Roofing Contractor in Ventura County
NEMA Roofing is a roofing contractor in Ventura County for roof repair, emergency repair, tile and flat roof work and full roof replacement, from Oxnard, Ventura and Port Hueneme on the coast to Camarillo, Thousand Oaks, Simi Valley, Santa Paula and Ojai inland. NEMA has five Google-verified locations, in Santa Barbara, Oxnard, Woodland Hills, Tarzana and Downey, and fully covers all five counties it serves with a team near every town; the Oxnard office at 300 E Esplanade Dr is in the county, and the Santa Barbara, Woodland Hills and Tarzana locations are next door. Call 805-977-5949 to book an inspection. Across the county the rules for a new roof change with three things: the city that permits it, the climate zone of your ZIP code and whether your address is in a fire hazard zone.
Who permits a roof replacement in Ventura County?
Each city runs its own permits, and the unincorporated county has its own rules:
| Where | Permit authority | What it publishes about roofs |
|---|---|---|
| Oxnard | Building and Engineering Division | Permit required for repairs over 40 square feet and any repair that reaches the underlayment or structure |
| Camarillo | Building and Safety Division (run under contract by Charles Abbott Associates) | Replacing roof coverings needs a permit; applications are digital only since July 1, 2025 |
| Thousand Oaks | Building Division (TO/24 portal) | No reroof-specific handout |
| Santa Paula | Building and Safety Department | Re-roof permits over the counter, usually without plans |
| Ojai | City Building and Safety Division (not contracted to the County) | No reroof-specific handout |
| Unincorporated areas of the county | County of Ventura Resource Management Agency, Building and Safety | The County’s list of work exempt from permits has no roofing item, so even a small reroof needs a permit |
Two climate zones: where the cool-roof rule applies
Ventura County is split between energy code Climate Zone 6 on the coast and Climate Zone 9 inland: of the county’s ZIP codes on the California Energy Commission’s list, 22 are in Zone 6 and 24 in Zone 9. The difference matters when more than half of a house roof is replaced. In Zone 6 a pitched roof has no cool-roof requirement. In Zone 9 the new pitched-roof covering needs an aged solar reflectance of at least 0.20 and a thermal emittance of at least 0.75, or a Solar Reflectance Index of 16, unless the house qualifies for an insulation or heavy-roof exception. Flat and low-slope sections have higher values in both zones. The 2025 energy code, in force since January 1, 2026, kept these values.
The zones also track the weather. The Oxnard Ventura County Airport station on the coast averages an August high of 73.5°F and about 2 days a year at 90°F or above; the Ojai station inland averages 91.2°F in August and about 75 days at 90°F or above (NOAA 1991-2020 normals). Inland roofs take more heat; coastal roofs mostly wear from age and winter storms.
Fire hazard zones, city by city
The updated state Fire Hazard Severity Zone map for local responsibility areas in Ventura County was recommended on March 10, 2025, and the State Responsibility Area map has been in force since April 1, 2024. How much of each city they cover varies widely. Sampling both maps across each city boundary gives these shares of land in a mapped zone:
| City | Very High | Any zone |
|---|---|---|
| Ojai | about 60% | about 84% |
| Thousand Oaks | about 70% | about 81% |
| Santa Paula | about 33% | about 58% |
| Camarillo | about 14% | about 25% |
| Oxnard | none | about 5% |
In a High or Very High zone, or any zone on the State Responsibility Area map, the state Wildland-Urban Interface Code, in force since January 1, 2026, requires a Class A roof covering whenever a roof is replaced, or 50% or more of it within 12 months. State law (Health and Safety Code section 13132.7) also requires the installer to give the owner the manufacturer’s certification of the covering’s fire class. Where that code does not apply, the state Health and Safety Code sets the floor: at least a Class C covering when more than half of a roof is replaced within a year, and higher classes in Very High zones and most State Responsibility Areas.
Ventura County's housing age
The county has 295,878 housing units; 55.4% were built before 1980 and the median year built is 1978 (Census ACS 2024 5-year). The city figures differ: 75.6% of Ojai’s housing and 72.6% of Santa Paula’s predate 1980, against 57.1% in Oxnard, 56.5% in Thousand Oaks and 45.2% in Camarillo. On an older house, a reroof usually means a full tear-off and a check of the deck before the new roof goes on. See roof replacement, tile roofing and flat roof repair.
Towns we serve in Ventura County
Coast, Climate Zone 6: Camarillo, Oxnard, Port Hueneme, Ventura.
Inland, Climate Zone 9: Brandeis, Fillmore, Moorpark, Oak Park, Oak View, Ojai, Santa Paula, Simi Valley, Somis, Thousand Oaks.
Split by ZIP code: Newbury Park and the Newbury Park part of Thousand Oaks (ZIP 91320 is Zone 6; the other Thousand Oaks ZIP codes are Zone 9).
Unincorporated communities (communities without a ZIP code of their own; the zone follows your ZIP code): Bell Canyon, Channel Islands Beach, El Rio, Mira Monte, Saticoy.
Next door in Los Angeles County: Westlake Village (Climate Zone 9).
Book a roof inspection in Ventura County
Call 805-977-5949 or use our contact form. NEMA Roofing holds CA contractor license #1083283 and is a GAF Master Elite contractor and an Owens Corning Preferred Contractor. For a single leak see roof repair; for all five counties we serve, see our service areas.