Module) at ladbsdoc.lacity.org as its newer platform for accessing permit and records information.

Before you type anything, note the search quirks that trip up first-timers. Founding broker Justin Bonney of Clear Way Real Estate, who has documented his own process, warns against including "Street," "Avenue," or "Boulevard" in the address — a common mistake that throws off results. He also recommends checking directional prefixes (East, South, North, West) and hovering over each result while scrolling through all pages of records to avoid missing permits.

Once you're in, the records go deep. Building permits date back to 1905, certificates of occupancy to 1940, and electrical, plumbing, and mechanical permits to 1985–1990 and 1996 to present. Many permits have PDF images attached, though pre-1990s permits were scanned from microfilm and are harder to read.

For records not available as PDFs, you have two fallbacks:

• Email LADBS at [email protected] with a Records Research Request Form.
• Book an in-person appointment at the Metro office (201 N. Figueroa St., 1st Fl, Rm 110, LA 90012) or Van Nuys office (6262 Van Nuys Blvd., 2nd Fl, Rm 251, Van Nuys 91401).

One important caveat for Altadena readers: these tools cover the City of Los Angeles, not unincorporated LA County. Altadena falls under county jurisdiction, so check whether your address falls within city limits before relying on these portals.

As Bonney puts it, "The tools are free, the information is public, and it only takes a few minutes." For Altadena homeowners planning a preserve-first remodel, that permit history is gold — the original construction permit and every addition since reveal exactly what you're working with. At Altadena Home Remodeling, we recommend pulling permit records before any scoping conversation. If you're ready to plan a renovation that honors your home's history, request a free remodel-scoping consultation with a before/after concept render. Work is performed by JMB Builders LLC (CSLB #1103479), our featured builder (paid placement).

Four Permit Red Flags to Check Before You Buy or Remodel

A permit file can hide problems that a fresh coat of paint never will. Licensed broker Justin Bonney, who has walked buyers through Los Angeles permit records extensively, recommends checking for four specific red flags before you close escrow or start a remodel — and since California agency disclosures do not require agents to check permit history, this research falls on you.

Red flag #1: A missing certificate of occupancy. LADBS has issued certificates of occupancy since 1940, so any major addition or new construction should have one on file. Without it, Bonney warns, "the work is technically not complete in the eyes of the city. That is a red flag worth knowing about before you close escrow."

Red flag #2: Permits filed without final sign-off. A permit that was opened but never closed suggests unfinished or abandoned work — and it becomes your problem the day you take ownership. Open permits can complicate future remodeling, refinancing, and resale.

Red flag #3: Visible work with no permit at all. A converted garage, an added bathroom, a second story that appears on no record — unpermitted work is worth investigating before you commit. It may need to be legalized retroactively, which costs time and money.

Red flag #4: Unverified earthquake repairs. Bonney pays particular attention to permits for 1994 Northridge earthquake repairs, especially in the San Fernando Valley. Repairs that were never permitted or signed off may not have been done to code.

The good news: checking takes minutes, not days. Permit records are searchable online for free, and as Bonney puts it, "The tools are free, the information is public, and it only takes a few minutes." One caveat for Altadena readers: the lookup tools above cover the City of Los Angeles, while Altadena sits in LA County unincorporated territory, where records run through county channels instead.

For buyers and remodelers alike, the permit history doubles as a design document. The oldest permit on file is typically the original construction permit, and tracing forward through re-roofs, additions, and remodels tells you exactly what you're working with — essential context for a preserve-first renovation of a Craftsman or historic home.

• Missing certificate of occupancy on a major addition or new construction
• Permits filed but never finalized — possible abandoned work
• Visible improvements with no permit on record
• Earthquake repairs without permits or final inspection sign-off

If your permit research turns up issues — or confirms your Altadena home is ready for its next chapter — a remodel-scoping consultation can help you plan around what the records reveal, with a before/after concept render so you can see the finished vision before committing. Work is performed by JMB Builders LLC (CSLB #1103479), a licensed Altadena general contractor; JMB Builders is a featured builder with paid placement on this site.

Records You're Legally Entitled to From the Seller

Here's a fact many LA buyers don't know: the seller is legally required to hand you the property's permit history before you commit. Under L.A.M.C. Section 96.300, sellers of residential property in the City of Los Angeles must apply for a Report of Residential Property Records and Pending Special Assessment Liens and deliver it to the buyer before entering a sale agreement or closing escrow.

The report costs the seller $70.85 and remains valid for six months after issuance. During that window, no new report is needed — but a copy must still be delivered to each buyer. Critically, the city is explicit that no signed waiver or other document can be accepted in place of a report issued by the city. A seller's "we'll skip the paperwork" agreement carries no legal weight here.

A second disclosure also applies. The 9A Report is a disclosure document that must be provided by the seller in all City of LA real estate transactions, per LADBS regulations. Together with the Residential Property Report, these documents give you an official, city-generated account of what's on file for the property.

Two exemptions exist: properties exempt from taxation under California's Documentary Transfer Act, and the first sale of a newly built home in a subdivision whose final map was approved within the prior two years. Everyone else in the City of LA is covered.

Keep the geography in mind, though. These buyer protections apply to City of Los Angeles transactions — not to LA County unincorporated areas like Altadena. Even where the mandate doesn't apply, requesting permit records from the seller is smart practice, and you can pull much of the history yourself using the free lookup tools covered earlier in this guide.

This paperwork matters most if you're buying with renovation in mind. Permit records reveal what work was done, when, and whether the city signed off — the foundation for planning a preserve-first remodel. At Altadena Home Remodeling, we treat the original construction permit and every subsequent addition as the starting point for a renovation that respects the home's existing structure rather than defaulting to demolition.

Before you close escrow or scope a remodel, check for these red flags in the records you receive:

• A missing certificate of occupancy on any major addition or new construction
• Permits that were filed but never received final sign-off
• Visible work — a converted garage, an added bathroom — with no permit on record
• Earthquake repairs, especially 1994 Northridge damage, that you can't verify were permitted and signed off

If the records raise questions, a free remodel-scoping consultation with Altadena Home Remodeling — including a before/after concept render — can help you understand what the existing structure supports before you commit. Renovation work discussed in that consultation, when built, is performed by our featured builder, JMB Builders LLC (CSLB #1103479), an Altadena-based licensed general contractor; this placement is paid and disclosed.

Turn Your Permit History Into a Remodel Plan

Your permit history isn't just paperwork — it's a blueprint for what your remodel should be. The oldest permit on file is typically the original construction permit, from which you can trace every major change the house has ever gone through, according to practical guidance from licensed broker Justin Bonney: re-roofs, additions, remodels, and earthquake repairs.

That timeline matters enormously in Altadena, where so many homes carry Craftsman-era bones worth preserving. If your records show a 1920s original construction permit followed by a modest 1950s bedroom addition, you know exactly where the character-defining structure ends and where expansion can happen without touching it. This is the foundation of a scope-first remodel: define what exists, what's protected, and what can change before anyone prices a thing.

Permit records reach back to 1905, with Certificates of Occupancy available from 1940 onward, per LADBS's official records page. That depth means most Altadena homes have a nearly complete paper trail. One caveat: those sources cover the City of Los Angeles, and Altadena falls in unincorporated LA County, so verify which jurisdiction holds your records before drawing conclusions.

Read your permit history with a remodeler's eye and look for:

• The original construction permit — your home's true "as-designed" baseline
• Addition permits and their final sign-offs, which confirm the square footage is legal and complete
• Structural or earthquake repair permits that signal where the framing has been altered or reinforced
• Gaps — visible work with no permit at all, which needs to be legalized before you build on top of it

Permits filed without a final sign-off can mean unfinished or abandoned work, as Bonney notes — the kind of hidden condition that reshapes a renovation budget if you discover it mid-project instead of during scoping. A preserve-first renovation succeeds or fails on this homework.

At Altadena Home Remodeling, we believe renovating beats demolishing, and the permit record is where that philosophy starts. If you're ready to turn your home's documented history into a renovation plan, book a free remodel-scoping consultation — you'll get a before/after concept render showing how your home's original character can carry forward into new space. This section is sponsored by our featured builder, JMB Builders LLC (CSLB #1103479), an Altadena-based licensed general contractor whose custom homes, ADUs, whole-home remodels, and Eaton Fire rebuilds are documented at jmb-builders.com.