Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Sonoma
Finding a general contractor in Sonoma means choosing someone who understands what this town actually demands from a builder: fire-zone compliance, older housing stock, and permits that require real local knowledge. Mason Remodeling has provided general contracting, bathroom remodeling, and whole-home remodeling since 2004, and we coordinate every Sonoma project from our San Francisco Bay Area office with crews working locally. We send the name and photo of every technician before they arrive, hand you a written price before any work starts, and stand behind every job with a 365-day guarantee. Call (803) 680-2547 to schedule your free estimate.
Why Mason Remodeling Is Sonoma’s Preferred General Contractor Company
Sonoma homeowners call us because we treat the door-opening moment as a safety decision, not a formality. Every crew member who arrives at your property is background-checked, identity-verified, and wears a clean marked uniform. You’ll receive their name and photo before the visit, and they’ll show a photo ID badge at the door. That’s the Threshold Standard, and it’s not optional on any job we run.
Our reputation in Sonoma has been built on written quotes and defined scopes of work. Homeowners tell us the same thing again and again: they’ve been burned by verbal estimates that ballooned, or crews that couldn’t explain what a change order actually covered. We write down every material allowance, every permit fee, and every line item before the first tool is unpacked. Isaac Pruett, who leads our team, reviews each Sonoma scope personally before you sign anything.
Response time matters. Most homeowners in Sonoma can expect a site visit within a few business days of calling. We coordinate scheduling across the county, and we’ll tell you up front if county inspectors are running behind.
Styles & brands we work with
Remodeling Contractor in Sonoma
A Sonoma Home Remodeling contractor handles projects that range from a single-bathroom overhaul to a full interior gut. What you actually get from us is a scoped, priced, and scheduled build: plans reviewed against current code, material selections locked in writing, and a permit path that matches what Sonoma’s building department will accept. Kitchen remodels in Sonoma typically run $14,000 to $45,000. Bathroom remodels land between $9,000 and $28,000. Those are real working ranges for this market, not national averages.
Kitchen and Bath Scope
We start every kitchen or bath project with a written scope that names the cabinets, counters, fixtures, and finish materials you’ve selected. If you choose KraftMaid cabinets and Cambria quartz, those names go in the document. If you switch mid-project, the change order shows exactly what moves in price and why. Isaac Pruett wants every Sonoma homeowner to see the trade-off before the change order gets signed.
Fire-Zone Remodel Considerations
Many Sonoma remodels touch exterior walls, windows, or venting. When they do, the fire-hardening rules come into play. We plan for ember-resistant vents and specific exterior materials from day one, which keeps your permit from getting flagged late in the process.
Licensed General Contractor in Sonoma
A licensed general contractor in Sonoma takes on the structural, structural-adjacent, and multi-trade work that a handyman legally cannot: room additions, ADUs, garage conversions, load-bearing wall removals, and whole-home renovations. These jobs require permits, inspections, and a clear chain of responsibility on site. Home additions in Sonoma run $45,000 to $130,000. ADU construction ranges from $90,000 to $220,000 depending on square footage, site work, and fire-zone requirements.
Additions and ADUs Under the 2022 Code
Sonoma adopted the 2022 California Building Standards Code in 2024, and that changed what a legal addition looks like here. Fire-resistant exterior materials, ember-resistant vents, and specific roof-to-wall details are now the norm in most of the Sonoma Valley. We work those into every addition and ADU plan we price, so the permit gets reviewed correctly the first time.
Structural Work and Load-Bearing Walls
Older Sonoma homes, especially 1960s and 1970s ranch houses off Lovall Valley Road and in the Diamond A neighborhood, often hide framing that was fine for its era but doesn’t meet current lateral load requirements. When you remove a load-bearing wall to open a kitchen into a living room, an engineer needs to spec the beam, and the county needs to sign off before we close the walls. We handle that coordination directly.
Trusted Brands We Service in Sonoma
We work with specification-grade material lines that hold up to Sonoma’s dry summers and rainy winters: KraftMaid and Wellborn for cabinetry, Cambria, Silestone, and Caesarstone for surfaces, Kohler and Moen for fixtures, GAF and CertainTeed for roofing, and Belgard and Unilock for hardscaping. We stock common replacement parts locally so Sonoma customers aren’t waiting on a supply house in Santa Rosa for a small trim piece. If a project involves a factory-built component from a company like Abodu or Cover, we can coordinate the site work and finishing trades around their delivery schedule.
See the difference
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After
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After
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AfterCommon General Contractor Problems We See in Sonoma Homes
- Fire-zone permit denials. A homeowner starts a room addition only to learn the plan doesn’t include ember-resistant vents or fire-rated exterior materials. Sonoma’s building department enforces the 2022 code strictly, and catching this late costs weeks.
- Change orders without written allowances. You pick Silestone, then decide mid-project you want Caesarstone. Without a written allowance, the contractor can charge anything. With a Mason Remodeling quote, the allowance is named and the delta is calculated from the actual supplier price.
- Load-bearing wall surprises. Removing a wall in a 1970s Sonoma ranch often reveals framing that needs an engineer’s stamp. If your contractor didn’t budget for re-framing and re-inspection, you pay for it as a change order you never planned for.
- Vague scopes that hide the real cost. A quote that says “general labor” without listing rough-in, drywall, paint, and trim is a quote designed to grow. Our written price names every trade so you can compare it line by line.
Pricing for General Contractor in Sonoma, CA
Here are the working price ranges for the projects Sonoma homeowners ask about most:
| Project | Sonoma 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 |
What moves a Sonoma project within these ranges comes down to four things: square footage, structural work, permit complexity under the 2022 code, and material grade. A small kitchen with stock cabinets and laminate counters sits near the low end. A kitchen with structural changes, custom cabinetry, and quartz surfaces pushes toward the top. The estimate we give you is free, written, and includes every line item. Call (803) 680-2547 to schedule yours.
We Also Serve Cities Near Sonoma
Our General Contractor team serves homeowners throughout the Sonoma Valley and southern Sonoma County. Beyond Sonoma itself, we regularly take on projects in Boyes Hot Springs, Petaluma, Novato, and Cotati. If your project sits outside city limits, ask about county permitting requirements when you call.
Serving Sonoma, CA - Our Local Coverage Area
We’re based in the Sonoma 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 Sonoma
Yes, in most cases. Any kitchen remodel in Sonoma that moves plumbing, electrical, or walls requires a building permit from the City of Sonoma or Sonoma County, depending on jurisdiction. If you’re only swapping cabinets and counters without touching mechanicals, you may not need one. We pull permits and coordinate inspections on every job where they’re required. Call (803) 680-2547 and we’ll tell you what your specific project triggers before you sign anything.
A typical home addition in Sonoma takes four to seven months from drawings to final inspection, depending on the size and whether the site needs fire-hardening upgrades. Permitting under the 2022 code adds time, especially if the building department requests a fire-zone review. We give you a written schedule with milestone dates before construction starts, and we update it if an inspection gets pushed.
A change order changes the price and often the schedule. In Sonoma, the most common change orders we see are material switches, like moving from Silestone to Caesarstone, or discovering outdated framing behind a wall that requires reinforcement. Our written price names your material allowances up front, so any switch is calculated as a real dollar delta, not a vague add-on. You approve every change order in writing before we proceed. Call (803) 680-2547 for a scope review on your project.
Because Sonoma sits in a high-fire severity zone under the state’s wildland-urban interface maps, and the city adopted the 2022 California Building Standards Code in 2024. Additions and ADUs here must include fire-resistant exterior cladding and ember-resistant vents that homes in Napa or Petaluma often don’t require. We design to those rules from the first plan set, so you don’t get a permit denial late in the process.
Yes. We coordinate design, material selection, permitting, and construction through one written scope of work. You choose the fixtures and finishes, we write them into the price, and the same crew that demos the old bathroom installs the new one. Most bathroom remodels in Sonoma run $9,000 to $28,000 depending on square footage and whether you’re moving plumbing. Call (803) 680-2547 to get your free estimate started.
For the projects we handle most often, kitchen remodels run $14,000 to $45,000, bathroom remodels run $9,000 to $28,000, home additions run $45,000 to $130,000, and ADU construction runs $90,000 to $220,000 in Sonoma. Your exact number depends on square footage, structural work, and material choices, and it’s delivered in writing before you commit to anything.
In the Diamond A neighborhood off Lovall Valley Road, our crew turned a dated 1970s ranch into a modern open-concept kitchen with KraftMaid cabinetry and Cambria quartz counters. The job required a full rough-in for new electrical and plumbing under the 2022 code, and we coordinated a county inspection sign-off before closing the walls. That’s the kind of careful, scoped work we bring to every Sonoma project.
If you’re planning a remodel, an addition, or an ADU in Sonoma, start with a written price and a named crew. Call (803) 680-2547 to schedule your free estimate. A live person answers every call, and you’ll know exactly who’s coming to your door.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Sonoma since 2004.
