Orange County service area
General Contractor in Costa Mesa, CA
Costa Mesa is the least coastal of the coastal cities and the most interesting to remodel because of it. The Westside carries the Freedom Homes, single story cottages built around 1954 on former airfield land and sitting on lots deep enough to have turned this into one of the county's busiest accessory dwelling unit markets. Eastside runs older, denser and more expensive, with parcels near Seventeenth Street where duplexes and rear units are already common. Mesa Verde and Mesa del Mar hold 1960s ranch homes with post and beam ceilings, original slabs and roofs that were never designed for the mechanical loads people put on them now. College Park and Halecrest date to the mid 1950s planned tract wave. Very little of this housing carries an association, which makes ambitious projects easier to get approved here than almost anywhere nearby.
About Costa Mesa
- Population:
- Around 110,000 residents in a compact sixteen square miles just inland of the harbor
- Incorporated:
- 1953
- ZIP codes:
- 92626, 92627, 92628
- Freeway access:
- I-405, SR-55 Costa Mesa Freeway, SR-73 San Joaquin Hills Toll Road, SR-1 Pacific Coast Highway
Permits in Costa Mesa
- Department
- City of Costa Mesa Economic and Development Services, Building Safety Division
- Address
- 77 Fair Drive, Costa Mesa, CA 92626
- Phone
- (714) 754-5273
- Typical plan check
- The city encourages electronic submittal for most residential project types through its online permitting portal, with an in person counter at City Hall for intake questions. Plan check appointments are available by phone or email. City Hall observes alternating Friday closures, which is worth building into a submittal calendar so a resubmittal does not sit over a long weekend.
Building permit fees are valuation driven, with separate plumbing, mechanical and electrical permits and school district fees on new conditioned square footage. Accessory dwelling units under state size thresholds are exempt from impact fees, which is a meaningful share of the cost on a detached unit. Confirm the current adopted fee schedule with Building Safety before committing to a number.
What remodeling in Costa Mesa actually involves
The work in Costa Mesa clusters around a few repeating problems, and we have solved each of them many times. Deep rear yards plus flexible state law make detached second units the highest value move on a Westside lot, but the limiting factors are almost never the code: they are the sewer lateral, the panel capacity and where the existing driveway lands. Mesa Verde and Mesa del Mar post and beam ceilings look beautiful and complicate everything above the plate line, since there is no attic to route ducts, wiring or recessed lighting through, so we plan mechanical routing before we plan finishes. Original slabs mean plumbing changes involve saw cutting rather than crawling. Second story additions on 1950s framing need real foundation review. None of that is exotic, but all of it belongs in the estimate rather than in a change order.
Housing stock
Costa Mesa is overwhelmingly a postwar city: Freedom Homes went up on former Santa Ana Army Air Base land around 1954 as modest single story cottages on generous lots, and College Park and Halecrest followed as mid 1950s planned tracts. Mesa Verde and Mesa del Mar added 1960s ranch homes, many with post and beam ceilings and original slab foundations.
- Postwar Minimal Traditional
- Mid-century Modern
- California Ranch
- Contemporary Farmhouse
Seismic and structural notes
Costa Mesa sits within the broader Newport-Inglewood structural trend that runs up this part of the coast, and like the rest of Orange County it is in Seismic Design Category D. The practical effect on remodeling is ordinary and manageable: engineered shear walls and hold downs on second story additions, proper anchorage for tall cabinetry, and stamped calculations whenever a bearing wall comes out.
Homeowners associations
Most of the older tract neighborhoods here have no homeowners association at all, which is a quiet advantage: outside of the newer condominium and townhome developments, design decisions answer to the zoning code and the building department rather than an architectural committee.
Neighborhoods we work in
- Eastside Costa Mesa
- Mesa Verde
- Mesa del Mar
- College Park
- Halecrest
- Freedom Homes
- Westside
- South Coast Metro
Local landmarks
South Coast Plaza, Segerstrom Center for the Arts, Orange Coast College, Fairview Park, OC Fair and Event Center.
Services
Services we provide in Costa Mesa
Chosen for the housing stock and conditions common in Costa Mesa. We provide our full range of services here.
Accessory Dwelling Units (ADUs)
Detached, attached and junior ADUs, garage conversions, design and permitting.
Home Additions
Room additions, second stories, master suites, in-law suites and conversions.
Kitchen Remodeling
Full kitchen remodels, custom cabinetry, countertops and open concept conversions.
Interior Remodeling
Open floor plans, built-ins, millwork, lighting and interior finishes.
Flooring Installation
Hardwood, engineered, luxury vinyl plank, tile, refinishing and heated floors.
Seismic Retrofits and Structural Work
Foundation bolting, cripple wall bracing, shear walls and soft-story retrofits.
Scope
What's Included on every Costa Mesa project
The same standards apply on every job we take in Costa Mesa, regardless of size.
- Local permit handling: We submit to City of Costa Mesa Economic and Development Services, Building Safety Division and manage plan check corrections through final inspection.
- Written scope before work: An itemized scope of work and schedule you approve before anything is demolished.
- Weekly photo updates: A written progress report with photos every week, so you always know where the project stands.
- Signed change orders: Nothing is added to your invoice without a change order you approved in writing first.
- Daily site cleanup: Floors protected, dust contained, and the site left orderly at the end of every working day.
- Punch list sign off: A formal walkthrough and written punch list completed before we request final payment.
How it works
Our Process
How a project in Costa Mesa runs from first call to final inspection.
Free in-home consultation
about 1 hourWe walk the space with you, measure, look at existing conditions, and talk through what is realistic for your budget and your house.
Written scope and proposal
3 to 7 daysAn itemized scope with line item pricing, stated allowances, and a schedule. You know what you are buying before you sign anything.
Design, permitting and plan check
varies by cityWe prepare drawings, submit to your building department, respond to plan check corrections, and keep you updated at each round.
Construction
per the scheduleSequenced trades, daily cleanup, dust containment, and a written progress update with photos every week without you asking.
Walkthrough and punch list
1 to 2 weeksWe walk the finished work together, write down every outstanding item, and complete them before requesting final payment.
Closeout, warranty and follow up
ongoingFinal inspection sign off, warranty documentation, plus 30 day and 11 month follow up check ins.
Local answers
Costa Mesa remodeling questions
Is Costa Mesa in the coastal zone?
Only a small part of it. Most of the city sits well inland of the Coastal Zone boundary, but a narrow area near the Santa Ana River and the Talbert lowlands falls inside it. Costa Mesa has no certified Local Coastal Program, so the Coastal Commission is the permit authority there.
Why is Costa Mesa such a popular place to build an ADU?
Lot geometry. The Freedom Homes and similar 1950s tracts were built with small houses on deep lots, which leaves genuine rear yard space that newer tracts do not have. Alley access in parts of the Westside also makes a detached unit easier to service and easier to make feel independent.
What makes Mesa Verde post and beam homes harder to remodel?
There is no attic. Exposed beam ceilings mean ductwork, wiring, recessed cans and range hood venting have no hidden path, so every mechanical run has to be designed around the structure or routed below the slab. It is entirely workable, but it must be planned before demolition rather than after.
Do I need a permit to remove a wall in a Costa Mesa ranch home?
If the wall carries load or contains plumbing, electrical or mechanical, yes. Bearing wall removal requires engineered calculations and inspection of the new beam and its posts down to a proper footing. On slab homes that footing work usually means saw cutting, which is why the scope grows quickly.
How does Costa Mesa handle plan check submittals?
The city pushes most residential project types to its online permitting portal, with the Building Safety counter at 77 Fair Drive available for intake questions and plan check appointments. City Hall closes on alternating Fridays, so we time resubmittals around that to avoid losing days on the calendar.
Are Costa Mesa homes subject to HOA architectural review?
Usually not. Outside of newer condominium and townhome projects, the older single family tracts here were built without associations, so the zoning code and the building department set the rules. That removes an approval layer that adds weeks in many neighboring cities.
Can I add a second story to a Freedom Homes cottage?
Frequently yes, and it is a common alternative to moving. The variables are the existing foundation, the framing of the original single story walls and the setbacks that apply to upper floors. We evaluate the foundation first, because reinforcing it after framing has started is the expensive version of that discovery.
Serving Costa Mesa from our office in Orange
11252 S Espanita St, Orange, CA 92869
Mon to Fri, 8AM to 5PM
Next step
Start your Costa Mesa project
Book a free consultation. We walk the space, talk through what you want, and send a written scope with real numbers. No pressure and no obligation.
Licensed and insured. Written scope before work begins. Weekly progress updates with photos.
What happens next: we reply the same business day, schedule a walkthrough, then send your written proposal.