A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Madera
Adding an accessory dwelling unit in Madera typically costs between $180,000 and $320,000 for a detached unit, with garage conversions running $90,000 to $160,000. That’s a real range, not a teaser number. We coordinate scheduling from our Fresno, Central Valley office and send crews into Madera neighborhoods every week, so you’re not waiting on a contractor from out of the area. If you’re weighing an ADU on a 1970s ranch off Howard Road or a new-build lot near the Rancho San Miguel area, call (559) 354-0579 and we’ll give you a written price before any work starts.
Why Lodgewick ADU Fresno Is Madera’s Preferred ADU Builders Company
The Kingswell family established Lodgewick in 2010 with a simple rule: put everything in writing. Madera homeowners tell us the same stories, over and over, about contractors who gave a verbal estimate and then changed the number once the walls were open. That doesn’t happen with us. Every project starts with a written price, a defined arrival window, and the 365-Day Done Right Promise, which says plainly: if the work isn’t right, we come back and make it right, free, within a full year. You get that guarantee in writing before the first nail goes in.
Russ Delmar leads our team, and he’s built a crew that understands what Madera’s housing stock actually requires. We know the stucco tract homes near Madera South High School. We know the older in-town bungalows near Courthouse Park. We know what city inspectors look for when a detached ADU permit crosses their desk. That matters because Madera’s building department has specific expectations for electrical upgrades, frost protection, and foundation work that a generic out-of-town crew won’t anticipate.
Our ADU Builders team answers every call with a live person, not a voicemail tree. Whether it’s midnight and you’re wondering about a change order, or Tuesday afternoon and you want to confirm your crew’s arrival, someone picks up. That’s The Kingswell Way: say the price before the work, show up in the window given, leave the place cleaner than found, put the guarantee in writing, and come back if it fails.
ADU Construction in Madera
ADU Construction in Madera means building a permitted accessory dwelling unit on a lot that already has a primary home. Most of the homes we work on here are 1970s to 2000s single-story ranches and stucco tract houses on 6,000 to 10,000 square foot lots, which means there’s usually room. But opening up a 1978 ranch on Encanto Drive or a 1990s tract home off Cleveland Avenue turns up things that weren’t visible during the bid: undersized electrical panels, dry rot at the sill plates, and plumbing runs that were never insulated for a freezing January night. A detached ADU in Madera runs $180,000 to $320,000. A garage conversion runs $90,000 to $160,000. The final number depends on what we find when the walls come open, and that’s exactly why we write allowances into every contract.
What a permit triggers
Once we open walls for a permitted ADU, Madera building officials require arc-fault and GFCI upgrades on existing circuits. Cheap bids skip that line item. We don’t, because we know the inspector will flag it and the homeowner will be stuck paying for it mid-project with no choice.
Frost and framing realities
Madera’s foggy winter nights drop below freezing often enough that an uninsulated PEX run in a crawlspace will burst by January. We insulate and route plumbing accordingly, and we check sill plates for moisture damage before any concrete gets poured.
Detached ADU in Madera
A Detached ADU in Madera is a separate structure with its own foundation, walls, roof, and utility connections, and it’s the most common ADU type we build here. The city’s newer northwest and southeast subdivisions have larger lots that accommodate a 600 to 1,000 square foot detached unit without sacrificing much yard. For multi-generational farmworker families, that separation matters: grandparents get privacy, adult children get their own space, and nobody has to leave the family property. A custom detached ADU in Madera runs $200,000 to $320,000. A prefab detached unit from Abodu or Cover typically lands between $180,000 and $260,000 installed.
Site prep on Madera lots
Madera’s expansive clay soil shifts with irrigation cycles, which means a floating slab without proper soil testing can crack within a year. We don’t skip the soil test. For older in-town bungalows from the 1920s to 1950s, we also check foundation conditions before we commit to a footprint.
Harvest-season moves
Madera’s detached ADU permits spike after the raisin and almond harvests, when farmworker families have cash on hand and relatives relocate for work. That makes fall and early winter our busiest stretch here, unlike Fresno’s steadier year-round demand. If you’re planning a unit for a family member arriving after harvest, call us by late summer.
Trusted Brands We Service in Madera
We work regularly with Abodu, Cover, and Dvele, and we stock common parts and materials locally so Madera customers aren’t waiting on a shipment from out of state. Whether it’s a prefab shell from Abodu that needs foundation and utility hookup, or a custom build using James Hardie siding that matches the existing home’s exterior, our crews know these systems. The brand choice affects your timeline and your budget, and we’ll walk you through which one fits a Madera lot, a harvest-season deadline, and a written price.
Common ADU Builders Problems We See in Madera Homes
- Knob-and-tube wiring hiding in 1970s ranches. We opened up a 1970s ranch in northeast Madera near Avenue 17 and found knob-and-tube in the main panel. Once walls are open for a permitted ADU, the city requires arc-fault and GFCI upgrades, and we had documented that overage against the allowance in the contract before rewiring anything.
- Rotted sill plates from sprinkler overspray. Years of lawn sprinklers hitting the same exterior wall eats through the bottom plate. We sister new pressure-treated lumber and document every linear foot before replacing it, because the inspector will want to see it.
- Frost-prone plumbing in detached ADUs. Madera’s cool, foggy winters drop below freezing enough that an uninsulated PEX run in a crawlspace will burst by January. We insulate all exposed plumbing and keep water lines inside the conditioned envelope where possible.
- Expansive clay and slab cracks. Madera’s soil shifts with irrigation cycles. A slab poured without testing and proper reinforcement can crack within the first year, and that crack runs through your new ADU, not just the patio.
Pricing for ADU Builders in Madera, CA
A custom detached ADU in Madera runs $200,000 to $320,000 for a 600 to 1,000 square foot unit. A garage conversion runs $90,000 to $160,000. A prefab or modular detached unit from Abodu or Cover typically lands between $180,000 and $260,000 installed. A junior ADU, which is a smaller unit within the existing home, runs $70,000 to $120,000. What moves the number: the condition of your existing electrical panel, whether we find dry rot or termite damage once walls are open, soil conditions and foundation type, interior finishes, and whether your lot triggers any city-specific setbacks. We write allowances into every contract so surprised aren’t surprises. Call (559) 354-0579 for a free, written estimate on your Madera project.
We Also Serve Cities Near Madera
Our crews cover Madera and the surrounding Central Valley communities. We work regularly in Fresno, Clovis, Kerman, and Chowchilla, and we understand the local building departments in each. If you’re in one of those cities and weighing an ADU, we’ll give you the same written price and the same 365-Day Done Right Promise.
Serving Madera, CA - Our Local Coverage Area
We’re based in the Madera 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 ADU Builders in Madera
Not always a full panel upgrade, but Madera inspectors do require arc-fault and GFCI upgrades on existing circuits once walls are open for a permitted ADU. If your panel is a 100-amp unit from the 1970s, you’ll likely need a 200-amp upgrade to feed the new ADU. We write that allowance into the contract so the number doesn’t change at the door. Call (559) 354-0579 and we’ll look at your panel during the free estimate.
We document the damage, price the repair, and get written approval before we touch it. That’s the whole point of the allowance system. When we opened a 1970s ranch in northeast Madera near Avenue 17, we found rotted sill plates from years of sprinkler overspray. We showed the homeowner photos, gave them a line-item price, and got approval before sistering new pressure-treated lumber. No surprises, no change orders you didn’t authorize.
Yes, most of the time. State law now allows ADUs within four feet of side and rear property lines, which means a backyard unit fits on the vast majority of Madera’s 6,000 to 10,000 square foot lots. The constraints are usually utility placement and existing structures, not raw square footage. We’ll measure your specific lot during the free estimate and tell you what fits.
Farmworker families have cash on hand after the harvests, and relatives often relocate for agricultural work in the fall, so demand for ADUs in Madera spikes between October and February. That’s our busiest season here, unlike Fresno’s steadier year-round pace. If your timeline depends on a harvest-season move-in, call (559) 354-0579 by late summer so we can permit and schedule the build before the rush.
We specify cool roofing materials, high R-value wall and ceiling insulation, and a properly sized ductless mini-split system for every detached ADU we build in Madera. Hot, dry summers with frequent 100°F+ days mean a poorly insulated ADU becomes unusable by July. We also protect plumbing from the reverse problem: those foggy winter nights that drop below freezing.
Call Lodgewick ADU Fresno for Your Madera ADU Project
The biggest reason a Madera ADU quote moves is what hides inside an older home: outdated wiring, rotted framing, and plumbing that was never built for frost. We handle it by inspecting first, writing allowances into the contract, and pricing every surprise in writing before we touch it. Russ Delmar and our team serve Madera every week, and we’ll put the 365-Day Done Right Promise in writing on your project too. Call (559) 354-0579 for a free estimate and a written price before any work starts.
Written by Russ Delmar, Owner at Lodgewick ADU Fresno, serving Madera and the Central Valley since 2010.
