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Roofing Contractor in Chino Hills, CA, for Shake Roofs Under Ordinance 427
Chino Hills Ordinance 427, adopted November 25, 2025, has required every roof covering in the city to be Class A since January 1, 2026, and its one exception allows repair or reroofing of no more than 25% of the roof area in any 12-month period with matching material. For a roofing contractor in Chino Hills, CA, that exception shapes most calls about the wood shake roofs the City says many existing structures still have.
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Ordinance 427's Class A rule and its 25% exception
The ordinance replaces California Building Code Section 1505.1 and Residential Code Section R902.1 with one sentence: “The roof covering on any structure regulated by this Code shall be Class A.” Its findings cite Santa Ana winds as a fire risk and state that “Many existing structures also have wood shake roofs.” The full text is in the City’s building code update ordinance, which also adopts the 2025 California Residential and Building Codes.
Repair or reroof of 25% or less of the roof in 12 months
Matching material allowed
More than 25% within 12 months
Class A covering required
Full replacement or new roof
Class A covering required
Source: City of Chino Hills Ordinance No. 427 (adopted November 25, 2025).
The 12-month window is the detail owners tend to miss. A shake roof patched in spring and again after a fall windstorm can pass 25% across the two jobs, and after that any further work has to be Class A. Before quoting another shake repair, we ask what was repaired in the past 12 months and measure it against the total roof area.
Wood shake on Chino Hills' 1980s and 1990s homes
Chino Hills grew late. San Bernardino County began the Chino Hills Specific Plan in 1979 and approved it in 1982, and by American Community Survey figures (2014-2018), 35.5% of homes were built in the 1980s and 32.0% in the 1990s, with only 17.3% older. Most pre-1970 homes are in Los Serranos and in the Sleepy Hollow area of Carbon Canyon, where a 1928 summer resort of about 90 cabins turned into year-round homes after World War II.
Whatever the covering, a roof installed in the 1980s or 1990s is now roughly 27 to 46 years old. When a shake roof comes off, the replacement has to be Class A, and the usual choices are:
- Concrete or clay tile: heavier than shake, so the framing is checked before the change
- Class A asphalt shingles: a much lighter Class A option than tile
- Either one on a new deck: shake is often laid on spaced boards, which get covered with solid sheathing before underlayment goes down
Santa Ana gusts of 60 to 75 mph and roof fastening in Chino Hills
The City’s 2025 Hazard Mitigation Plan describes Santa Ana winds of 25 to 40 mph with gusts of 60 to 75 mph, often with heat and low humidity, and several high-wind events above 50 mph each year. The same plan names the 2008 Freeway Complex Fire and the 2020 Blue Ridge Fire as federally declared disasters; the Blue Ridge Fire burned 13,964 acres in the Yorba Linda and Chino Hills area, destroyed one structure, and damaged 12.
The City’s wildfire page gives homeowners four roof tasks: inspect shingles or tiles and replace loose or missing ones, cover attic vents with metal mesh no larger than 1/8 inch, enclose eave and soffit vents with metal mesh, and clear leaves from gutters. On a reroof, all four are built in: tile, hip, and ridge pieces fastened for the wind, vents screened, and gutters cleaned out when the job is done. Inspection requests go through the City’s Virtual Development Services portal, and requests made by 2 p.m. are scheduled for the next day.
Tile roof installation and repair by a roofing contractor in Chino Hills, CA
Overhead Roofing takes on these jobs in Chino Hills, with a fast response and same-day visits when crews are available:
- Roof repair in Chino Hills: matching repairs within the 25% allowance, leaks at flashing, valleys, and vents, and slipped or wind-lifted tile and shingles
- Roof replacement in Chino Hills: shake tear-offs, solid sheathing where needed, new underlayment and flashing, and a Class A covering
- Tile roof installation: concrete and clay tile roofs laid over new underlayment, after the framing check
Chino Hills sits in climate zone 10, where a residential steep-slope reroof covering more than half the roof needs a CRRC-rated cool roof product. Ordinance 427 adds the Class A requirement, so the estimate should name a product that carries both.
We hold CSLB license #1119699 (C-39 Roofing), are bonded and insured, and carry BBB Accreditation with an A rating, and our team brings 25+ years of roofing experience. Estimates are free, completed roofs come with a workmanship warranty, and permits are pulled from Chino Hills Building & Safety at City Hall, 14000 City Center Drive. More Inland Empire cities are on our San Bernardino County roofing page.
Chino Hills questions on Ordinance 427, shake, and wind
Can I still repair my wood shake roof in Chino Hills?
Yes, within limits. Ordinance 427 lets you repair or reroof no more than 25% of the total roof area in any 12-month period with material that matches the existing roof. Past that point, the new covering must be Class A. Count repairs from the past 12 months, not just the current job, before choosing another shake patch.
Who issues reroof permits in Chino Hills?
The City’s Building & Safety Division, part of Community Development, at City Hall, 14000 City Center Drive, (909) 364-2780. It is open Monday through Thursday, 7:30 a.m. to 5:30 p.m., and Friday until 4:30 p.m. Applications and inspection requests go through the Virtual Development Services portal, and requests made by 2 p.m. get next-day inspections.
Does a Class A reroof in Chino Hills also need a cool roof?
If more than 50% of the roof is replaced, yes. In climate zone 10, the 2025 Energy Code asks for a CRRC-rated product on a pitched residential roof and cool roof compliance on a low-slope one, with some exceptions. Ordinance 427 then adds its own condition: whatever product goes on must also be Class A.
What should tile roof installers in Chino Hills, CA, check before replacing shake with tile?
The framing comes first, since concrete or clay tile weighs more than shake. The deck is next: shake often sits on spaced boards that need solid sheathing before underlayment and tile go on. Then come the details the City’s wildfire page stresses, including attic vents with metal mesh no larger than 1/8 inch and enclosed eave and soffit vents.
What should I check on my Chino Hills roof after a Santa Ana wind event?
From the ground, look for loose, slipped, or missing tiles and shingles, lifted ridge pieces, and debris in gutters and valleys. The City’s Hazard Mitigation Plan counts several 50+ mph wind events a year, with Santa Ana gusts of 60 to 75 mph. If you find damage, we photograph it and write an estimate you can send to your insurer; we don’t file or settle claims.
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