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
Remodeling Company in Westminster, CA
Home renovation in Westminster usually means reworking a 1950s or 1960s postwar tract home that was never designed for how families live now. Most of these houses are one-story ranch or simple two-story plans on small lots off Bolsa Avenue, and the work we do here is shaped by that: tight setbacks, aging drain lines, and a city planning process that requires real patience. Square One Builders has served Westminster since 2014, and we manage the full scope under one contract so you’re not juggling three separate crews. Call (877) 688-9930 for a free estimate.
Why Westminster Homes Are Different
Westminster’s housing stock is almost entirely postwar tract construction from the 1950s and 1960s. The typical home is a one-story ranch with a shallow roof pitch, a slab foundation, and a lot line that feels closer than it looks on paper. When a homeowner wants a second story or a rear addition, the project runs into the city’s lot-coverage and setback limits quickly, which means survey work and planning clearance often take as much time as the framing itself. We see this constantly on the blocks just north and south of Bolsa Avenue, where families are expanding for multigenerational households but have very little yard to spare.
The climate adds another layer. Westminster sits in that coastal-inland band of Orange County where summers stay mild but Santa Ana winds bring hot, dry gusts that stress old roof sheathing and push dust into every open wall cavity. Winter rain is limited, but when it comes, it finds the flat roofs and aged drainage on 60-year-old homes fast. Little Saigon drives much of the commercial work here too: restaurants, grocery stores, and salons along Bolsa need large-volume kitchen ventilation, grease interceptors, and heavy-duty electrical that typical retail build-outs never account for. Those aren’t standard remodels. They’re Westminster remodels.
Styles & brands we work with
Our Main Westminster Services
Most Westminster homeowners call us for one of two things: a full general-contractor relationship on a major project, or a home remodel that touches multiple systems at once. Both start with the same conversation about scope, budget, and what the house can actually support.
General Contractor in Westminster
As your general contractor, we hold the single contract for everything: structural work, roofing, windows, plumbing, electrical, cabinetry, flooring, and finish work. In Westminster, that matters more than in most cities because additions and second-story pop-tops hit zoning constraints early, and the permit process works better when one team is answering every question the city asks. We’ve managed the planning, the inspections, and the trades on Westminster projects since 2014. Learn more on our General Contractor in Westminster page.
Home Remodeling in Westminster
A Westminster home remodel usually means opening up a closed-off 1960s floor plan, replacing aged systems, and adding space without pushing past the lot line. The homes here were built with smaller kitchens and bathrooms than families need now, and the plumbing and electrical are original in many cases. We handle the full project: demolition, structural changes, new mechanical systems, and all finish work, with brand selection tailored to your budget. See what’s involved on our Home Remodeling in Westminster page.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Home Renovation in Westminster
Home renovation in Westminster typically costs $14,000 to $130,000 depending on whether you’re reworking a single room or adding square footage, and the biggest variable is what your 60-year-old house reveals once the walls are open. We renovate postwar ranches here every month, and the patterns are consistent: cast-iron drain lines that have thinned, electrical panels that were sized for 1960s demand, and framing that needs corrections before any finish work starts. A renovation here is less about cosmetic updates and more about bringing the whole system up to what the house should have been. We spec the right material for your project and handle it from the ground up. If you want to see the full scope of what we do, our Home Renovation page covers the service in detail.
Home Renovation Contractors
Signs you need it
You have multiple rooms that need work, your floor plan fights how your family actually lives, or your home’s plumbing and electrical systems are original and undersized for modern loads.
What it costs in Westminster
A full home renovation in Westminster typically runs $14,000 to $130,000, with the upper end reflecting additions, structural changes, and system replacements on postwar homes.
How we do it
We scope every system first, then demo, frame, rough in mechanicals, inspect, and finish under one contract with our team accountable for each phase.
Home Renovation Companies
Signs you need it
You’ve gotten bids from single-trade companies that leave gaps, or you’re tired of coordinating a roofer, a plumber, and a cabinet installer yourself.
What it costs in Westminster
Expect to pay $14,000 to $45,000 for a major interior renovation in Westminster when you work with one full-scope company instead of managing separate trades.
How we do it
We bring the full renovation under a single contract and schedule, which means one point of accountability and a sequence that doesn’t strand a half-finished room.
What Home Renovation Costs in Westminster
| Item | Typical range in Westminster |
|---|---|
| Small kitchen remodel | $9,000 – $20,000 |
| Bathroom remodel | $9,000 – $28,000 |
| Home addition | $45,000 – $130,000 |
Those numbers reflect the Westminster market specifically. Your final figure depends on what the walls reveal, what materials you select, and how much structural work the city’s setback rules force into the plan. We give you a written line-item quote before any work starts, and we don’t change the price mid-project unless you change the scope.
Can you renovate a Westminster home while we’re living in it?
Yes, in most cases we phase the work so you can stay in the home, but expect noise, dust, and some days without water or power. For full-system replacements or additions, we recommend planning around a temporary vacancy for at least part of the project. Call (877) 688-9930 to talk through your timeline.
How long does a home renovation in Westminster take?
A single-room renovation usually takes 4 to 8 weeks once permits are issued. A whole-home renovation or addition runs 3 to 6 months, and Westminster’s planning and zoning clearance can add several weeks before construction starts. Call (877) 688-9930 for a realistic schedule on your specific project.
Brands We Service in Westminster
We install and service fixtures from American Standard, Toto, Schluter, and Sterling, with parts sourced through our supplier network and kept on schedule for Westminster jobs. If a branded component fails during your renovation, we handle the warranty and replacement without sending you to a specialty shop. Our our brands page shows the full portfolio.
See the difference
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AfterPricing for Remodeling Company in Westminster, CA
| Service | Typical range in Westminster |
|---|---|
| Kitchen remodel | $14,000 – $45,000 |
| Bathroom remodel | $9,000 – $28,000 |
| Countertop installation | $2,000 – $6,500 |
| Backsplash installation | $800 – $2,500 |
| Walk-in shower installation | $4,500 – $12,000 |
| Window replacement | $4,500 – $15,000 |
| Paver patio installation | $3,500 – $11,000 |
| Roof replacement | $8,000 – $20,000 |
| Vinyl fence installation | $3,500 – $9,000 |
| ADU construction | $90,000 – $220,000 |
Prices in Westminster push upward when a project hits setback variances, replaces cast-iron drain lines, or needs structural upgrades on a 60-year-old home. We quote a fixed price before work starts, and you’ll see every line item in writing before you sign anything.
Neighborhoods We Serve in Westminster
We work across Westminster, from the residential streets around Westminster High School to the neighborhoods off Bolsa Avenue, west of the 405, and east toward the Santa Ana border. Each area has the same underlying housing stock but different zoning quirks, and we’re familiar with both the planning counter and the inspector expectations in each.
- Little Saigon / Bolsa Avenue corridor
- Westminster Village area
- Neighborhoods around Sigler Park
- Streets north of Edinger Avenue
- Southeast Westminster near the Santa Ana border
We typically respond to Westminster estimate requests within one business day and schedule on-site walkthroughs based on your availability and the project’s urgency.
Service Area – Cities Near Westminster
Square One Builders serves Westminster and the surrounding Orange County cities, including Midway City, CA, Garden Grove, CA, Stanton, CA, and Huntington Beach, CA. If your project sits on a border lot or you’re planning work in multiple locations, we can scope it under one contract. The permitting reality changes from city to city, and we handle that for you.
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 Remodeling Company in Westminster
Westminster’s planning and building departments process most residential renovation permits within 2 to 6 weeks, but additions, second stories, and any variance request add time. Commercial tenant improvements along Bolsa Avenue can take longer, especially with health department or grease interceptor requirements involved. Call (877) 688-9930 and we’ll tell you what to expect for your specific project.
Yes. Many Westminster neighborhoods have active HOAs, and exterior changes like additions, window replacement, or fence work usually need HOA approval before the city will issue a permit. We prepare the submittal package and track it through both the HOA and city review, so you’re not managing two approval paths alone.
We do. Asian-format restaurants, grocery stores, and salons along Bolsa need specialized build-outs like large-volume exhaust, grease interceptors, and upgraded electrical service that standard retail contractors don’t typically handle. Our team manages both the construction and the inspections for those systems under one contract. Call (877) 688-9930 to schedule a walkthrough of your space.
What happens when you call
- 1A real person answersNo phone trees — talk to a local construction pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Westminster Customers Say
"Framing crew was meticulous and the walls are straight everywhere. Drywall goes on a lot better when the framing is right."
— Renee Novak"He was upfront about a soil issue that added cost early rather than absorbing it and surprising us at the end."
— Sanjay Patel"Every inspection passed first time. The building department clearly knows him and that made the whole process easier."
— Christine Yang