Commercial roofing for Los Angeles apartments, shops and warehouses
Commercial roofs are mostly flat and big, with drains, units and tenants underneath. We plan the work around the building, keep it watertight every night, and choose the system that fits its size, use and budget.
- Answered 24/7
- Work around tenants
- TPO, PVC, foam, mod-bit
Commercial roofing in Los Angeles covers apartment buildings, retail and office roofs and warehouses, most of them flat or low-slope; published LA flat roof ranges run $8-$14 per sq ft for replacement. We repair, coat, re-cover or replace them in phases so tenants and businesses keep running.
Updated September 2026
The roof is one system; the building keeps working under it
A commercial roof carries more than weather: rooftop units, exhaust fans, conduit, dishes and foot traffic from every trade that services them. Leaks there reach tenants, inventory and equipment, so the priority is to stop water first and plan the permanent work second.
We survey the roof, core it, and give the owner or manager a written plan with options: targeted repairs, a restoration coating, a re-cover where code allows, or a full replacement in TPO or PVC. Phasing, access and notice periods are written into the scope.
What a commercial roofing job costs depends on
Published LA flat roof ranges run $8-$14 per sq ft for replacement, less for coatings and repairs. The price moves with:
- Roof size and system
Square footage and the chosen system set the base.
- Condition of the layers
Wet insulation and failed decks add tear-off and repair.
- Rooftop equipment
Curbs, units and conduit all need flashing or temporary lifts.
- Phasing and hours
After-hours or phased work adds labor and setup.
- Access
Cranes, hoists and street-use permits for tall buildings.
The buildings we roof, and how each one is handled
Apartment and multifamily roofs
Duplexes, fourplexes and larger apartment buildings are common across the Eastside, and their flat roofs sit over people's homes. We keep noisy work to daytime hours, give tenants notice, protect walkways and balconies, and tear off only what we can seal the same day, so no unit sleeps under an open roof. We also walk the building with the owner first to flag balconies, skylights and rooftop units that tenants use, so the schedule avoids surprises and access stays safe for everyone living there.
Retail and office buildings
Storefronts and office roofs come with rooftop units, signage and customers below. We work outside business hours where needed, coordinate with the HVAC contractor on unit curbs, and keep entrances clear and safe. Parapets and drains get extra attention, since they decide where water goes on a crowded roof. Rooftop signage mounts and old equipment curbs are common leak points, so we reflash them or remove abandoned ones rather than roofing around them and hoping the old seals hold.
Warehouse and industrial roofs
Large low-slope roofs on warehouses and light industrial buildings are often metal or built-up. Options include foam over metal, coatings on sound roofs and single-ply re-covers. We map the roof, core suspect areas, and phase the work by section so the floor below stays in use. Skylights and smoke vents on large roofs get their own curb and flashing check, and we mark walkway paths so maintenance crews don't wear through the new surface on their way to units.
Brands we install and service
What our commercial roofing scopes include
Owners and managers get the same information every time.
- Roof survey with cores and a photo map
- Written options with phasing and access plans
- Tenant or business notices and work-hour limits
- Coordination with HVAC and other rooftop trades
- Daily watertight close-out of every open section
- LADBS permits and inspections where required
- Close-out photos and product records for the file
Most City of Los Angeles re-roofs go through an LADBS express permit, and jobs that add new sheathing need two inspections, which matters when a large roof is phased over weeks. On the Westside, the Pacific Palisades rebuild has pulled crews and materials in that direction and pushed quoted roofing labor 15-25% above pre-fire levels, so we schedule and price commercial work there with that pressure in mind.
How long a commercial roof takes
Repairs are usually a day or two. Replacements run in phases set by roof size, access and how much of the building can be disrupted at once: a small apartment roof may take a few days, a warehouse several weeks.
You get the schedule in writing before work starts, with updates as each section closes.
How a commercial roofing job runs
Survey and core
We map the roof, core suspect areas and photograph equipment.
Options in writing
Repair, coat, re-cover or replace, with phasing.
Notices and permits
Tenant notices, trades coordinated and permits pulled.
Work in sections
Each section is opened and sealed within the day.
Close-out
Inspection, photos and product records for the file.
Commercial roofing questions
Straight answers to what people ask us most about this job.
Other ways to reach usYes. We give notice, limit noisy hours and never leave a unit under an open roof overnight.
Often, if cores show dry layers. A coating or re-cover can cost far less than a tear-off.
It depends on the existing roof. Metal often takes sprayed polyurethane foam or a coating; built-up roofs may take a single-ply re-cover.
Yes, on retail and office roofs where daytime work would disrupt customers.
Yes. Units are lifted or curbs raised as needed, and flashing follows once the trades finish.
Yes, around the clock. Our leak repair process starts with finding the source.
Yes. We prioritize the worst sections first and plan the rest in phases.
Other flat & low-slope roofing jobs we handle
Cool roof coating for Title 24
Roof Coating.
Mobile home roof leak repair
Mobile Home Roofing.
Torch Down Modified Bitumen Roofing in Los Angeles
Torch Down Modified Bitumen Roofing.
TPO single-ply installation
TPO and PVC Flat Roof Installation.
SPF roof installation
Spray Foam Roofing.
