A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Carrollton, TX
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions across Carrollton, and most of what makes the work go smoothly is knowing this city’s houses. Carrollton is thick with 1960s-to-1990s ranch and traditional homes on generous lots, many with slab foundations and clay soil that moves with every wet-dry cycle. That shapes how we price, how we permit, and how we build. If you’re planning an ADU on your Carrollton property, call (903) 342-8977 for a free estimate and a written price before any work starts.
Why Carrollton Homes Are Different
Carrollton ADU work rarely starts with a blank backyard. It starts with a detached garage from 1978, or a concrete patio that has settled unevenly, or a 2-inch cast iron sewer line that was fine for a washer but won’t meet code for a bathroom. The city’s accessory dwelling unit ordinance requires owner occupancy on single-family lots, which changes the permitting path and means the homeowner has to be the one applying, not a short-term rental operator.
The older housing stock around Josey Ranch and the historic downtown area means we regularly open walls and find wiring or framing that predates current standards. Slab foundations make new plumbing and electrical runs slower and more expensive than pier-and-beam, because the concrete has to be cut and trenched. And the climate is not gentle on a new unit: summers run hot and humid, so HVAC sizing matters, and the occasional ice storm means exposed piping needs freeze protection from day one. None of this is unknowable. It just has to be planned for before the first inspection.
Our Main Carrollton Services
Most Carrollton homeowners call us about one of three things: adding a room, converting a garage, or building a detached ADU. Each has its own permitting and design realities here, so each has its own page.
Room Addition Contractor in Carrollton
A room addition in Carrollton usually means tying into an existing slab foundation, rerouting HVAC, and matching rooflines on homes built between the 1960s and 1990s. The clay soil means the new foundation needs proper piers or a slab designed for movement, or the addition will pull away from the house within a few years. We price the job in writing before work starts and pull permits through the city. Room Addition Contractor in Carrollton has the full breakdown.
Garage Conversion Contractor in Carrollton
Garage conversions are the most common ADU route in Carrollton because the structure already exists. The catch is usually the slab: many detached garages were poured thinner than living-space code allows, and the sewer line is often a 2-inch cast iron pipe that has to be replaced or sleeved before you can add a bathroom. We handle the structural upgrades, insulation, and utility work so the finished unit passes inspection. Garage Conversion Contractor in Carrollton walks through what a conversion costs and takes.
ADU Builders in Carrollton
A detached ADU in Carrollton has to clear the owner-occupancy requirement, a setback review, and a foundation design that accounts for shrink-swell clay. We build conventional units with James Hardie siding and also work with Boxabl and Plant Prefab for homeowners who want a faster, factory-built path. The right build method depends on your lot, your budget, and how quickly you need the unit occupied. ADU Builders in Carrollton explains the options side by side.
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 Carrollton
We install, assemble, and finish units from Boxabl, Plant Prefab, and Tuff Shed, and we build conventionally with James Hardie siding. Parts and materials are sourced through local Dallas-Fort Worth suppliers, so lead times stay short even when a specific panel or trim profile is on backorder nationally. See our brands for the full list.
Pricing for ADU Company in Carrollton, TX
| Service | Typical range in Carrollton |
|---|---|
| Detached ADU (prefab, Boxabl or Plant Prefab) | $180,000 – $260,000 |
| Detached ADU (conventional build) | $220,000 – $340,000 |
| Garage conversion ADU (finished unit) | $120,000 – $180,000 |
| Garage conversion ADU (shell only) | $70,000 – $100,000 |
| Room addition (primary suite, 400 sq ft) | $135,000 – $200,000 |
| Room addition (second story, 600 sq ft) | $190,000 – $275,000 |
| Bathroom addition | $65,000 – $110,000 |
| Structural upgrade (foundation piers, beams) | $15,000 – $45,000 |
| Sewer line replacement or sleeving | $8,000 – $22,000 |
Carrollton prices run higher than the metro average when a project involves cutting through a slab, replacing a 2-inch cast iron sewer line, or adding foundation support for clay soil. Whatever the scope, the price goes in writing before any work starts, and the number you approve is the number on the final invoice.
Neighborhoods We Serve in Carrollton
We work across the city, including neighborhoods around Josey Ranch, the historic downtown district, Indian Creek, Castle Hills, and Rosemeade. Most Carrollton job sites are within a 15-to-20-minute drive of our Dallas-Fort Worth dispatch office, and scheduling is handled by a live person on the phone, not an automated line.
- Josey Ranch
- Historic Downtown Carrollton
- Indian Creek
- Castle Hills
- Rosemeade
Service Area – Cities Near Carrollton
Fielding ADU Builders serves Carrollton and the surrounding Dallas-Fort Worth suburbs. If your property is in a neighboring city, you can find the same written-price and one-year guarantee approach in Coppell, TX, Grapevine, TX, Dallas, TX, and Irving, TX. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office; crews serve Carrollton locally.
Serving Carrollton, TX - Our Local Coverage Area
We’re based in the Carrollton 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 Carrollton
Yes. Carrollton’s accessory dwelling unit ordinance requires the property owner to live on the lot, either in the main house or the ADU. That means no short-term-rental-only setups, and the homeowner has to be the permit applicant. Call (903) 342-8977 if you’re unsure whether your lot qualifies.
Most Carrollton ADU and addition permits clear within 4 to 8 weeks, depending on whether you need a setback variance or a foundation design review for clay soil. We handle the drawings, the submittals, and the inspection scheduling so you don’t have to chase the city. For a specific timeline on your job, call (903) 342-8977.
We cover the entire city, from the historic downtown area to Josey Ranch, Indian Creek, and Castle Hills. Our crews serve Carrollton locally, with scheduling handled by a live person 24 hours a day. Call (903) 342-8977 to schedule a free estimate and get a written price.
Call (903) 342-8977 to schedule your free estimate. Fielding ADU Builders is led by Reed Calloway and backed by The Garrison Standard: a written price before any work starts, a one-year written guarantee, and a live person on the phone whenever you call.
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 Carrollton Customers Say
"Clear price breakdown. Change orders were all in writing."
- Hal P."Good addition. Electrical inspection delayed a week, which was the county, but the build is great."
- Eva K."Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B.
