







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Garage Conversion Contractor Across Cockrell Hill
Most Cockrell Hill homeowners we talk to assume an ADU means building something new in the backyard. The truth is, that old garage already sitting on your lot is often the fastest and least expensive path to a legal second unit. As a Garage Conversion Contractor serving Cockrell Hill, we scope these projects from the slab up, and the numbers usually surprise people in a good way. A full garage conversion ADU in Cockrell Hill typically runs $85,000 to $140,000, depending on whether you’re working with an attached or detached structure and how much of the existing framing you can reuse. Call (361) 204-4652 and we’ll walk your specific lot and garage before you commit to anything.

Cockrell Hill is a tight 0.7-square-mile city, and that changes how we approach every project. We know the local permit desk, the inspection cadence, and the drainage review quirks that catch out contractors who mostly work across the line in Dallas. When you call, a live person answers. That matters when you’re mid-build and need a straight answer about what happens next.
Why Lodgewick ADU Dallas Is Cockrell Hill’s Preferred Garage Conversion Contractor Company

We’re part of the Kingswell family of home-service companies, founded in 2010. Russ Delmar leads our Dallas-Fort Worth operation, and every Cockrell Hill garage conversion we build runs under The Kingswell Guarantee. That means a written price before any work starts, a real arrival window, a clean job site every day, and a written guarantee on the finished project. If something isn’t right within 365 days, we come back and make it right at no charge. That’s the 365-Day Done Right Promise, and it’s in writing on every single project.
Our crews work in Cockrell Hill regularly. They know the difference between the older stock near Cockrell Hill Road and the newer infill lots tucked behind Westmoreland Road. Every technician on your property is background-checked and uniformed, so you always know who’s walking your lot. And our familiarity with Cockrell Hill’s specific permit sequence, including the separate drainage review that Dallas projects don’t face, means fewer stalls once construction begins.
The Kingswell Way is how we run every build. Say the price before the work, show up in the window we gave you, leave the place cleaner than we found it, and put the guarantee in writing. No exceptions.
Garage Conversion ADU in Cockrell Hill
A Garage Conversion ADU in Cockrell Hill transforms an existing garage into a self-contained accessory dwelling unit with its own entrance, kitchen, bath, and sleeping area. Cockrell Hill homeowners choose this route when they want rental income, space for aging parents, or a private unit for adult children, and they want to avoid the cost of ground-up construction. Most attached garage conversions here run $85,000 to $120,000. Detached conversions, where we often need to run new utility lines across the lot and upgrade the existing slab, land between $110,000 and $140,000.
Attached Garage Conversions
Attached garages share walls, roof lines, and often the main electrical panel with the house. That proximity cuts costs on some trades and complicates others. We typically re-insulate the shared wall, add fire separation per Cockrell Hill code, and rebalance the HVAC load so the new unit doesn’t rob heat and air from the main house. Expect this to add one to two weeks to the build calendar.
Detached Garage Conversions
Detached garages give us full envelope control: we can reframe openings, re-slope slab edges, and run a dedicated subpanel without working around occupied rooms. The tradeoff is infrastructure. In Cockrell Hill’s fully landlocked lots, trenching new sewer and water lines from the main house to a detached garage often means cutting through an existing driveway or patio. We scope that cost during the initial walkthrough, not after permits are pulled.
Garage Apartment Conversion in Cockrell Hill
A Garage Apartment Conversion in Cockrell Hill is a specific type of ADU: a rental-ready unit built to apartment finish standards, with a full bath, functioning kitchen, separate address or unit designation where the city allows it, and its own meter or sub-metered utilities. Homeowners in Cockrell Hill lean this direction when the goal is monthly rental cash flow rather than family use. These builds typically run $95,000 to $140,000, with the higher end covering new utility laterals, sound insulation between units if the garage is attached, and upgraded windows.
Rental-Ready Builds
Rental units need details an owner-occupied conversion can skip: durable flooring, a dedicated laundry hookup (not a shared one), parking separation, and a locking utility closet so you’re not entering the tenant’s space to read a meter. We spec these from the first drawing set. Cockrell Hill’s small-town rental market stays tight, and a legal, permitted unit rents fast when the zoning paperwork is already done.
Owner-Use Apartments
If the plan is family, not tenants, we simplify the systems. A shared laundry in the main house, a wet bar instead of a full second stove, and interior door access from the main home can shave $8,000 to $15,000 off the build. We’ll show you both scopes and let you choose, with the cost difference in writing before you decide.

Trusted Brands We Service in Cockrell Hill
We work hands-on with established ADU materials and prefab systems, matching each Cockrell Hill lot to the right product. For garage conversions on tight lots where conventional framing would eat interior space, we’ve used Plant Prefab panels for their thinner wall assemblies. For storage-to-living transitions, Tuff Shed shells sometimes make a sensible structural base. And when exterior durability matters on a Cockrell Hill garage that’s sat exposed for decades, we typically spec James Hardie siding and trim, same brand we’ve matched on older Rosemont-area homes. Local parts availability for these brands in the Dallas-Fort Worth supply chain means we’re not waiting on freight when a mid-build fix is needed.
Common Garage Conversion Contractor Problems We See in Cockrell Hill Homes
- Clay sewer lines under old slabs. Cockrell Hill’s housing stock skews older, and 40-year-old clay lines under garage slabs are common. If you skip the initial sewer camera scope and we hit a collapsed line mid-build, Cockrell Hill requires the homeowner to repair it before the ADU can pass. Dallas would sometimes absorb that repair; Cockrell Hill does not. We scope the line before we quote, not after we start.
- Drainage review surprises. Homeowners assume Dallas stormwater credits apply. They don’t. Cockrell Hill has a separate drainage review for ADUs, and it can require unplanned French drains or dry wells once the permit drawings are already submitted. We budget for that review from day one.
- Roof snow/wind load mismatches. Framing to standard Dallas deflection limits will fail Cockrell Hill’s slightly stricter roof load note on the ADU checklist. We’ve seen truss spacing rework cost homeowners three weeks and $4,000 when a contractor framed too fast. Our drawings match Cockrell Hill’s checklist from the first submittal.
- Lot-coverage assumptions from Dallas. Cockrell Hill is a landlocked municipality where Dallas setback and lot-coverage rules don’t apply. That’s an advantage, but it also means a contractor who assumes Dallas code is working from the wrong sheet. We pull Cockrell Hill’s current zoning ordinance every time, because it changes the buildable footprint on nearly every lot in town.
Pricing for Garage Conversion Contractor in Cockrell Hill, TX
A straightforward attached garage conversion to a one-bedroom ADU in Cockrell Hill generally runs $85,000 to $120,000. Detached units run $110,000 to $140,000 because they need new utility lines, slab work, and often a dedicated subpanel. Rental-ready apartments sit at the high end of both ranges. What moves the number: the condition of your existing slab, the sewer line condition under it, whether the garage shares a wall with the house, and how much of the original framing can be reused. You’ll get a written, line-item price before any work starts, and it won’t change at the door. Call (361) 204-4652 for a free estimate on your specific garage.
The one local factor unique to Cockrell Hill worth repeating: those 0.7 square miles are fully surrounded by Dallas. That means garage conversions are often the only practical way to add an ADU without triggering Dallas setback or lot-coverage rules that no longer apply inside city limits. It’s a specific, locational advantage for Cockrell Hill homeowners, and we build around it every time.
We Also Serve Cities Near Cockrell Hill
While this page focuses on Garage Conversion Contractor in Cockrell Hill, our crews also serve homeowners in Dallas, Plano, Garland, and Richardson. The permitting and review process differs across the metro, and we adjust our scope and drawings to match each city’s checklist. If you’re just outside Cockrell Hill, call (361) 204-4652 and we’ll let you know exactly which city applies and what changes.
Serving Cockrell Hill, TX - Our Local Coverage Area
We’re based in the Cockrell Hill 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 Garage Conversion Contractor in Cockrell Hill
A Cockrell Hill garage conversion ADU typically runs $85,000 to $140,000 depending on whether the garage is attached or detached. That’s comparable to Dallas pricing for similar scopes, but Cockrell Hill’s separate drainage review can add $3,000 to $8,000 in unplanned French drains or dry wells that Dallas projects don’t always face. We price that review into your written quote from the start. Call (361) 204-4652 for an exact number.
No separate building permit is required for the garage conversion itself if you already have one for the ADU. What Cockrell Hill does require is a separate drainage review and approval, plus the standard electrical, plumbing, and mechanical permits tied to the project. We pull all of them, in the correct order, and we’ll walk you through the inspection sequence before we start.
Most Cockrell Hill garage conversion ADUs take 12 to 18 weeks from the first day of construction, not including the permitting period. Attached conversions run 12 to 15 weeks; detached conversions run 15 to 18 weeks because of utility trenching and separate structure work. The Cockrell Hill drainage review adds about two weeks on the front end. We’ll give you a calendar at contract signing and we’ll hit it. Call (361) 204-4652 to discuss your timeline.
No. Cockrell Hill does not require a separate driveway entrance for a garage conversion ADU on a single-family lot. The unit does need its own exterior entrance door, which we can place on any accessible side of the structure. Parking for the ADU tenant can remain in the existing driveway or on the street, subject to Cockrell Hill’s parking codes, which we’ll confirm during scoping.
The two big mid-build cost triggers in Cockrell Hill are sewer line failures discovered under the slab and drainage review requirements that surface after permitting starts. We catch both by running a sewer camera scope before quoting and by pricing the drainage review into the initial estimate. Framing rework for Cockrell Hill’s roof load note is a third trigger we avoid by drawing to that standard from the first submittal. You’ll have a written price and a written guarantee before we start. Call (361) 204-4652 for a free estimate.
If you’ve been burned by a contractor who changed the price at the door or vanished after the final check, we understand why you’re reading every word here. Russ Delmar and the Lodgewick ADU Dallas team put the price, the schedule, and the guarantee in writing before a single nail is driven. Call (361) 204-4652 and tell us about your garage. We’ll tell you what’s possible, what it costs, and what happens next.
Written by Russ Delmar, Owner at Lodgewick ADU Dallas, serving Cockrell Hill and the Dallas-Fort Worth metro.




