Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Windsor
Hiring a general contractor in Windsor, CA means finding someone who actually understands what happens to houses here. Not just the permits. Not just the build. The clay soil under your foundation, the watershed rules that change what you can add and where, and the way a 1970s ranch off Brooks Road needs different work than a newer home near Foothill Regional Park. Mason Remodeling has managed remodels, additions, and full-home projects across Windsor, and we’ve learned that the thing that protects your budget most is a contractor who scopes the job honestly before the first tool is unpacked. Call (803) 680-2547 to schedule a free estimate. You’ll get a written price before any work starts. No verbal ballparks that grow on the final bill.
Why Mason Remodeling Is Windsor’s Preferred General Contractor Company
Windsor homeowners don’t hand a house key to someone they’ve never met. We wouldn’t either. That’s why every Mason Remodeling crew member arrives under the Threshold Standard: background-checked, identity-verified, in a clean marked uniform, holding a photo ID badge at your door. You get a text or email with the technician’s name and photo before they arrive. Not a description of “one of our guys.” A name. A face. A badge. That matters when you’re home alone, or your kids are, or your parents are.
Isaac Pruett, who leads our team, has built his reputation in Windsor on the boring stuff that saves you money: scoping the unseen problems before quoting, walking the site with the subfloor and soil in mind, and writing the price down so nobody has to argue about it later. Our Windsor customers tell us the same thing: the estimate matched the invoice. Not close. Matched. The 365-Day Done Right Promise puts that in writing: if the work isn’t right within a year of completion, we come back and make it right at no cost to you.
Styles & brands we work with
Hire a General Contractor in Windsor
Hire a General Contractor in Windsor when the job touches structure, plumbing, electrical, or load-bearing walls. That’s not a formality. It’s what separates a code-compliant remodel in the Windsor school district from something you discover isn’t permitted when you try to sell. A typical kitchen remodel here runs $14,000 to $45,000. A bathroom remodel runs $9,000 to $28,000. A home addition starts around $45,000 and can reach $130,000 depending on how the second story or bump-out interacts with your foundation and lot line.
Permits and inspections, handled
Windsor sits inside Sonoma County’s permitting jurisdiction, and interior work that moves plumbing or load-bearing walls triggers plan review and inspection. We pull the permits. We schedule the inspections. You keep the sign-off records. A general contractor who waves off permits is handing you a problem you’ll pay for at selling or refinancing time.
Written scope before any work starts
We walk the job with you, open up the areas we suspect need attention, and write a line-item scope with real material allowances. No “allowance” that somehow becomes an upgrade charge. The number on the contract is the number on the invoice, unless you change the scope after signing. And if you do, that’s a written change order you approve before the work happens.
General Contractor Services in Windsor
General Contractor Services in Windsor cover the full arc of a project: demolition, rough-in, structural work, drywall, finishes, and the final walkthrough with you. We’re the single point of accountability for kitchen remodels, bathroom remodels, whole-home renovations, room additions, basements, and decks. A cabinet installation in Windsor runs $4,000 to $13,000 depending on cabinet brand and the condition of the walls behind them. Countertops run $2,000 to $6,500 with material from Cambria, Silestone, or Caesarstone.
Kitchen and bath remodeling done end to end
A full kitchen remodel means removing down to studs, updating the electrical panel if it’s undersized, correcting any floor deflection, and rebuilding to spec. A bathroom remodel means waterproofing done right, with the Schluter strip at the tile-to-floor transition sealed properly, not caulked later. These are the things that show up in a punch list when someone skips them.
Whole-home and addition work
If you’re adding square footage in Windsor, expect the soils question to come up early. More on that below. The point here is that our team runs the whole thing: foundation, framing, mechanicals, and finishes, with one written price and one warranty attached to the whole project.
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.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Windsor
We stock and install cabinets from KraftMaid and Wellborn, surfaces from Cambria, Silestone, and Caesarstone, fixtures from Kohler, Moen, and Toto, and panels or finishes specified for your job. Having those relationships in place means shorter lead times for Windsor residents and fewer freight surprises on the final number. If a warranty issue arises on a material, we handle the claim directly. You don’t get handed a phone number and told to sort it out yourself. We also watch the prefab and panelized world closely, including builders like Abodu, Cover, and Mighty Buildings, so if you’re weighing a traditional addition against a factory-built ADU, we can give you a straight comparison instead of a sales pitch for one over the other.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Windsor Homes
- Clay-soil movement under older slabs. Windsor’s location at the edge of the Russian River watershed leaves many homes sitting on expansive clay. When that soil wets and dries, it moves, and the first sign is often a subfloor that heaves or a door that stops latching. Any remodel that doesn’t check this before quoting is guessing.
- Floodplain and septic review on additions. Certain Windsor properties fall inside FEMA flood zones or Sonoma County septic review areas. An addition or ADU can trigger a flood-elevation certificate or a soils report before the permit office will even stamp the plans. Skipping that check wastes weeks and money.
- Allowances that don’t match Windsor material costs. A bid with a $2,000 cabinet allowance falls $6,000 short of what a KraftMaid or Wellborn kitchen actually costs here. We write allowances at real local numbers so the final price doesn’t jump mid-project.
- Interior work done without inspection sign-off. When a Windsor homeowner later goes to sell or refinance, unpermitted work becomes a title and appraisal problem. We pull permits on every job. You keep the green tags.
Pricing for General Contractor in Windsor, CA
Windsor pricing tracks the Sonoma County market, which means you’ll pay a bit more than in some neighboring towns because material delivery and skilled labor are tighter here. A small bathroom remodel runs $5,000 to $12,000. A walk-in shower install runs $4,500 to $12,000. A garage conversion lands between $30,000 and $80,000, and an ADU runs $90,000 to $220,000 depending on site constraints, utility tie-ins, and whether the soils report forces a deeper foundation. The table below lays out the most common line items. Call (803) 680-2547 for a free estimate, and we’ll give you a written price before any work begins.
| Project in Windsor | Typical 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 |
| Cabinet Installation | $4,000 – $13,000 |
We Also Serve Cities Near Windsor
Our crews serve Windsor and the surrounding towns, including Healdsburg, Santa Rosa, Sebastopol, and Calistoga. If you’re just over the line in any of those communities, the same written-price process applies. You can find us listed as your General Contractor team, and this page covers Windsor work specifically.
Serving Windsor, CA - Our Local Coverage Area
We’re based in the Windsor 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 Windsor
Yes, any kitchen or bathroom remodel in Windsor that moves plumbing, wiring, or load-bearing walls requires a permit through Sonoma County. Even a like-for-like cabinet swap can trigger a plumbing rough-in inspection if you’re moving the sink drain a few inches. We pull the permits and schedule every inspection. Call (803) 680-2547 for an exact read on your project.
Three things drive price in Windsor more than anything: the condition of the subfloor and foundation (clay soil moves), the permit path (flood-elevation or soils reports add cost and time), and the material allowances (real Windsor prices for cabinets and stone, not national averages). A kitchen at $18,000 is usually a cosmetic refresh. A full gut-and-rebuild runs $30,000 to $45,000 here. Call (803) 680-2547 and we’ll show you the line items.
If you change the scope mid-job, you sign a written change order with the revised work and price before that portion starts. No surprise invoices. No “we’ll figure it out later.” You approve the number, we do the work. That’s the Mason Remodeling standard on every Windsor project.
A bathroom remodel in Windsor typically runs 3 to 5 weeks after permits clear. A kitchen runs 6 to 10 weeks. An addition or ADU runs 4 to 7 months, longer if the soils or flood review adds engineering time. We’ll give you a written calendar at contract, and we’ll update it if inspections move dates. Call (803) 680-2547 for a schedule built around your specific project.
You and Isaac Pruett walk the project together, marking every item that isn’t done to spec. We work the list until it’s closed, then the county inspector signs off. You get the signed inspection card and the warranty in writing: 365 days from the completion date, with a free return visit if a repair or install fails. Call (803) 680-2547 to schedule your free estimate.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Windsor since 2004.
