Roof Replacementin Glendale, CA
Roof replacement in Glendale, California must meet the city's 2026 code: every re-roof needs at least a Class B fire-retardant covering, and wood roofs are banned. Roof repair counts too, and a roofing contractor must watch the 50 percent trigger: redo more than half the roof in a year and the whole covering must meet Class B.
Glendale roofs face long, hot summers and a short, wet winter. NOAA's 1991 to 2020 normals for the Burbank Glendale Pasadena Airport station, about 6.5 miles west of central Glendale, count 53.9 days a year above 90 degrees F and 7.2 days above 100, and 11.37 of the 13.91 inches of yearly rain arrive from December through March. That station sits on the valley floor, so hillside streets can differ. A fair inspection looks at what the first December storm will test: flashing, valleys, underlayment and the deck beneath them.
Only about 32 percent of the city's 75,907 housing units are detached houses, according to the Census Bureau's 2024 estimates, and about 27 percent of all units were built before 1950. The roofs a homeowner actually decides on are mostly on older single-family streets such as Rossmoyne, Rancho San Rafael and Adams Hill, and in a city where 66.5 percent of occupied homes are rented, the person signing for the roof is often a landlord. On a job like this, MDG Builders (CSLB #1040337) writes the scope, handles the permit and runs the schedule, while a licensed C-39 roofing subcontractor does the tear-off and installation. Our roofing page has the sourced price table, and neighboring cities have their own guides for Pasadena and Los Angeles.
What Glendale's building code and fire maps say about roofs
Where roofing permits come from in Glendale: City of Glendale Community Development Department, Building & Safety (Permit Services Center).
- Outside the fire hazard zones, Glendale's amended code (Residential Code R902.1.2 and Building Code 1505.1.2) requires a fire-retardant roof covering of at least Class B for every new structure, for any roof covering applied in the alteration, repair or replacement of an existing roof, and for the entire roof when more than 50 percent of the roof area is replaced within any one year. No wood roof covering may be installed.
- Glendale's amended R902.1 and 1505.1 send roofs in the Wildland Urban Interface (High Fire Hazard) areas to Chapter 7A and Section R337, and the City adopted the 2025 California Wildland-Urban Interface Code as Volume ID. The roof assembly must be tested to ASTM E108 or UL 790, and the amended R902.1 also calls for Class A or B roofing where the edge of the roof deck is less than 3 feet from a lot line.
- The Los Angeles County Public Works fire hazard plan review list, which cites the 2025 California Wildland-Urban Interface Code that Glendale adopted as Volume ID, requires Class A roof covering tested to ASTM E108 or UL 790, bans wood shingles and shakes, requires bird stops at eaves, mudded hip and ridge caps, valley flashing of at least 0.019 inch corrosion-resistant metal over a 36 inch wide 72 pound cap sheet, noncombustible gutters with a leaf guard, and vents that are listed to ASTM E2886 or covered with 1/16 to 1/8 inch noncombustible mesh. These are state code items shown on a County form, so confirm Glendale's parcel status and plan check list with Glendale Building & Safety.
- On July 29, 2025 the Glendale City Council unanimously adopted CAL FIRE's updated Local Responsibility Area fire hazard severity zone maps, the first revision since 2011. The News-Press reports 7,410 more parcels in the Very High zone for a total of 16,383 homes, an 83 percent increase, with fire-resistant building materials, mandatory brush clearance and sale disclosure for newly designated parcels.
- When finish roofing is removed down to existing spaced sheathing, Glendale's added Residential Code R908.7 (and Building Code 1512.6) requires new sheathing of at least 3/8 inch plywood, aligned over rafters, nailed to the old boards with 6d common nails at 6 inches on center at supported edges and 12 inches on center at intermediate supports.
- Glendale amends the clay and concrete tile attachment rules (Residential Code R905.3.8 and Table R905.3.8): perimeter tiles need at least two fasteners per tile, tiles that weigh less than 9 pounds per square foot need at least two fasteners per tile regardless of roof slope, and the manufacturer's instructions govern where design wind speed exceeds 130 mph or the roof is more than 40 feet above grade.
- The state code section that Ordinance 6043 does not amend (Building Code 1512.3 and Residential Code R908.3) bars recovering over an existing roof that already has two or more applications of roof covering, a water-soaked or deteriorated roof, or slate, clay, cement or asbestos-cement tile. A replacement removes all existing layers down to the roof deck. This text comes from a secondary code site, so confirm with Glendale.
- The California Energy Commission's 2022 single-family cool roof fact sheet says the prescriptive cool roof requirement applies to alterations where more than 50 percent of the roof is replaced, that only products with a Cool Roof Rating Council label may be used, and that roof area covered by integrated PV or solar thermal panels is exempt. The 2025 Energy Code took effect after that sheet was written, so confirm the edition and Glendale's climate zone values with Building & Safety.
Which roof coverings does Glendale allow for roof replacement after January 1, 2026?
Glendale adopted its Building and Safety Code, 2026 as Ordinance 6043 on November 4, 2025, and it took effect on January 1, 2026. One rule reaches every roof in the city, inside a fire zone or not: any covering applied when an existing roof is altered, repaired or replaced must be fire-retardant and rated at least Class B, and no wood roof covering may be installed. The amended text is in Ordinance 6043 on eCode360, under Residential Code R902.1.2 and Building Code 1505.1.2.
The 50 percent trigger catches owners who plan a repair in stages. If more than half of the roof area is replaced within any one year, the entire roof covering has to meet the Class B standard, so a front slope this winter and a back slope next spring can add up to a full re-roof in the code's eyes.
Two more limits apply. A new covering cannot go over a roof that already has two or more layers, is water-soaked or deteriorated, or is slate, clay, cement or asbestos-cement tile. That comes from state code that Glendale did not amend, and we read it on a secondary code site, so confirm it at the counter. Outside the fire zones, amended R902.1 still asks for Class A or B where the edge of the roof deck sits less than 3 feet from a lot line, which matters for a garage or addition built close to the boundary.
Put the roof area replaced and the fire class of the finished assembly on the proposal, so the 50 percent rule is a number rather than a debate.
Does Glendale roof replacement require new sheathing or extra fasteners?
Glendale adds two deck-level rules to the state code. When the finish roofing comes off down to old spaced boards, the added R908.7 calls for new sheathing of at least 3/8 inch plywood, aligned over the rafters and nailed to the old boards with 6d common nails at 6 inches on center along supported edges and 12 inches at intermediate supports.
For clay and concrete tile, the amended R905.3.8 asks for at least two fasteners per tile on the perimeter and on any tile weighing less than 9 pounds per square foot, whatever the slope. Where design wind speed passes 130 miles per hour, or the roof is more than 40 feet above grade, the manufacturer's instructions govern.
A fair proposal states four things in writing:
- The fire class of the finished assembly, not only the brand of the covering
- The roof area replaced, so the 50 percent rule is a number you can check
- Whether the deck is solid or spaced boards, and what the sheathing will be
- The fastener count per tile if the roof is clay or concrete tile
Is my Glendale house in a Very High Fire Hazard Severity Zone?
Find out before you choose a material. On July 29, 2025 the City Council adopted CAL FIRE's updated Local Responsibility Area maps, the first revision since 2011. The Glendale News-Press reported 7,410 more parcels in the Very High zone, for a total of 16,383 homes, an 83 percent increase, with fire-resistant building materials, mandatory brush clearance and disclosure at sale for the newly designated parcels. A house outside every zone at its last re-roof may sit inside one today.
We could not read the City's own fire hazard pages, and Glendale's ordinance sends zone roofs to Chapter 7A and Section R337 without reprinting them, so we cannot say which parcels fall where. Ask the Glendale Fire Department for your parcel's status before any quote names a covering.
Inside a zone the whole assembly changes. Glendale adopted the 2025 California Wildland-Urban Interface Code as Volume ID, and the assembly must be tested to ASTM E108 or UL 790. The Los Angeles County Public Works plan review list for that code is a County form quoting state rules, so treat it as a preview and ask Glendale Building and Safety for your lot's checklist. It asks for:
- Class A covering, with no wood shingles or shakes
- Bird stops at the eaves and mudded hip and ridge caps
- Valley flashing of at least 0.019 inch corrosion-resistant metal over a 36 inch wide 72 pound cap sheet
- Noncombustible gutters with a leaf guard
- Vents listed to ASTM E2886 or covered with 1/16 to 1/8 inch noncombustible mesh
Can you re-roof a house in Rossmoyne or another Glendale historic district?
Glendale has five designated historic districts: Royal Boulevard with 30 houses, Ard Eevin Highlands with 87 homes, Cottage Grove with 14, Brockmont Park with 58 and Rossmoyne, the largest, with 503 houses. A roof in any of them is judged by Chapter 30.25 of the Municipal Code, and a landmark or Glendale Register property outside a district is judged by Chapter 15.20.
The dividing line is 100 square feet. Replacing up to 100 square feet of roof or wall cladding with matching material counts as routine maintenance and skips design review, while a change to roof form or roof cladding is a major alteration that goes to the Historic Preservation Commission or the director. A permit issued without the approval it needed is void. A full re-roof is far more than 100 square feet, so treat it as a conversation with Planning before the permit application, and ask whether a like-for-like replacement is decided by staff or by the Commission.
We could not read the district guidelines or the survey notes for each street, so we cannot say which materials or colors a given house must keep. Switching from shingle to tile, or tile to metal, is a change of cladding, so raise it with Planning first.
Does a Glendale roof repair or re-roof need a permit, and what else gets checked?
The City's re-roof page, permit portal instructions, fees and turnaround times all refused our requests, so none of them appear here. What we can document is this: the state model list of permit-exempt work has no roofing item, we found no Glendale amendment adding one, and Glendale's section 105.1 says anyone who intends to alter or repair a building must apply to the building official first. Treat a re-roof as a permitted job and confirm the current handout with the Permit Services Center.
Permits also expire. Under Glendale's amendments an application is deemed abandoned one year after filing unless pursued in good faith, and the building official can extend that by up to 180 days. An issued permit becomes invalid if work does not start within 180 days or is suspended for 180 days.
Two other checks ride along. The California Energy Commission's single-family cool roof fact sheet applies the prescriptive cool roof requirement when more than 50 percent of the roof is replaced, allows only products with a Cool Roof Rating Council label and exempts roof area under integrated solar panels. It was written for the 2022 Energy Code and the 2025 edition took effect on January 1, 2026, so we print no reflectance number. Rooftop solar of 10 kW AC or 30 kW thermal or less on a single or duplex dwelling gets an expedited permit under Glendale's R105.3.1.1, with a checklist and one inspection.
Roof replacement in Glendale, California: what does it cost?
We found no Glendale price survey, so this page prints no Glendale price. The nearest sourced figures are for Los Angeles, from two publishers who measure different things. Angi's July 2026 Los Angeles page surveys what real customers paid and lands on $10,000 to $25,000 for a typical asphalt shingle roof, with tile at $7 to $15 per square foot and metal at $7 to $16. Remodeling magazine's 2025 Cost vs. Value report prices one reference roof for Los Angeles at $36,417 in asphalt and $62,069 in metal and does not publish that roof's size, which explains the gap.
Roof size and pitch come first. After that, Angi lists tear-off at $1,000 to $3,000 and taking solar panels off and putting them back at $500 to $1,000. Glendale's code adds scope that neither survey prices, so ask each bidder to price these on separate lines:
Rotted decking found after tear-off is the usual surprise. Settle how the proposal handles it before you sign. A unit price per sheet, agreed in writing, is easier to live with than an open-ended change order.
- Plywood over spaced boards
- Extra fasteners on clay or concrete tile
- In a fire zone, the gutters, vents and flashing
- Solar panel removal and reset
How do you choose a roofing company in Glendale for roof repair or replacement?
Roofing is CSLB license class C-39, defined as installing products and repairing surfaces that seal, waterproof and weatherproof structures, including shingles, roof tile, slate and metal roofing systems. Look the number up on the CSLB site before you talk price, and read our guide to checking a contractor's license for what the record shows. Glendale adds a layer: contractors pay a City license fee under Municipal Code 15.26.010, and City licenses expire each December 31, so ask for the current one.
The unlicensed work limit is $1,000 for labor, materials and all other costs, raised from $500 on January 1, 2025 by AB 2622. It does not apply when the work needs a permit or the person hires any worker, so a permitted re-roof is never an unlicensed job.
The written contract matters as much as the license. Business and Professions Code 7159, as amended by SB 517 effective January 1, 2026, requires a signed contract before work, caps the down payment at $1,000 or 10 percent, whichever is less, ties progress payments to work completed, and gives you three business days to cancel, five if you are a senior. On an MDG job you can ask for the roofing subcontractor's license number and certificate of insurance before you sign, and our article on how general contractors use subcontractors explains who answers for what.
Roofing photos from Glendale and nearby communities
Six roofing scenes tied to Glendale neighborhoods and to nearby communities such as La Cañada Flintridge and Burbank, with tile, shingle and metal work shown in the sun the city actually gets.
Where the roof numbers come from
The closest independent data for Glendale is Los Angeles pricing, and every figure with its source is in the table on our roofing price page. For a plain-language walk through Angi, Cost vs. Value and the gap between them, read the California roof replacement cost guide. Fence and paint work often follow a new roof, and the Glendale rules for those are on the fencing page and the painting page.
| What it covers | Typical range |
|---|---|
| Asphalt shingle, typical single-family roof | $10,000 to $25,000 |
| Concrete or clay tile | $7 to $15 per sq ft |
| Metal | $7 to $16 per sq ft |
| Remodeling Cost vs. Value 2025, Los Angeles | Asphalt $36,417. metal $62,069. |
| Extras | Tear-off $1,000 to $3,000. solar detach and reset $500 to $1,000. |
Glendale roofing questions, answered
How much should a 2,000 sq ft roof cost in Glendale?
Price it by roof area, not house size. Angi's July 2026 Los Angeles data gives $4 to $12 per square foot for asphalt, $7 to $15 for tile and $7 to $16 for metal, before extras such as tear-off at $1,000 to $3,000. Glendale has no published survey, so a measured written proposal is the real price.
What is the 25% rule for roofing?
We found no California or Glendale code section called a 25 percent rule, and contractor sites that quote it rarely name a source. The rule we can cite is Glendale's 50 percent trigger: replace more than half the roof area within one year and the whole covering must meet at least Class B.
Do I need a permit for roof repair or roof replacement in Glendale?
Plan on yes. The state list of permit-exempt work has no roofing item, we found no Glendale amendment adding one, and Glendale's section 105.1 requires anyone altering or repairing a building to apply first. The City's own re-roof page would not load for us, so confirm the current handout with the Permit Services Center.
Does a Glendale roof have to be Class A?
Only in the fire hazard zones. Outside them, a Glendale re-roof needs at least Class B. Inside, the state wildland-urban interface code, adopted as Volume ID, requires assemblies tested to ASTM E108 or UL 790, which the County plan review list reads as Class A. The 2025 maps added 7,410 Very High parcels.
Should a 20-year-old roof get roof repair or a full roof replacement in Glendale?
Not automatically, because condition matters more than age. Ask a roofer to inspect the flashing, underlayment and deck and to photograph what they find. We found no sourced lifespan for Glendale roofs. Replacing more than 50 percent of the roof in a year brings the whole covering to Class B.
What is the cheapest month to replace a roof in Glendale?
We found no sourced price pattern by month, so we will not name one. The weather data does support scheduling: NOAA's normals show 11.37 of Glendale's 13.91 inches of rain falling from December through March and almost none in July and August. Dry weather makes a tear-off easier to protect.
Can you negotiate roof pricing?
Yes, but negotiate scope before price. Collect at least two written proposals that list roof area, fire class, sheathing and extras on separate lines, then compare them. California Business and Professions Code 7159 caps a down payment at $1,000 or 10 percent, whichever is less, so a large deposit is a reason to walk away.
What is the most expensive part of replacing a roof?
Usually the covering you choose. Cost vs. Value 2025 prices a Los Angeles asphalt roof at $36,417 and a metal one at $62,069. Next come tear-off at $1,000 to $3,000 and rotted decking found after tear-off, and in a Glendale fire zone the gutters, vents and flashing add cost as well.
How do I choose a roofing contractor in Glendale?
Start with the license: roofing is CSLB class C-39, and the CSLB lookup shows status, bond and workers' compensation. Then ask for the written contract that Business and Professions Code 7159 requires, the City of Glendale contractor license under Municipal Code 15.26.010 and proof of insurance. A permitted re-roof is never unlicensed work.
Do solar panels change a Glendale re-roof?
Yes. Panels often have to come off and go back on, which Angi's Los Angeles page prices at $500 to $1,000. Glendale gives rooftop solar of 10 kW AC or less on a one or two family home an expedited permit with one inspection, and roof area under integrated panels is exempt from the cool roof rule.
Ask for a roof inspection in Glendale
Send the address and what you have seen from the ceiling or the gutters. We check the fire zone, historic district and tile or spaced-board questions on the parcel before we call back.