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 Anaheim
Hiring a general contractor in Anaheim means finding a team that can manage every system of your remodel without you having to coordinate separate trades. Square One Builders handles kitchens, bathrooms, additions, roofing, windows, and ADUs under one contract, with one accountable team from the first wall probe to the final inspection. We know the flatland slab homes of 92801, the hillside lots of Anaheim Hills, and the code triggers that come with opening walls in both. Call (877) 688-9930 for a free, written estimate.

Why Square One Builders Is Anaheim’s Preferred General Contractor Company
We’ve worked enough Anaheim homes to know what actually happens when a 1950s tract house gets opened up. That experience shapes how we quote, how we write contracts, and how we communicate during the project. Brent Calloway, our owner, built this company around the idea that homeowners deserve a straight answer before demo starts, not after. When we quote a remodel in Anaheim, we walk the site, check access, and account for what the house is likely to be hiding behind the drywall. That’s the difference between a quote that holds and one that quietly doubles by week three.
Our customers in Anaheim consistently mention the same things: we answer the phone, we show up when we say we will, and we don’t disappear when a decision gets complicated. A strong local reputation in Orange County matters to us because the next project usually comes from a neighbor who walked through the last one. We serve all four Anaheim ZIPs we cover, 92801, 92805, 92807, 92808, plus the surrounding cities.
Response time to Anaheim is straightforward: we schedule inspection calls within a few business days, and our team knows the streets, the permit office, and the inspectors. Local knowledge means we know a slab home in 92805 can’t have new circuits fished through a crawlspace, and an Anaheim Hills addition needs a geotechnical report before we draft framing plans.
Styles & brands we work with







Construction Company in Anaheim
Construction Company work in Anaheim spans everything from structural repairs to full-scale additions, and the scope is almost always bigger than it looks from the street. A foundation on expansive clay in the flatlands or a hillside lot above the 91 freeway changes how we engineer footings, drainage, and retaining. Expect a structural or foundation-scope project with Square One Builders to start with site inspection and, where the slope or soil demands it, a geotechnical report before we write a proposal.
Structural Work and Open-Wall Discovery
Homes built in Anaheim in the 1950s and 1960s often hide cloth-insulated wiring, undersized wall framing, and subfloor rot behind surfaces that look fine. We open, we document, and we price any required upgrade as a written change order with line items you approve before work continues. No drywall closes until the city inspector has signed off on what’s inside the wall.
Additions on Slab and Slope
A home addition in Anaheim can run $45,000 to $130,000 depending on square footage, foundation type, and site access. Flatland slab additions in 92801 or 92805 typically involve trenching for new utilities and matching roofline geometry on a tight lot. Hillside additions in 92807 or 92808 add retaining walls, slope stabilization, and engineered foundations that flatland jobs never require.
Remodeling Contractor in Anaheim
Remodeling Contractor work in Anaheim means managing the full interior scope, from demo through finish, with one team accountable for every trade. A kitchen remodel in Anaheim typically runs $14,000 to $45,000, and a bathroom remodel lands between $9,000 and $28,000. The range is wide because a 900-square-foot 1963 tract kitchen with original wiring is a different project than a 2005 Anaheim Hills primary bath with a walk-in shower.
Kitchen and Bath Scope, Managed
We install cabinetry, countertops, plumbing fixtures, and tile as one coordinated sequence, not four separate subcontractor visits. We spec materials from brands like CertainTeed and Owens Corning where roof or exterior systems tie in, and we source cabinet and counter lines that hit your budget without sacrificing durability.
Whole-Home and ADU Remodels
Whole-home remodels and ADU construction in Anaheim often start with a feasibility question: what can this lot and this foundation actually support? We bring our General Contractor team’s full-scope capability to every project, including prefabricated ADU options through our partnerships with manufacturers you won’t find at the typical local remodeler.

Trusted Brands We Service in Anaheim
We work with over 50 vetted material brands across roofing, siding, windows, cabinetry, countertops, plumbing fixtures, and hardscaping, so an Anaheim homeowner can choose between price tiers without switching contractors. CertainTeed and Owens Corning anchor our roofing options. IKO and Atlas give us mid-tier alternatives when the budget is tighter. We keep material lead times current for Anaheim projects and order early so a delayed window or cabinet run doesn’t stall your schedule. Your remodel, fully managed, from rough-in to final punch list.
Common General Contractor Problems We See in Anaheim Homes
- Cloth-wrapped wiring behind original drywall. 1950s and 1960s flatland tract homes in 92801 and 92805 frequently still carry original cloth-insulated wiring. Opening a wall for a kitchen or bath remodel triggers a code upgrade to modern Romex, with no attic to help fish new circuits.
- Expansive clay soil moving under slabs. Anaheim’s semi-arid climate means dry-cycle soil movement under slab foundations. We see hairline cracks and door frames out of square, and we check the foundation before we build anything new on top of it.
- Hillside lots requiring geotechnical work. Anaheim Hills additions and even some remodels need slope stability review, engineered foundations, and brush-clearance compliance tied to Very High Fire Hazard Severity Zone mapping. Skipping that step creates change orders mid-framing.
- Resort District construction constraints. Work near Disneyland and the Convention Center falls under the Anaheim Resort Specific Plan with design-review requirements, themed-exterior standards, and restricted construction hours. We schedule and plan around event calendars and noise constraints that don’t exist anywhere else in north Orange County.
See the difference
Before
After
Before
After
Before
AfterPricing for General Contractor in Anaheim, CA
| Project | Anaheim Price Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
These are real ranges for what we quote Anaheim projects. What moves a quote is what the house gives up once we look inside. A slab home with original wiring will cost more than an identical-floor-plan remodel in a newer house, because the walls have to meet current code. We write allowances for that discovery into every contract. We don’t price “ideal conditions.” We price Anaheim conditions. Call (877) 688-9930 to schedule a free estimate and get a written, line-item quote.
We Also Serve Cities Near Anaheim
Square One Builders works throughout north Orange County. Beyond General Contractor in Anaheim, we serve homeowners in Fullerton, Placentia, Orange, and Villa Park. The housing stock changes from one city to the next, and so do the permit requirements, but the way we quote doesn’t: inspection first, honest allowances, written change orders, and one accountable team from start to finish.
Serving Anaheim, CA — Our Local Coverage Area
We’re based in the Anaheim 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 Anaheim
It will if the contractor quoted the surfaces without checking what’s behind them. We don’t bid that way. Before we write a kitchen quote for an older slab home in 92801, 92802, 92804, or 92805, we probe the wall, check the panel, and look at the floor assembly as much as access allows. Then we write allowances for wiring replacement, framing corrections, and subfloor repair directly into the contract. When we find something like cloth-insulated knob-era wiring or a rotted subfloor under an old sink cabinet, you see the line item before we touch it. The budget moves because the house needs to be brought to code, not because the contractor hid the cost. Call (877) 688-9930 for an exact quote, estimates are free.
Yes, most bathroom remodels in Anaheim require a building permit, especially when you touch plumbing, electrical, or structural framing. Once the walls are open, the rough-in has to be inspected before drywall closes. We tie our draw schedule to inspection sign-off, so the crew never covers work the city hasn’t confirmed. If the inspector flags something, we fix it while the wall is open, not after it’s tiled. That’s the point of the process.
Resort District work near Disneyland and the Convention Center runs under the Anaheim Resort Specific Plan, which means design review, themed-exterior standards, and restricted construction hours tied to park and event schedules. Anaheim Hills projects are different: slope stability, engineered foundations, geotechnical reports, and brush-clearance compliance under fire hazard zone mapping. We handle both, but we never treat one like the other.
By doing the geotechnical work before framing plans are drawn, not after demo starts. We order the soil and slope report, design the foundation for expansive clay and grade movement, and price the retaining and drainage work up front. A hillside addition in Anaheim Hills costs more than a flatland addition, but the cost should be known before you sign the contract. If a contractor skips the report, the change order arrives mid-framing, and it’s never small. Call (877) 688-9930 and we’ll walk you through exactly how we scope a slope job.
We set draws against completed, inspected work, not calendar days. Rough-in inspection passed, first draw released. Drywall closed and signed off, next draw. Final inspection passed, final draw and punch list walkthrough. We walk the finished space with you, write down everything that isn’t right, and we don’t call the job done until the list is cleared. That’s how a remodel in Anaheim should close.
Square One Builders: Built for Anaheim’s Older Homes
Anaheim’s flatland tract neighborhoods were built fast, in the 1950s and 1960s, on slab foundations with minimal attic clearance. That construction style means a kitchen or bath remodel that looks simple from the surface can go deep quickly. Cloth-wrapped wiring behind original drywall, undersized wall framing bearing more than it was designed for, subfloors rotting under slow leaks that predate the current owner. On a 1958 slab tract home off West and Lincoln in 92805, our crew opened a galley kitchen wall for a load-bearing change and found cloth-insulated knob-era wiring plus a subfloor that had been decaying under a slow leak behind the old sink cabinet. We stopped, wrote the findings into a change order with the electrician’s rough-in and the subfloor repair priced line-by-line, and had the homeowner’s sign-off before anyone touched a circuit, then cleared the permit inspection sign-off before drywall closed it back up. That’s how we work in Anaheim.
From the ground up. One contractor, every system. Built to stay that way.
Written by Brent Calloway, Owner at Square One Builders, serving Anaheim since 2015.