A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Duncanville, TX
An ADU (accessory dwelling unit) is a small, self-contained living space built on the same lot as your main home. In Duncanville, these projects typically run from about $120,000 for a garage conversion to $250,000+ for a detached backyard unit. Lodgewick ADU Dallas is the ADU company of the Kingswell family, and we’re the team Duncanville homeowners call when they want a written price before any work starts. Call (361) 204-4652 and a live person answers, day or night.
Duncanville jobs are different from what crews see in newer suburbs. The housing stock skews toward 1950s through 1970s ranch-style homes on generous lots, which means ADU work here often involves aging foundations, original plumbing stacks, and electrical panels that predate the energy loads a modern ADU demands. The reward is real: those wide lots on streets like Oriole Boulevard and Center Street can often fit a detached ADU or a garage conversion without a variance fight.
Why Duncanville Homes Are Different
Duncanville sits on the chalky limestone and clay of the Blackland Prairie, and that geology shapes every foundation we touch. The clay here expands when it rains and contracts during the long north Texas dry spells, which is why so many older Duncanville homes have hairline slab cracks and slightly out-of-level floors. Any ADU tied into an existing slab needs a soils assessment before we commit to a footprint. Skipping that step is how you get a crack running through new drywall eighteen months later.
The housing stock matters too. Most homes between Main Street and Cedar Hill Road were built before 1980, and many have never had a major electrical upgrade. A detached ADU with a mini-split, water heater, and kitchen appliances can push an old 100-amp panel past its limit, so panel upgrades show up in a lot of our Duncanville quotes. On the plus side, Duncanville’s alleys and deep lots mean we can stage materials and a dumpster off the street, which keeps the job site cleaner and the neighbors happier.
Duncanville’s building permit process follows the City of Duncanville’s adopted codes, and accessory dwelling unit projects on residential lots require site plan review and setbacks that vary by zoning district. We handle that paperwork as part of the project. What homeowners notice most, though, is the summer heat. Pouring a foundation or setting a panelized wall in July heat means scheduling concrete pours before 10 a.m. and planning for materials that don’t warp in a hot staging area.
Our Main Duncanville Services
Duncanville homeowners call us most for two things: turning an attached garage into livable space, and building a new detached unit in the backyard. Here’s what each job looks like in Duncanville.
Home Addition Contractor in Duncanville
A home addition in Duncanville means adding square footage directly onto your existing house, usually a new primary suite, a family room, or a larger kitchen. On the 1960s ranches common near Harrington Park, the trick is matching rooflines and brick so the addition doesn’t look bolted on. Older homes here rarely have perfectly square framing, so we account for that before we cut openings. Get the full breakdown on our Home Addition Contractor in Duncanville page.
Garage Conversion Contractor in Duncanville
A garage conversion takes your existing attached or detached garage and turns it into a living space: a studio apartment, a home office, or an in-law suite. In Duncanville, the biggest questions are insulation and slab condition. Garages built in the 1960s and 1970s often have slabs sloped for drainage and no vapor barrier, which matters when you’re putting down flooring. See how we handle it on our Garage Conversion Contractor in Duncanville page.
ADU Builders in Duncanville
A detached ADU is a new, separate structure in your backyard: a small house with its own entrance, kitchen, bath, and address. Duncanville’s deeper lots work well for this, especially when we can tuck the unit behind the existing home for privacy. We walk every lot before quoting, because the clay soil and tree cover change the foundation and drainage plan. The full process is on our ADU Builders in Duncanville page.
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.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Duncanville
Our crews work with established prefab and materials brands including Tuff Shed, Plant Prefab, and James Hardie. We match the brand to the lot, budget, and timeline, and because we handle installation in-house, Duncanville homeowners don’t get stuck between a manufacturer and a contractor when something needs attention.
Pricing for ADU Company in Duncanville, TX
| Service | Typical range in Duncanville |
|---|---|
| Garage conversion (attached, finished) | $120,000 – $180,000 |
| Detached ADU (standard unit) | $180,000 – $280,000 |
| Detached ADU (larger or custom) | $250,000 – $375,000 |
| JADU (junior ADU, enclosed within existing home) | $80,000 – $140,000 |
| Prefab factory-built ADU (mid-range) | $150,000 – $230,000 |
| Foundation work for detached ADU (varies with soil) | $15,000 – $35,000 |
| Electrical panel upgrade (100A to 200A) | $4,000 – $8,000 |
| Site prep, grading and drainage | $8,000 – $20,000 |
Duncanville prices push toward the upper end of these ranges when the lot needs significant leveling, when we have to replace an old sewer line, or when the design moves into custom cabinetry and high-end finishes. Whatever the number turns out to be, you get it in writing before we start, and that number does not change at the door.
Neighborhoods We Serve in Duncanville
We work across all of Duncanville, from the established streets near Main Street and Camp Wisdom Road to the neighborhoods along Cedar Ridge and Danieldale Road. Our crews typically reach any Duncanville scheduling call within one business day for an estimate visit.
- Harrington Park area
- Oriole Boulevard corridor
- Neighborhoods near Main Street and Center Street
- West Duncanville along Cedar Ridge
- Danieldale Road area
Service Area – Cities Near Duncanville
Our Duncanville crews also handle projects in nearby communities. If you’re just across the line in Cedar Hill, TX or Grand Prairie, TX, the permitting and soil conditions are similar enough that we can quote accurately. We also serve Dallas, TX and Red Oak, TX from the same scheduling desk.
Serving Duncanville, TX - Our Local Coverage Area
We’re based in the Duncanville 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 Company in Duncanville
You can usually get an estimate visit within one business day of calling. We send a person, not a sales call center, and they’ll walk the lot, check access, and give you a written price. Call (361) 204-4652 to schedule.
Yes. Duncanville requires site plan review, building permits, and inspections for ADUs and garage conversions. We pull the permits, schedule the inspections, and handle corrections if the inspector flags anything. It’s part of the project, not an add-on.
Some Duncanville neighborhoods have deed restrictions or HOA rules that affect detached structures and rental use. We review your specific subdivision’s rules before we quote, because a written price means nothing if the HOA blocks the project later. Call (361) 204-4652 and we’ll check while we’re out for the estimate.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Duncanville Customers Say
"I was nervous about adding on but they walked me through every step and every cost before we started. No surprise change orders halfway through like I'd heard horror stories about."
- Eleanor Pratt"Garage conversion into an office and guest room. Fair written price, finished close to on schedule, and they fixed a small drywall crack under warranty months later without any hassle."
- Diana Cho"Solid build on a home addition. The permit stage dragged, which held things up a few weeks. They were upfront it was out of their hands and the construction itself moved fast and clean."
- Douglas Fenwick
