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Roof Repair and Replacement in the San Fernando Valley
Roof repair in the San Fernando Valley follows different rules depending on the city your house is in. About two-thirds of the Valley’s land is in the City of Los Angeles, and the separate cities of Burbank, Glendale, San Fernando, Calabasas and Hidden Hills each run their own building department or contract.
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For roofing in the San Fernando Valley, three things change from one address to the next: who permits the work, whether the lot is in a Very High fire zone, and how summer heat treats the low-pitched roofs of the Valley’s post-war Ranch houses. Our roofers handle repairs, roof replacement and full reroofs on the valley floor and in the hills.
LA City neighborhoods and the Valley's separate cities
Van Nuys, Sherman Oaks, Northridge, Woodland Hills, Encino, Tarzana, Canoga Park and many other Valley neighborhoods are part of the City of Los Angeles. Their reroof permits come from the Los Angeles Department of Building and Safety (LADBS), online through PermitLA or at the Van Nuys Development Services Center, 6262 Van Nuys Blvd. LADBS also runs an inspection office at 19040 Vanowen St. in Reseda.
Two LADBS express permit rules apply in every one of those neighborhoods, from Sylmar to Studio City. A reroof inside a Very High Fire Hazard Severity Zone must be Class A, and a residential roof replacement covering more than 50% of the roof must use a cool roof product with Cool Roof Rating Council (CRRC) certification.
LA neighborhoods (Van Nuys, Valley Village, Northridge, Sylmar and others)
LADBS: PermitLA or 6262 Van Nuys Blvd.
Class A in Very High zones; CRRC cool roof on replacements over 50%
Burbank
Burbank Building & Safety, 150 N. Third St.
Tier 1 permit, online or at the counter
Glendale
Glendale’s own building department
Not handled by LADBS
City of San Fernando
City Hall, 117 Macneil St.
Mon. to Thu., 8:30 a.m. to 12:30 p.m., or online
Calabasas
Calabasas Building & Safety, 100 Civic Center Way
Whole city is Very High; Class A on every reroof
Hidden Hills
Transtech (contract), online Permit Center
Inspections need 24 hours’ notice
Sources: LADBS, City of Burbank, City of San Fernando, City of Calabasas, LA County Public Works and City of Hidden Hills.
Flat valley floor, Very High fire zones on the rim
Mountains ring the Valley: the Santa Monica Mountains to the south, the Simi Hills to the west, the Santa Susana Mountains to the northwest, the San Gabriel Mountains to the northeast and the Verdugo Mountains to the east. The Very High Fire Hazard Severity Zones sit along those edges. In LA County’s 2025 fire hazard map layer, a point on the valley floor in Van Nuys is classed Non-Wildland, while a point in the Porter Ranch foothills is Very High.
Coverage of CAL FIRE’s March 2025 maps put nearly all of the Santa Monica Mountains in the Very High class and showed newly added patches in Granada Hills. The county map layer also shows the Tarzana and Encino hills as Very High. Whether a given lot falls inside the line depends on the map its city enforces, so check the parcel before planning a reroof on a foothill street.
Some of today’s rules trace back to a fire in Chatsworth. The September 1971 Chatsworth Fire destroyed or damaged 198 homes and led to the city’s Fire Buffer Zones. In 1999, Los Angeles replaced those buffer zones and its older Mountain Fire District with the Very High Fire Hazard Severity Zone. Recent fires along the Valley’s edges include:
- Saddle Ridge Fire, Sylmar, Oct. 10, 2019: 8,799 acres, 19 structures destroyed and 88 damaged
- Hurst Fire, Sylmar, Jan. 7, 2025: 799 acres and 2 structures damaged
- Kenneth Fire, West Hills, Jan. 9, 2025: 1,052 acres
- Palisades Fire evacuation warning, Jan. 11, 2025: reached the Encino hills between Mulholland Drive and Ventura Boulevard
For the roof itself, the LA rule is straightforward. Outside the Very High zone, LADBS issues an express reroof permit for a Class A or Class B covering that weighs under 6 pounds per square foot. Inside it, Class A is required, and Fire Code brush clearance applies to the lot.
Calabasas applies Very High zone rules everywhere. Its roofing handout (revised Jan. 30, 2026) states that the City of Calabasas is a Very High Fire Severity Zone, and its reroof checklist requires every reroof permit to meet Class A fire-rating requirements. The city’s other roofing rules:
- Wood shakes and shingles are prohibited.
- New tile, or any roofing that adds more than 4 lb per square foot, needs stamped engineering calculations.
- Torch-down assemblies need a UL Class A listing.
- Required inspections are roof sheathing and final.
The weight rule matters most when a house goes from shingles to tile, because tile adds load the framing may not have been designed to carry (our guide on switching from shingles to tile explains what gets checked). Calabasas permits go through its Building & Safety office at 100 Civic Center Way, which LA County Public Works runs under contract.
Hidden Hills contracts its building and safety, planning and engineering to Transtech. Applications, fees and inspection requests all go through the city’s online Permit Center, and inspections need 24 hours’ notice, so each request has to go in a day before the crew needs the inspector.
Low-pitch Ranch roofs and Valley summers
The Valley’s population doubled between 1945 and 1950, to just over 400,000, as agricultural land was subdivided into tracts (SurveyLA). LA City Planning’s Ranch House study calls the post-war Valley “the perfect blank canvas” for Ranch houses. It names Marlow-Burns’s mass-produced Toluca Wood and the Charles Dubois-designed Ranches of the Woodside subdivision in Woodland Hills, and it notes customized Ranches particularly in the Northridge area and Traditional Custom Ranches in the hills.
The study also describes the roofs, which differ by Ranch type:
- Traditional Ranch: low-pitched gable roofs with wide eaves and exposed rafter tails, originally shingled
- Contemporary Ranch: lower-pitched roofs, sometimes finished as rock roofs
- Hacienda Ranch: clay tile
Valley summer days run hotter than in the Los Angeles Basin, and winter nights colder. On Sept. 6, 2020, Woodland Hills reached 121°F, which the National Weather Service called the highest official temperature ever recorded in LA County. Heat like that dries out asphalt shingles and the sealant at flashing, and a shallow roof sheds water slowly, so wear on a Ranch roof can turn into leaks sooner than it would on a steeper one.
The flattest sections, including the rock roofs on some Contemporary Ranches, usually need a low-slope system such as modified bitumen cap sheet rather than shingles. In LA neighborhoods, replacing more than half of a residential roof also brings in the LADBS cool roof rule, so the new product must carry a CRRC rating.
Roof repair and roof replacement across the San Fernando Valley
Overhead Roofing is a licensed roofing contractor (CSLB #1119699, C-39 Roofing), bonded, insured and BBB Accredited with an A rating, and our team brings 25+ years of roofing experience. Our roofers work throughout the San Fernando Valley on:
- Shingle roof repair and replacement on Traditional Ranch houses, including underlayment, drip edge and ridge cap
- Rock roof and low-slope replacement on Contemporary Ranches, with cap sheet or other low-slope systems
- Clay tile repair and resets on Hacienda Ranches and other tile-roofed houses
- Class A reroofs in the foothill fire zones and throughout Calabasas
- Commercial flat roofs, including torch-down cap sheet and silicone roof coatings
We pull the reroof permit from whichever department covers the address: LADBS, Burbank, Glendale, San Fernando, Calabasas or Hidden Hills. For examples of the work, see our residential shingle reroof in Los Angeles and our torch-down flat roof in Bell.
Active leaks are covered by 24/7 emergency roof repair, with fast response and same-day visits when crews are available. Every estimate is free, and our workmanship warranty covers each job.
Valley roofing questions, from the flats to the foothills
I live in Sherman Oaks. Does my reroof permit come from the City of Los Angeles?
Yes. Sherman Oaks, like Van Nuys, Northridge and the Valley’s other LA neighborhoods, is part of the City of Los Angeles, so the permit comes from LADBS, online through PermitLA or at the Van Nuys Development Services Center, 6262 Van Nuys Blvd. Addresses in Burbank, Glendale, San Fernando, Calabasas and Hidden Hills go through those cities instead.
Is the flat part of the Valley in a Very High fire zone?
Generally not. In LA County’s 2025 fire hazard map layer, a point on the valley floor in Van Nuys is classed Non-Wildland. The Very High zones run along the mountain edges: the Santa Monica Mountains, the Porter Ranch foothills, the Verdugo hills and new patches in Granada Hills. Calabasas is the exception, since the city treats all of its land as Very High.
How many roof layers does Calabasas allow?
Two in total. The Calabasas roofing handout allows composition shingles over a sound existing roof only up to two layers. Re-covering is not allowed over tile, over a water-soaked roof or where two layers already exist, and the finished roof still has to meet the city’s Class A requirement. The required inspections are roof sheathing and final.
Will replacing my roof in Woodland Hills require a cool roof?
If you replace more than 50% of a residential roof in Woodland Hills or any other LA neighborhood, yes. LADBS requires a cool roof product with Cool Roof Rating Council (CRRC) certification. Ask for the CRRC listing of the product named in your estimate. The rule is triggered by replacing more than half the roof, not by a small repair.
What replaces a rock roof on a Valley Ranch house?
Rock roofs appear on Contemporary Ranch houses, which LA City Planning’s Ranch House study describes as having lower-pitched roofs. Many are too flat for asphalt shingles, so the usual replacement is a low-slope system such as modified bitumen cap sheet, installed after the gravel and old layers are removed down to the deck.
Where do I get a reroof permit in the City of San Fernando?
At San Fernando City Hall, 117 Macneil St., where the Building & Safety Division issues permits Monday through Thursday from 8:30 a.m. to 12:30 p.m. Applications can also go through the city’s Online Permit Counter. San Fernando is a separate city, not part of Los Angeles, though it coordinates fire code enforcement with the Los Angeles Fire Department.
More on Valley cities, roof services and our work
Valley city pages
Roof services for Valley homes
Reviews from our customers on Google
Real reviews left on the Overhead Roofing Google Business Profile.
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