A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Lake Highlands, TX
ADU construction in Lake Highlands means working with 1950s-1970s ranch homes on large lots, mature tree canopies, and Dallas zoning overlays that most contractors never mention until the permit gets kicked back. We build backyard cottages, garage conversions, and room additions here with written pricing before any work starts, and every project is covered by The Garrison Standard: a one-year written guarantee on workmanship. If you’re weighing an ADU in Lake Highlands, call (903) 342-8977 for a free estimate and a straight answer on what your lot will actually allow.
Why Lake Highlands Homes Are Different
Lake Highlands is not a blank-slate suburb. The housing stock runs heavily to single-story brick ranch and traditional homes built between the 1950s and 1970s, with some 1980s infill mixed in. Most lots sit between a quarter and half an acre, which sounds generous until you factor in the mature oaks, utility easements, and the patchwork of zoning overlays that run through this part of Dallas. Slab foundations are standard, and a lot of these homes still have original cast iron sewer lines that are 60-plus years old and running directly under the trees you’d rather not touch.
The clay soil here expands and contracts through hot, humid summers and the occasional severe storm. That means any ADU in Lake Highlands needs foundation and drainage work tailored to the soil, not a generic slab detail pulled from a north Texas template. High-efficiency AC and storm-resistant design are not upgrades here; they’re baseline requirements for a structure that has to survive August and spring hail season. Homeowners who have already been through one bad contractor usually know exactly what we mean when we start talking about tree preservation rules and re-plumbing from the main sewer line before we ever talk about floor plans.
Our Main Lake Highlands Services
Most Lake Highlands homeowners call us about one of three projects: adding square footage to the main house, converting an attached garage into living space, or building a detached ADU in the backyard. Each one has its own page with specific pricing and permit details for Lake Highlands.
Room Addition Contractor in Lake Highlands
Room additions in Lake Highlands usually mean going out the back or side of a brick ranch, which brings foundation matching, roofline tying, and HOA or overlay review into play early. The clay soil here means your addition’s foundation has to be engineered to move with the existing slab, not against it. We price the job in writing before any work starts. For a full breakdown of what a Room Addition Contractor in Lake Highlands handles, see the dedicated page.
Garage Conversion Contractor in Lake Highlands
Garage conversions in Lake Highlands are popular because the garage is already under roof and on the slab, but the cast iron plumbing and electrical panel location often dictate how much of the conversion is straightforward and how much runs through the existing foundation. Permits in Dallas for garage conversions trigger habitability requirements: insulation, egress, and HVAC. We walk you through that before you commit. Details are on the Garage Conversion Contractor in Lake Highlands page.
ADU Builders in Lake Highlands
Detached ADUs in Lake Highlands face the strictest site constraints: tree preservation, setback variances, sewer line reroutes, and utility easements that may not be obvious from the curb. We work with prefab and modular platforms like Plant Prefab and Abodu, as well as conventional builds using James Hardie siding, so the construction method can match your lot and budget. See ADU Builders in Lake Highlands for pricing and build options.
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 Lake Highlands
We work with Plant Prefab, Abodu, James Hardie, and Tuff Shed across Lake Highlands, along with conventional framing and finish materials. Parts and panels are ordered to the site spec, not pulled from mismatched inventory. See our brands for the full list of platforms we’re fluent in.
Pricing for ADU Company in Lake Highlands, TX
| Service | Typical range in Lake Highlands |
|---|---|
| Backyard ADU (prefab, turnkey) | $180,000 – $260,000 |
| Backyard ADU (conventional build) | $220,000 – $320,000 |
| Garage conversion (attached, fully permitted) | $90,000 – $150,000 |
| Garage conversion (detached) | $110,000 – $175,000 |
| Room addition (primary suite, 400 sq ft) | $110,000 – $160,000 |
| Room addition (family room or home office) | $90,000 – $140,000 |
| Foundation work for ADU (clay soil, piers or slab) | $12,000 – $30,000 |
| Sewer line re-route for ADU utility tie-in | $6,000 – $15,000 |
| Tree protection and root-pruning compliance | $2,500 – $8,000 |
What pushes cost up in Lake Highlands is usually the lot, not the structure: a sewer line that has to be re-routed around mature oaks, a foundation detail that has to account for expansive clay, or an overlay that requires a setback variance from the city. You get the price in writing before we start, and that number does not move unless you change the scope.
Neighborhoods We Serve in Lake Highlands
We work across Lake Highlands from the established ranch-home streets to the 1980s infill pockets, wherever the lot size and zoning allow an ADU or addition. Response time for estimates in the area is typically within a few business days, depending on how many projects are already in permitting.
- L Streets
- Highlands West
- Lake Highlands Estates
- Merriman Park
- University Manor
Service Area – Cities Near Lake Highlands
Fielding ADU Dallas schedules and coordinates from the Dallas-Fort Worth office, and our crews serve Lake Highlands locally. We also take on ADU, garage conversion, and room addition work in nearby areas including Dallas, TX, Irving, TX, Mesquite, TX, and Grapevine, TX.
Serving Lake Highlands, TX - Our Local Coverage Area
We’re based in the Lake Highlands 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 Lake Highlands
We typically schedule a site visit within a few business days of your call. The visit includes a look at your lot, existing sewer and electrical, and any tree or easement constraints that will shape the project. Call (903) 342-8977 to schedule.
Many Lake Highlands subdivisions have deed restrictions or HOA covenants that run separately from city permits. We check both before you spend money on plans, and we’ll tell you in writing what requires approval and what doesn’t.
No. The price we put in writing before any work starts is the price on the final invoice, unless you change the scope. The Garrison Standard covers workmanship defects for 365 days; if something fails, we come back and make it right at no charge.
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 Lake Highlands Customers Say
"Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B."Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W."Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L.
