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Two-story stucco apartment building with a flat roof and rooftop vents in Costa Mesa

Roofing Contractor in Costa Mesa, CA

Costa Mesa grew from a farming community of 16,840 at its 1953 incorporation into a city of 111,918, and only 40% of homes are owner-occupied, so a roofing contractor in Costa Mesa, CA often works for landlords, managers and business owners. Flat and low-slope roofs are common near South Coast Plaza.

  • ★ 4.9 on Google · 69 reviews
  • Same-day or next-day bookings
  • Based in Van Nuys, CA

Van Nuys is 63 miles away, about 95 minutes by our estimate.

On this page
  1. Who owns the roof in Costa Mesa
  2. Flat and low-slope roofs near the South Coast Plaza district
  3. Fairview, the fairgrounds and Costa Mesa's rain calendar
  4. Marine air a mile from the Pacific
  5. Costa Mesa permits and a long trip from the Valley
  6. Common questions

Who owns the roof in Costa Mesa

Costa Mesa grew from a farming community of 16,840 at its 1953 incorporation into a city of more than 110,000. The Census puts the median building at 1972 and says 40% of homes are owner-occupied, so a big share of the roofs here belong to landlords, associations and business owners.

That changes how we scope a job. For multi-unit or commercial work we ask:

  • How many buildings, and how old is the oldest roof surface?
  • Is there rooftop equipment, and who services it?
  • Who gets access, and when are tenants home?
  • Who signs the contract and receives the permit paperwork?
Flat apartment roof with parapet walls and ponded water near a Costa Mesa stucco building

Flat and low-slope roofs near the South Coast Plaza district

The city's economy rests on retail, commerce and light manufacturing, and those buildings usually sit under low-slope roofs. Water leaves a low-slope roof slowly, so seams, drains and rooftop penetrations carry the load. We check for ponding, split seams, loose flashing at parapet walls and equipment curbs.

Fairview, the fairgrounds and Costa Mesa's rain calendar

Fairview, settled in the 1880s near Harbor Boulevard and Adams Avenue, came before the city, and the Orange County Fair brings crowds to the fairgrounds every July. The Interstate 405 corridor and the end of SR-55 run through town, with John Wayne Airport on its edge. About 61% of occupied homes are rented, and the 2020 census counted 44,047 housing units, so a lot of these roofs sit above apartments.

Rain is thin and seasonal. The city averages about 11.18 inches a year, mostly in winter, with January and February near 2.6 inches each and summer close to none. Months of dry heat age seams, then one storm shows every weak point. Mesa Water District and the Costa Mesa Sanitary District serve residents.

Marine air a mile from the Pacific

Costa Mesa's south end is a mile from the ocean. Mild, damp coastal air works on metal edges, fasteners and sealants over the years, and the city is semi-arid, with rain mostly in winter. Coating or patching a membrane over standing moisture traps trouble, so we find the leak before covering it.

Weathered membrane seams on a low-slope business park roof in Costa Mesa

Costa Mesa permits and a long trip from the Valley

Costa Mesa sits in Orange County but issues its own building permits, and the contract should say who applies for them. The city's residential re-roof standard encourages single-family owners to use its Insta-Permit online service, and it says solar work, new skylights or structural repairs beyond replacing sheathing need a separate permit. Our drive is about 95 minutes, so each trip is booked in advance, with photos requested first. Our flat roof repair page covers low-slope leaks.

What customers say

“The crew’s workmanship looked top-notch, and they kept me updated by sending drone photos of the roof work as it happened, which was really helpful since I wasn’t about to climb up there myself!”
Kyle K. · Google review, 9 months ago as of November 2026
“During the new roof installation, a small leak showed up after some seasonal rain, and Frederick and the crew responded right away, even on a Sunday morning, to fix it fast.”
Esther S. · Google review, 4 months ago as of November 2026

4.9 on Google · 69 reviews as of November 2026. Read all reviews

Roofing questions from Costa Mesa

Do you work with Costa Mesa property managers on multi-unit roofs?

Yes. Multi-unit and commercial roofs are part of our flat and commercial work, and in a city where only 40% of homes are owner-occupied, the person approving the job is often not the person living under it. We send photos and measurements before quoting, and the proposal names the scope in writing.

Why do flat roofs in Costa Mesa pond water?

A flat roof is rarely perfectly flat. Settling, added rooftop equipment and old patches can leave low spots where water sits after rain, even in a drier coastal climate. Standing water ages seams faster, so we check slope and drains, and recommend fixing the drainage before choosing a coating.

How fast can you reach a leaking Costa Mesa building?

We cannot promise speed from Van Nuys, about 95 minutes away. For an active leak, tenants and managers should move belongings, catch water, and cover the damaged area first where you can do so safely. Contact us early so the trip can be planned, and then we will set the earliest visit we can.

Roof trouble in Costa Mesa?

Call us with your address and what you are seeing.

Clear Shield Roofers
14526 Sherman Cir, Van Nuys, CA 91405
(209) 563-1278
Call (209) 563-1278
Call (209) 563-1278