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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Installation Across West Hollywood
Roof installation in West Hollywood runs $9,800 – $28,500 for a typical single-family home, with flat commercial and multifamily TPO jobs ranging $14,000 – $45,000 depending on square footage and penetration count. We’re Mercer Roofing Co Los Angeles, led by Grant Whitlock, and we’ve been handling West Hollywood’s tight lots, shared walls, and design-review requirements since 2000. If you’re pricing a full replacement or a new build roof, call (213) 521-8272 for a written, line-item estimate before any work starts.
West Hollywood is not an easy city to roof. Narrow streets, historic low-rise apartment stock, noise ordinances, and a design review board that inspects what’s visible from the Sunset Strip. Most roofing pages won’t tell you that. We will, because it changes how the job gets quoted and scheduled.
Why Mercer Roofing Co Los Angeles Is West Hollywood’s Preferred Roof Installation Company
Homeowners in West Hollywood call us because the process is clear from the first phone call. You get a written price before any work begins. You know the technician’s name and face before they arrive. And every repair includes a written guarantee, with a free second visit if the repair fails. For a full installation, the 365-Day Done Right Promise applies: if it’s not done right within a year, Mercer makes it right.
Every technician who shows up at a West Hollywood door is background-checked, identity-verified, and in a clean, marked uniform with a photo ID badge. That’s the Threshold Standard, and each independently owned Mercer location is contractually held to it under the Threshold Verified framework. Grant Whitlock and our Los Angeles office coordinate scheduling so crews arrive from nearby, not across the county.
We answer the phone with a live person, 24/7. When a flat roof starts leaking during a winter rain at 11 p.m. in the Norma Triangle, the person who picks up can actually help. Not a voicemail.
Styles & brands we work with
Roof Flashing Installation in West Hollywood
Roof Flashing Installation in West Hollywood is the most common leak-prevention job we do on flat and low-slope roofs, where metal flashing around parapets, chimneys, and rooftop HVAC units takes years of direct sun and fails at the seams. On a 1920s low-rise apartment building off Santa Monica Boulevard, our crew re-roofed a built-up roof with new TPO after stripping the old decking to replace rotted spots around rooftop HVAC penetrations. We scheduled the tear-off to finish before 6 p.m. to comply with West Hollywood’s noise ordinance, and staged the dumpster in the alley with a permit, keeping the narrow street clear for neighbors.
Most West Hollywood flashing work runs $850 – $2,400 for replacement around typical penetrations. Full flashing replacement on a flat commercial roof with multiple HVAC curbs can push $4,000 – $7,000. We write the price before we touch the roof.
Where flashing fails first
Long dry summers here bake the sealant and gaskets at flashing joints. Then the first heavy winter rain finds every weak point at once. We inspect the flashing at every penetration when we quote a West Hollywood reroof, because that’s where water enters first on a flat roof and damages the interior before anyone sees a stain.
Flashing that matches the roof
We flash with materials matched to the roofing system: TPO-coated metal for white membrane roofs, galvanized or copper for built-up roofs, and painted metal to blend with the existing parapet color. On roofs visible from Sunset Strip, that color match is not optional.
TPO Roofing Installation in West Hollywood
TPO Roofing Installation in West Hollywood is the standard for flat and low-slope commercial and multifamily roofs, where white reflective membrane cuts rooftop heat and resists UV degradation better than older built-up systems. A typical West Hollywood apartment building TPO installation runs $18,000 – $38,000. Detached flat-roof homes with accessory dwelling units run $12,000 – $22,000.
We install TPO from GAF and Boral, heat-welded at the seams so the membrane is one continuous waterproof layer. The real skill is in the details: flashing at parapets, sealing around HVAC curbs, and getting the slope right so water doesn’t pond and break down the membrane early.
Penetrations dictate the quote
West Hollywood’s flat-roof buildings carry rooftop HVAC units, vents, skylights, and utility racks. Every penetration is a potential leak, and every one needs flashing, sealing, and inspection. We measure roofs in squares and count penetrations during the estimate, so the written price accounts for what the roof actually has, not a generic square-foot number.
Reflectivity and design review
In parts of West Hollywood, especially the Norma Triangle and anything visible from Sunset Strip, the city’s design review process can object to a bright-white TPO patch on a roof that previously read as gray or tan. We spec TPO color and reflectivity to match what the building had before unless the owner wants and gets approval for a change. It’s not just about waterproofing; it’s about not triggering a complaint from neighbors who see the roof every day.
Trusted Brands We Service in West Hollywood
We install and repair roofs using manufacturer-recognized shingle and membrane brands, including GAF, Atlas, and Tamko for pitched roofs and Boral for clay tile and specialty profiles. We stock common flashing, sealant, and membrane materials for West Hollywood’s flat-roof stock locally, which means faster turnaround when a repair can’t wait for a distributor order. If your building has a specific manufacturer warranty, we’ll match the specified materials and install to the manufacturer’s requirements so the warranty stays intact.
Common Roof Installation Problems We See in West Hollywood Homes
- Sun-degraded membrane at rooftop HVAC penetrations. West Hollywood’s intense summers bake the membrane and sealant around HVAC curbs until they crack. The first winter rain finds the crack, and by the time water shows on the ceiling, the decking underneath is already soft.
- Wrong nailing pattern on low-slope shingle reroofs. Some roofs over spare bedrooms or additions in West Hollywood are too low-slope for standard shingle nailing, and high wind on a stormy day blows shingles off. We verify slope and match nailing patterns to the 130 mph wind rating the city requires.
- Bright-white TPO patch visible from Sunset Strip. A contractor puts a small white patch on a gray modified-bitumen roof, and the neighbors call the city. We match color and reflectivity on any patch or section visible from the street or hillside.
- Staging on a narrow lot with no room for a dumpster. Many West Hollywood buildings have no driveway and a curb-to-curb street. We pull the alley staging permit, put the dumpster in the alley where allowed, and schedule deliveries the day of the tear-off so the street stays passable.
See the difference
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AfterPricing for Roof Installation in West Hollywood, CA
A full shingle reroof on a single-family West Hollywood home typically runs $11,500 – $22,000. Clay tile replacement runs $28,000 – $45,000. Flat-roof TPO on a multifamily or commercial building runs $18,000 – $38,000. Flashing-only work runs $850 – $2,400 when it does not require a full reroof.
What moves the price: number of penetrations, decking condition, access for staging, whether the building is visible from Sunset Strip and needs design review sign-off, and whether shared walls require party-wall notice before work starts. We quote by the square and by the penetration, not by square footage alone. Call (213) 521-8272 for a written estimate that matches what the roof actually has.
We Also Serve Cities Near West Hollywood
Our crews serve West Hollywood and the nearby communities of North Hollywood, Burbank, Venice, and Los Angeles. If you’re in one of those cities and need a roofer who understands dense, design-conscious neighborhoods, Roof Installation is our core service, and our West Hollywood work gives us the local knowledge to quote your job right the first time.
Serving West Hollywood, CA - Our Local Coverage Area
We’re based in the West Hollywood area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Installation in West Hollywood
West Hollywood restricts construction noise to specific daytime hours, and on most residential streets we finish tear-off work before 6 p.m. That means a small-lot tear-off may take a half-day longer than it would in a city without those rules, and we schedule the loudest work earlier in the day. We plan the schedule around the ordinance when we quote, so the city doesn’t shut the job down mid-tear. Call (213) 521-8272 for a quote that accounts for your street’s rules.
Yes, if your building shares a wall with an adjacent structure, West Hollywood may require written notice to the neighboring owner before work begins on shared parapets, flashing, or any portion of the roof touching the shared wall. We prepare that notice as part of the permit package, and we coordinate with the neighbor so the job doesn’t stall on a technicality. Estimates are free, and we handle the paperwork.
Possibly. If your roof is visible from the Sunset Strip or surrounding hills, West Hollywood’s design review often requires the new roof to match the existing color and reflectivity, especially in the Norma Triangle. We spec TPO to match what the building had before and photograph the roof before tear-off, so the replacement looks right and clears review without a second filing. Call (213) 521-8272 and we’ll check your visibility before quoting.
We strip the old flashing and sealant from every HVAC curb, inspect the decking below for rot, replace any soft wood, then flash each penetration with material matched to the new membrane. On a 1920s low-rise off Santa Monica Boulevard, that process caught rotted decking around two HVAC curbs that would have leaked within the first winter. Every flashing job gets a written guarantee, with a free second visit if it fails. Call (213) 521-8272 for a line-item quote.
Yes, and that’s exactly how we quote. We measure by the square and count every penetration, parapet, curb, and skylight before we write the price. A generic square-foot quote misses the flashing labor that drives real West Hollywood roof costs. Estimates are free, and the price we write is the price you pay. Call (213) 521-8272 to schedule a walkthrough.
Get a Written Estimate for Roof Installation in West Hollywood
If you’re pricing a new roof in West Hollywood, call (213) 521-8272. Grant Whitlock and the Mercer Roofing Co Los Angeles team will walk your roof, count the penetrations, check the staging situation, and write a fixed price before any work starts. You’ll know who’s coming to your door, what the roof will cost, and what the guarantee covers, in writing. No surprises, no strangers, no pressure.
Written by Grant Whitlock, Owner at Mercer Roofing Co Los Angeles, serving West Hollywood since 2000.