Skylight Permit Guide Los Angeles

The permit question comes up on almost every estimate call. The answer is never the same across the board, because Los Angeles is not one building department, it is dozens. Here is the actual permit landscape for skylight work across the jurisdictions we work in most.

The Core Rule

New openings always require permits. You are cutting through a roof structure and creating a weatherproof assembly from scratch. Every LA-area jurisdiction requires a permit for this regardless of unit size.

Replacements in the same opening are often exempt, but not always. The key question is whether anything structural changes. Like-for-like replacement (same size, same location, same opening) is typically exempt. Expanding the opening, cutting a rafter, or converting from dome to glass in a curb that stays the same is usually also exempt. We verify this for every job before starting the permit process.

Repairs are never permitted. Re-flashing, glazing replacement, sealant work, none of it requires a permit anywhere in LA.

LADBS, City of Los Angeles

LADBS covers the City of Los Angeles including Sherman Oaks, Encino, Silver Lake, Los Feliz, West Hollywood, and dozens of other neighborhoods. Standard residential skylight installations are typically available over-the-counter, same-day permit issuance when the submittal package is complete. Jobs that require cutting a rafter need a structural calculation. Permit fees: $150–$350.

LA County, Unincorporated Areas

Unincorporated LA County (Altadena, parts of East LA and the San Gabriel Valley) goes through LA County Building and Safety, not LADBS. Same general permit requirements, different forms and contacts. Altadena fire rebuild projects require Chapter 7A compliance documentation on top of standard submittals.

City of Pasadena

Pasadena Building and Safety runs its own department with a thorough plan review process. Standard residential permits run one to two weeks for plan check. Properties in designated historic areas may require additional Pasadena Historic Preservation Commission review for street-facing work, rear slope installations typically do not trigger this. Fees: $175–$400.

City of Glendale

Glendale Building Division processes residential permits with plan check typically running one to two weeks. Hillside properties may need additional documentation. Fees: $150–$350.

City of Beverly Hills

Beverly Hills requires plan check for all skylight installations with no over-the-counter option. Plan check runs two to four weeks. Engineer calculations required for any structural work. This is the longest permit timeline in our normal service area. Fees: $250–$500. Budget the extra time in your project schedule.

City of Santa Monica

Santa Monica Building and Safety processes permits in one to two weeks. Properties in the Coastal Zone (roughly west of Lincoln Blvd) may need a Coastal Development Permit in addition to the standard building permit. Fees: $200–$450. Check your address against the Coastal Zone map before starting.

City of Burbank

Burbank Building Division is one of the more efficient departments we deal with. Standard residential permits are often available over-the-counter. Fees: $150–$300.

What Happens If You Skip the Permit

Unpermitted structural work shows up during resale inspections. Title companies flag it, buyers use it as leverage, and you can end up needing a retroactive permit or removing the work. The permit cost on a skylight is $150–$500. It is not worth skipping.