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 Home Remodeling Across Westminster
Home remodeling in Westminster, CA typically runs $9,000 to $130,000 depending on scope, with kitchens landing at $14,000 – $45,000 and full home remodels climbing from there. We’re Square One Builders, and our Home Remodeling team has spent years working the tight postwar lots and Bolsa Avenue commercial spines that make this city different from any neighbor on the Orange County map. Call (877) 688-9930 for a free estimate and a straight answer about your project, whether it’s a second-story pop-top near Little Saigon or a ranch home rework off Westminster Boulevard. We know the zoning office here, we know the housing stock, and we know what Westminster homeowners actually run into once demolition starts.

Why Square One Builders Is Westminster’s Preferred Home Remodeling Company
Most remodelers in Westminster specialize in one trade. Roofing companies roof. Cabinet shops do cabinets. Kitchen guys stay in the kitchen. Square One Builders is a full-scope general contractor, which means one contract covers structural work, roofing, windows, plumbing fixtures, cabinetry, countertops, hardscaping, and even a detached ADU if that’s where the project goes. The homeowner never juggles three separate crews and never gets stuck in the finger-pointing loop when a trade falls behind. One contractor, every system, from the ground up.
Brent Calloway leads our team, and he’s the first one walking your lot with a tape measure, checking what’s behind the stucco before anyone quotes the finish work. That matters in Westminster specifically, because nothing here is a clean tear-out. The 1950s and ’60s tract homes off Bolsa hide old drainage, undersized electrical panels, and subfloor rot that a less careful estimate glosses over. Ours doesn’t. If it’s in the walls, we price it into the written allowance schedule before you sign, not as a change order after framing starts.
Westminster homeowners have told us the same thing for years: they want straight numbers, a clear scope, and a contractor who answers the phone when the inspector flags something. That’s the reputation we’ve built here. We don’t advertise “trusted professionals” because that means nothing. We show up with a survey, a plan, and a line-item quote.
Styles & brands we work with







Luxury Home Remodeling in Westminster
Luxury Home Remodeling in Westminster means something different than it does in Newport Beach or Huntington Beach. Here, luxury often shows up as a multigenerational ranch expanded off Bolsa with a chef-grade kitchen, a primary suite addition, and finish materials sourced from brands like Cambria, Kohler, and James Hardie. The job typically starts at $45,000 and climbs past $130,000 when square footage, structural work, and high-end fixtures stack together on a tight postwar lot.
When a Westminster homeowner needs this scale of work, it’s usually because the house has been in the family for decades and the next generation is moving in, or because the owner finally wants the kitchen they’ve deferred for ten years. We spec the right material for the project, which means premium where it earns it: Cambria quartz on the island, a 48-inch hood with real ventilation, custom cabinetry from KraftMaid or Wellborn, and plumbing from Kohler or Grohe where the fixture gets touched every day.
Multigenerational Additions and Pop-Top Rebuilds
Timeless finishes only matter if the structure beneath them is sound and the layout actually fits the family living in it. On Westminster’s 60-year-old tract homes, that often means removing a wall to open the living space, rebuilding the roof over a new second story, and reworking the electrical service for the kitchen load. We handle all of it under one contract, including the permit path with the city before framing starts.
Interior Systems With Curated Brands
Countertop and fixture selection becomes a conversation about how the family cooks and cleans, not a showroom upsell. Cambria versus Silestone, Kohler versus Moen: each tier has a real tradeoff, and we explain which one earns its price in a Westminster kitchen that gets used by three generations daily. We don’t push the most expensive option. We push the right one for the way you live.
Full Home Remodel in Westminster
A Full Home Remodel in Westminster is a ground-up repositioning of the whole house: new kitchen, both bathrooms, flooring throughout, windows, doors, roofing if the structure calls for it, and often an addition or a garage conversion to get the square footage the family needs. This is the project where the $45,000 – $130,000 addition range and a $14,000 – $45,000 kitchen combine into a single managed scope, and the budget genuinely needs a strong general contractor running it as one job instead of five.
Westminster homeowners pursue a full remodel for one main reason: the house works structurally but no longer fits the household. Maybe an adult child has returned with a family. Maybe aging parents moved in. The postwar one-story ranch on a small lot gets pushed to its lot-coverage limit, and the solution becomes a pop-top second story or a rear addition that eats up most of the yard. That’s what we plan for, with survey and zoning clearance sequenced before framing.
Structural Scope Without Surprise Change Orders
The ugly truth in Westminster is that 60-year-old load-bearing walls and flat roofs hide things. We write allowances for subfloor rot, old drainage, and electrical panel upgrades into the quote before you sign, so the final number doesn’t drift. Your remodel, fully managed, with the contract written to match what’s actually inside your walls.

Whole-System Coordination
Roofing, windows, siding, plumbing, electrical, cabinets, countertops, pavers: it all moves through one schedule and one accountable team. Not five phone numbers and five warranties to chase. For a full remodel on a small Westminster lot, that coordination is the difference between a six-month project and a fifteen-month stall.
Trusted Brands We Service in Westminster
We stock and install materials from GAF, CertainTeed, and Owens Corning roofing, James Hardie siding, Cambria and Silestone countertops, and KraftMaid cabinetry, among a roster of 50-plus nationally recognized brands across every home system. For Westminster customers, that means no waiting on a specialty supplier that doesn’t deliver here without a surcharge. We keep local inventory access for the common lines, and we know which GAF or CertainTeed shingle spec handles Santa Ana wind conditions better than the bargain alternative. One contractor, every system, with brands picked because they’ll hold up on this particular block in Westminster, not because a distributor offered a rebate.
See the difference
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After
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AfterCommon Home Remodeling Problems We See in Westminster Homes
- Lot-coverage and setback collisions. On the tight postwar lots blocks off Bolsa, a rear addition or second-story pop-top routinely runs into setback limits before framing is even a question. We pull survey and zoning clearance with the city first, because discovering the footprint doesn’t fit after the client has mentally committed to a plan turns a remodel into a dispute.
- Old flat roofs and Santa Ana wind damage. The coastal-inland climate means dry, hot gusts in the fall that lift aging roof materials and drive dust into every opening, followed by winter rain that exposes drainage failures on 60-year-old homes. Roof condition gets assessed at the top of every full remodel, not as an afterthought.
- Bolsa-area commercial and restaurant build-outs mistaken for residential work. Restaurants, groceries, and salons along Bolsa Avenue need large-volume kitchen ventilation, grease interceptors, and heavy-duty electrical, each with its own permit and inspection sign-off. Treating these like a residential kitchen remodel is a costly error, and we scope them separately from the start.
- Multigenerational households living on site during construction. Extended families often stay in the front rooms while the back half of the house is torn apart. That changes sequencing, dust control, and even the inspection schedule, and we plan the phasing around it so the family’s daily life doesn’t stop.
Pricing for Home Remodeling in Westminster, CA
Westminster pricing reflects the age of the housing stock and the density of the lots. A kitchen remodel runs $14,000 – $45,000, a bathroom $9,000 – $28,000, and a full addition $45,000 – $130,000. Cabinets alone land at $4,000 – $13,000 and countertops at $2,000 – $6,500. What moves the number most: whether the project stays inside the existing footprint or pushes against lot coverage, what the walls reveal once demolition starts, and whether the home’s electrical service needs an upgrade for a modern kitchen load. We don’t quote a range and then “discover” the real scope later. Call (877) 688-9930 for a free estimate with a written line-item breakdown, and we’ll walk the lot together before we put a number in front of you.
| Project | Typical Westminster Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
Key Takeaways:
- Westminster’s tight postwar lots make zoning and lot-coverage clearance a bigger cost driver than in neighboring cities.
- Asian-format commercial build-outs along Bolsa carry different permit and inspection costs than residential work.
- Written allowances for hidden rot and old drainage prevent the change order that follows a loose estimate.
We Also Serve Cities Near Westminster
Our Westminster team regularly works in Midway City, Garden Grove, Stanton, and Huntington Beach. But the zoning quirks, housing age, and Bolsa Avenue commercial density we’ve described here are specific to Westminster, and the estimate we give you reflects this city’s actual conditions, not a template from the next town over. If you’re planning a remodel anywhere in central Orange County, call Square One Builders first.
Serving Westminster, CA — Our Local Coverage Area
We’re based in the Westminster 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 Home Remodeling in Westminster
A kitchen remodel in Westminster typically runs $14,000 – $45,000, and a bathroom $9,000 – $28,000. The final number depends on whether the project stays inside the existing footprint, what condition the subfloor and plumbing are in, and whether the electrical panel needs an upgrade for modern appliances. Call (877) 688-9930 for a free, exact quote with itemized allowances.
We start the planning and estimate phase immediately after the first call, which means a lot walk and a written scope within days, not weeks. Construction start dates depend on city permitting and zoning clearance, which in Westminster often takes longer than the framing itself on tight Bolsa-area lots. We schedule that clearance first so the build starts clean.
We cover the full city, including the neighborhoods around Bolsa Avenue, Westminster Boulevard, and the residential streets near Little Saigon. If you’re in the 92683 or 92655 zip codes and planning a remodel, we’ll come out and walk the lot regardless of how far from the city center you are.
Not materially higher for the same scope of work, but Westminster’s postwar housing stock and tight lots often add survey, zoning, and hidden-condition costs that Fountain Valley or Huntington Beach tract homes don’t carry. The labor and material rates are comparable; the planning and structural work is where Westminster dollars go differently.
Yes, we pull every permit and manage every inspection, including bilingual sign-off when the homeowner or family member prefers to review documents in Vietnamese. We don’t ask you to navigate the city’s planning department alone. That’s part of the single-contract accountability we bring to every remodel in Westminster.
Planning a remodel in Westminster? Call (877) 688-9930 today to schedule a free estimate with Brent Calloway and the Square One Builders team, and get a straight answer about your project before you spend another hour guessing.
Written by Brent Calloway, Owner at Square One Builders, serving Westminster since 2009.