Home Additions & ADU in Winters - One Fixed Price, Permits Handled

Fast, Reliable Home Additions & ADU Across Winters

Adding square footage in Winters usually runs between $45,000 and $130,000 for a room addition, and $90,000 to $220,000 for a detached ADU, depending on whether you’re building up, building out, or converting what’s already there. Those ranges cover everything from drawings and permits through the final walkthrough with the Yolo County building inspector. Barrett & Sons Construction has been handling projects like this since 1998, and Tom Barrett answers his own phone. Call (877) 610-1318 and you’ll get a real person, not a call center.

Call (877) 610-1318

Winters isn’t a big town, and that’s exactly why hiring a contractor who knows the difference between a downtown Craftsman and a 1990s tract house matters. We’ve pulled permits here, worked with the building department here, and know which lots near the foothills trigger wildfire code requirements that never come up in Davis. If you’re planning a Home Additions & ADU project, local knowledge isn’t a nice-to-have. It’s the thing that keeps your project from stalling at plan check.

Why Barrett & Sons Construction Is Winters’s Preferred Home Additions & ADU Company

Tom Barrett founded this company in 1998, and his sons run the crews. That’s not a marketing line; that’s who shows up on-site in Winters. When a homeowner on Putah Creek Road calls about a garage conversion, the person answering the phone can answer questions about the actual job, because we’ve done the work. The company’s 90-Day Done Right Promise is written on every contract: if something isn’t right, Tom comes back and makes it right, one call.

We keep a live person on the phone 24 hours a day, seven days a week. For Winters homeowners, that means a question about a change order on a Tuesday evening doesn’t wait until Wednesday morning. Our crews carry background checks and wear the Barrett & Sons name on their uniforms. Every price change arrives as a written change order before any work proceeds. No surprise invoices at the end. The permit inspector works for you, not for me, which is why we like him.

For anyone in Winters considering a Home Additions & ADU in Winters project, the first step is the same: a free estimate with scope in writing, allowances in writing, and a clear schedule. Call (877) 610-1318.

Our Home Additions & ADU Services in Winters

ADU Design & Permitting

Every ADU in Winters starts with the design and the paperwork. We handle both, drawing units that fit on lots in the historic core near Main Street as well as larger parcels out Hwy 128 toward the foothills. Permits get pulled for every eligible job, and we work directly with the Winters building department through plan check and inspection. On foothill-adjacent lots, that includes Chapter 7A WUI compliance, ember-resistant vents, and Class A roofing specs, before the first wall is framed.

Garage Conversion ADU

Turning an attached or detached garage into a livable unit in Winters typically runs $30,000 to $80,000. The older homes near downtown often have garages with slab foundations that need leveling before framing begins, thanks to the heavy shrink-swell clay that runs under most of this town. We also address the energy-code upgrades that trigger when you pull permits on older structures, which is something out-of-area crews frequently miss until the inspector flags it.

New Detached ADU

Building a new detached ADU in Winters is a $90,000 to $220,000 project, depending on size, foundation, and finishes. On the town’s eastern and southern edges, the newer stucco-and-frame lots are generally straightforward. Closer to the western hills, expect site-specific wildfire hardening requirements. We specify those line items upfront, on paper, so the price doesn’t shift mid-project.

Junior ADU & Interior Conversion

A junior ADU, often a converted bedroom with its own entrance and kitchenette, is a practical way to add rentable space or a home for an aging parent in Winters. Interior conversions avoid the foundation and fire-zone complications that come with new construction, which often makes them faster and less disruptive. We also handle sunrooms and enclosed patios for homeowners who want more living space without a full second-story addition.

Trusted Brands We Service in Winters

We install materials you can look up, not mystery brands off a van. In Winters ADU and addition work, that means Schluter waterproofing systems in kitchens and baths, and GAF roofing on the structures that tie into your addition. When our crews work near the Highway 128 corridor where lots transition toward the Berryessa foothills, we routinely spec GAF Class A roofing as part of the wildfire hardening package the building department expects to see at plan check. If you already have Schluter in your existing home and want the ADU to match, that’s not a problem, we know the product line and install it properly.

Common Home Additions & ADU Problems We See in Winters Homes

• Expansive clay soil and foundation movement. Winters sits on heavy shrink-swell clay that drinks winter rain and then cracks through summer drought cycles. Adding square footage to a house with slab movement means addressing the foundation first, or the new work will move with it.
• Wildfire zone plan-check surprises. Lots near the western edge of town fall within CAL FIRE-designated High Fire Hazard Severity Zones. Out-of-area crews who bid standard residential specs often get sent back at plan check for missing ember-resistant vents and ignition-resistant siding, which forces a mid-project re-price.
• Older homes triggering energy-code upgrades. When you pull permits on a late-Victorian or Craftsman home near downtown, California’s energy code applies to the scope of work. We build those upgrades into the estimate upfront, in writing, so they don’t become change orders later.
• Summer heat affecting schedule and materials. Winters regularly tops 100°F in summer, and with minimal delta-breeze relief against the western hills, on-site conditions get harsh. Concrete and adhesives can cure faster than spec, so we schedule pours and installs early and monitor cure times accordingly.

Pricing for Home Additions & ADU in Winters, CA

We Also Serve Cities Near Winters

Beyond Winters, our crews regularly work in Dixon, Davis, Woodland, and West Sacramento. Dispatch and scheduling are coordinated from our Sacramento office, but the crews working your job are the same name-on-the-truck teams that serve Winters. If you’re in a neighboring city and planning a Kitchen Remodeling in Winters-style project but for your own home, or a Bathroom Remodeling in Winters-quality renovation, give us a call and we’ll come out the same way.

FAQs - Home Additions & ADU in Winters