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 Wildomar
Square One Builders is a full-scope General Contractor serving Wildomar homeowners from the rural acre-plus parcels off the Santa Rosa Plateau side to the newer infill subdivisions near the I-15 corridor. We coordinate every system of a remodel under one contract, so you’re not juggling a separate roofer, window crew, cabinet installer, and concrete sub. If you’re planning a kitchen, bathroom, addition, ADU, or whole-home renovation, call us at (877) 688-9930 for a free estimate. We know Wildomar’s permitting realities, its housing stock, and what actually drives a project calendar here.

Why Square One Builders Is Wildomar’s Preferred General Contractor Company
Wildomar homeowners call us because we speak the language of this specific market. We understand that a detached shop conversion off a rural road near the Santa Rosa Plateau is a different animal than a kitchen remodel in a newer Wildomar infill tract. The well-and-septic review alone changes how we sequence a job. Brent Calloway built this company around one principle: one contractor, every system, one accountable team. That matters more on acre parcels where five separate trades would otherwise be coordinating around septic inspections, Cal Fire sign-offs, and a long private driveway that a delivery truck has to navigate.
Our Wildomar customers consistently tell us the same thing – they’d been quoted by specialists who only saw their piece of the project. We spec materials from 50+ brands and stage them against the inspections that actually govern Wildomar’s rural-interface builds. That’s the difference between a schedule that holds and one that quietly slips while custom cabinet lead times run out.
Styles & brands we work with







Construction Company in Wildomar
A Construction Company in Wildomar does more than frame walls and pour slabs. Here, it means managing the rural-interface realities that suburban contractors never touch: well-and-septic review, Cal Fire defensible-space inspections, outbuilding conversions, and long private driveways that affect material staging. Full-scope work in Wildomar typically runs $45,000 – $130,000 for a home addition and $90,000 – $220,000 for an ADU, depending on scope, finishes, and site conditions.
Additions and ADUs on acre parcels
The Santa Rosa Plateau side of Wildomar changes the permit sequence. Nearly every addition or ADU passes through well-and-septic review and a Cal Fire defensible-space inspection before framing. We sequence long-lead items around those sign-offs so your Cambria countertops aren’t sitting in a warehouse while you wait on an approval.
Outbuilding and shop conversions
Many Wildomar parcels include detached garages, workshops, and barns built in the 1980s and 1990s. Converting one is not a cosmetic remodel. The old slab, subfloor, and load-bearing framing behind the finishes need engineering before millwork is templated. We handle that first.
Remodeling Contractor in Wildomar
A Remodeling Contractor in Wildomar has to respect the housing stock. Much of Wildomar is 1980s-2000s custom and semi-custom single-family homes on large lots, plus older ranch properties that weren’t built to today’s engineering standards. A kitchen remodel in Wildomar typically runs $14,000 – $45,000, a bathroom remodel $9,000 – $28,000, and a garage conversion $30,000 – $80,000. We fix those ranges in writing before ordering.
Kitchen and bath remodels with real lead times
On a high-end Wildomar job, custom cabinetry and specialty glass set the calendar, not labour. We template millwork only after the framing and rough-in are verified, so a change order doesn’t land after fabrication when nothing can be returned.
Whole-home and designer-coordinated work
When an architect or designer specifies Cambria, Silestone, or architectural glass on a Wildomar custom home, we order against a written allowance. Not a verbal one. That’s the difference between a change order everyone signs before work and a dispute after fabrication.

Trusted Brands We Service in Wildomar
We stock and install materials from a curated portfolio of 50+ brands, so Wildomar customers don’t have to chase down specialty supply houses. For roofing, that includes CertainTeed, Owens Corning, and IKO – three of the most widely specified shingle lines in Riverside County. For cabinetry, KraftMaid and Wellborn. For countertops, Cambria, Silestone, and Caesarstone. We coordinate delivery to Wildomar jobsites, including the long private driveways where a standard box truck won’t turn around. That’s part of the job here.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Wildomar Homes
- Quoting labour as the schedule driver on plateau ADUs. Custom cabinetry and architectural glass lead times are what actually blow a calendar, while septic and Cal Fire sign-offs stack up behind them.
- Treating an outbuilding conversion as a cosmetic remodel. The old slab, subfloor, and load-bearing framing behind the finishes need engineering before millwork is templated. Skip that and the finish work gets torn out later.
- Ordering designer-specified Cambria or Silestone against a verbal allowance. A change order lands after fabrication when the slab is already cut. Nothing can be returned at that point.
- Ignoring clay-soil movement on sloped lots. Wildomar’s seasonal soil movement cracks stucco, shifts slabs, and exposes drainage and grading problems every winter rain. We account for it before we frame.
Pricing for General Contractor in Wildomar, CA
Here are the ranges we quote in Wildomar, based on current market conditions in the 92595 ZIP code and the rural-interface realities that apply on acre parcels:
| Project | Typical Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
The biggest cost swings in Wildomar come from rural site conditions: septic distances, defensible-space clearing, slab remediation on older outbuildings, and material delivery on long private drives. We fix scope, allowances, and the draw schedule in writing before the deposit leaves. Call (877) 688-9930 for a free estimate with a written line-item quote.
We Also Serve Cities Near Wildomar
Square One Builders covers the full General Contractor in Wildomar service area, plus Murrieta, Murrieta Hot Springs, Sedco Hills, and Lakeland Village. The rural-interface realities on this side of Riverside County are different from the tract work west of I-15, and we plan accordingly. Call us at (877) 688-9930 to schedule a free estimate anywhere in the Wildomar area.
Serving Wildomar, CA — Our Local Coverage Area
We’re based in the Wildomar 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 Wildomar
Because KraftMaid, Wellborn, Cambria, and architectural glass suppliers run 4-12 week lead times, and labour is usually available. On a large-lot parcel off the rural roads near the Santa Rosa Plateau, we built a detached shop-to-ADU conversion where the countertops and cabinetry were ordered before the septic and defensible-space sign-offs were even scheduled. The long-lead millwork set the calendar while our crew worked rough-in and subfloor behind it. We order only against a written, client-signed allowance so nothing changes after fabrication. Call (877) 688-9930 for a schedule review on your project.
Nearly every addition or ADU on that side of Wildomar passes through well-and-septic review and a Cal Fire defensible-space inspection before framing. Those are approvals that Murrieta and Temecula tract builders never see, and they routinely add weeks. We sequence long-lead material orders around those sign-offs rather than hoping the calendar works out. Call (877) 688-9930 and ask for Brent Calloway – he’ll walk you through the permit sequence for your specific parcel.
Yes, and it’s a specialty of ours in Wildomar because so many parcels include detached garages, workshops, and barns from the 1980s and 1990s. The job is not a cosmetic remodel. We engineer the old slab, subfloor, and load-bearing framing first, then template millwork and order finishes. If your outbuilding is on a rural-interface parcel with well and septic, we coordinate those reviews too. Call (877) 688-9930 for a free estimate.
We fix scope, allowances, and the draw schedule in writing before the deposit leaves. When a load-bearing wall at an old shop line has to become a change order, everyone signs it before work continues – no surprises, no retroactive charges. That’s the only way to handle designer-specified Cambria or Silestone and specialty glass, because once those are fabricated, nothing can be returned. Call (877) 688-9930 and we’ll show you a sample contract.
Yes. Brent Calloway and our team work directly with your architect or designer, and we order their specified materials against written allowances. We don’t substitute brands without your written sign-off. On Wildomar custom homes with architectural glass and millwork-heavy interiors, that coordination is what keeps the schedule honest. Call (877) 688-9930 to talk through your plans.
Written by Brent Calloway, Owner at Square One Builders, serving Wildomar and the surrounding Riverside County area since day one.