Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Costa Mesa
Finding a general contractor in Costa Mesa who actually shows up, pulls permits, and manages every trade under one contract shouldn’t feel like a gamble. Ashbury Contractors works across all three Costa Mesa ZIP codes, 92626, 92627, and 92628, running remodels, additions, and full-property upgrades with one accountable point of contact. Noel Quintero leads every project from first walkthrough to final inspection sign-off. If you’re pricing a kitchen, bath, addition, or whole-home rework, call (833) 467-4091 for a free estimate. We specify the product before we quote the price, so you’ll know exactly what you’re paying for.
Why Ashbury Contractors Is Costa Mesa’s Preferred General Contractor Company
Costa Mesa homeowners deal with a specific set of conditions: post-war ranch homes on tight lots, salt-laden air off the Pacific, and permit requirements that inland contractors rarely contend with. We’ve worked those conditions on dozens of jobs across the 92626 and 92627 neighborhoods. Our General Contractor team knows which façades on a 1950s stucco ranch need full tear-off versus patch-and-coat, and we know the rear-alley access problem in older Eastside streets before we ever spec a dumpster. That’s local knowledge you can’t fake.
Costa Mesa customers consistently point to two things in their feedback: we show up when we say we will, and we don’t hand work off to subcontractors who disappear. One contract, one warranty conversation, one person accountable. Noel Quintero walks every Costa Mesa job personally before we quote it. You’re not getting a salesperson from a call center. You’re getting the contractor who will be standing in your driveway during the framing inspection.
Styles & brands we work with







Construction Company in Costa Mesa
A construction company in Costa Mesa handles what most people think of as the heavy work: home additions, garage conversions, ADU builds, and structural renovations. On Costa Mesa’s post-war lots, that work almost always means working around constraints that don’t exist in newer Orange County developments. A home addition in Costa Mesa runs $45,000 to $130,000, while ADU construction typically lands between $90,000 and $220,000. The range depends on whether we’re adding up on a 6,000-square-foot parcel in 92626 or building into a rear-alley lot in 92627 where access dictates equipment size.
Additions on Tight Post-War Lots
Costa Mesa’s 1950s ranch homes sit on parcels that were never sized for a two-story master suite. A compliant addition here means shear-wall upgrades, load-bearing adjustments, and wind-load strapping that the permit requires. Cheap quotes skip those structural items. We include them in the first line-item quote, because a failed inspection costs more than doing it right the first time.
ADU and Prefab Structure Builds
We install ADUs and prefab structures through partnerships with manufacturers including Abodu and Dvele, and we work with Cover on panelized builds when site conditions call for it. That’s a capability most Costa Mesa remodelers don’t have. Instead of coordinating a separate ADU specialist, you deal with one contractor from foundation to final paint.
Remodeling Contractor in Costa Mesa
A remodeling contractor in Costa Mesa handles the interior scope: kitchens, bathrooms, whole-home renovations, and the finish work that transforms an old ranch into a modern property. Kitchen remodels in Costa Mesa run $14,000 to $45,000 depending on cabinetry line, countertop material, and whether we’re moving plumbing or opening walls. Bathroom remodels land between $9,000 and $28,000. Those are real Costa Mesa market numbers, not national averages.
Kitchen and Bath Remodels
We specify material before we price, which means you’ll see Cambria quartz or a Caesarstone slab named in the quote, not “premium countertops” as a placeholder. Cabinet installation runs $4,000 to $13,000, countertop installation $2,000 to $6,500, and a kitchen island $3,000 to $10,000. On the bath side, a walk-in shower installation runs $4,500 to $12,000, and a tub-to-shower conversion $3,500 to $10,000. Every number is a fixed range from our Costa Mesa pricing sheets, not a “starting at” teaser.
Roofing and Exterior Scope
Costa Mesa’s coastal moisture means exterior work can’t be an afterthought. Roof replacement runs $8,000 to $20,000, metal roof installation $15,000 to $40,000, and tile roof repair $600 to $2,500. We specify GAF or CertainTeed roofing systems with corrosion-resistant flashing details, because the daily marine dew cycle in Costa Mesa eats standard galvanized flashing faster than inland climates ever will.
Trusted Brands We Service in Costa Mesa
Ashbury Contractors partners with 50-plus product lines across every trade, and Costa Mesa customers get the same access as anyone else. We specify countertops from Cambria and Caesarstone, fixtures from Kohler and Grohe, roofing from GAF and CertainTeed, and hardscaping from Belgard and Techo-Bloc. For exterior concrete work and masonry, we stock Sakrete products locally, which means shorter turnaround on small pours for Costa Mesa driveways, patios, and walkways. When we say we can get a material, we mean we’ve already ordered it from that manufacturer before.
See the difference
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AfterCommon General Contractor Problems We See in Costa Mesa Homes
- Corroded exterior fasteners and failed flashing. Costa Mesa’s salt-laden air and daily dew cycles accelerate corrosion on standard galvanized components. We specify stainless steel or hot-dip galvanized fasteners and flashing on every exterior assembly, which a standard inland quote doesn’t include. Skipping this detail leads to water intrusion within a few years.
- Under-scoped structural work on two-story additions. Post-war ranches in 92626 and 92627 were never engineered for a second floor. Missing shear-wall upgrades, load-bearing adjustments, and wind-load strapping fails inspection and stalls the draw schedule. We include those items in the first quote, not as a change order later.
- Permit handling treated as paperwork instead of inspection checkpoints. Costa Mesa’s permitting process includes third-party inspection sign-offs at framing, shear, and final stages. A contractor who treats the permit as a form to file rather than a compliance path will fail those sign-offs. We schedule inspections as project milestones and don’t close walls until the inspector signs off.
- Rear-alley access problems on 92627 lots. The original rear alleys in older Eastside Costa Mesa are the main construction access point. A full-size truck or standard excavator doesn’t fit. Contractors who don’t plan for half-loaded trucks and compact equipment crush fences, damage driveways, and fall behind schedule.
Pricing for General Contractor in Costa Mesa, CA
Costa Mesa pricing reflects coastal conditions and post-war lot constraints. Here are the line-item ranges we quote for major scopes:
| Project | Costa Mesa Price Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
What moves a Costa Mesa quote: whether corrosion-resistant exterior assemblies are specified, whether the lot requires rear-alley access logistics, and whether the structural scope for a second story is included up front. A cheap quote omits those line items. Ours includes them. Call (833) 467-4091 to schedule a free estimate with a written, line-item quote. You’ll see exactly what’s in it.
We Also Serve Cities Near Costa Mesa
Ashbury Contractors works throughout coastal and central Orange County, including Costa Mesa and the surrounding areas. Our coverage extends to Newport Beach, Fountain Valley, Huntington Beach, and San Joaquin Hills. If you’re in one of those cities and pricing a remodel or addition, the same team, the same pricing sheets, and the same single-contractor accountability apply.
Serving Costa Mesa, CA — Our Local Coverage Area
We’re based in the Costa Mesa 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 General Contractor in Costa Mesa
Costa Mesa falls under the California Building Code’s wind exposure requirements for coastal plain areas, which means a new addition must meet the wind-load rating specified in the city’s current adopted code with properly installed straps, anchors, and shear panels. We install and document every strap and fastener location, then have the third-party inspector verify the nailing pattern and strap schedule before walls are closed. Call (833) 467-4091 to get a compliance-focused quote for your addition.
We plan the entire job around the alley: half-loaded trucks, compact 6,000-pound excavators, and staged material drops that don’t block the neighbor’s access. On a 1950s ranch in 92627, our crew demolished a rear addition and rebuilt it as a two-story master suite using exactly that strategy, and we kept the neighbor’s fence untouched. If your lot only has rear-alley access, tell us on the first call so we scope it correctly.
A two-story addition on a Costa Mesa post-war lot requires structural plans stamped by a licensed engineer, a building permit, and third-party inspection sign-offs at the shear, framing, and final stages. The inspector verifies wind-load straps, shear nailing, and load path continuity before we can close walls. We pull the permits, schedule every inspection, and don’t move forward until each sign-off is documented. For an exact outline of the steps on your property, call (833) 467-4091.
Documented compliance with Costa Mesa’s wind-load and structural requirements gives your insurer verifiable evidence that the work met code, which can support a lower premium and makes any future claim easier to process. If the work was never inspected or the compliance paperwork doesn’t exist, an insurer may question the claim. We provide a full inspection record with photos and sign-off documentation at project close.
A compliant Costa Mesa quote includes corrosion-resistant exterior fasteners and flashing, shear-wall and wind-load strapping for second-story work, rear-alley access logistics, and permit and inspection fees. A cheap quote omits those items and adds them as change orders after the contract is signed. Ours lists them line by line from the first estimate, so you’re comparing real numbers. Call (833) 467-4091 for a free written quote and see the difference on paper.
Written by Noel Quintero, Owner at Ashbury Contractors, serving Costa Mesa and Orange County with full-scope residential construction.