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Garage Conversion Cost - One Fixed Price, Permits Handled

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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A single-story rear room addition with tall windows and a new patio
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How Much Does Garage Conversion Cost in Dallas?

A garage conversion in Dallas typically costs $30,000 to $80,000 in 2026, with most single-car conversions landing between $35,000 and $55,000. The final number depends on whether you’re adding a bathroom, a kitchenette, new HVAC runs, or just framing out a finished bonus room. A straight conversion without plumbing runs on the lower end; a full apartment-style setup with a bath and kitchen pushes toward the top of that range.

This guide breaks down exactly where the money goes, what Dallas-specific factors move the needle, and how to avoid the pricing games so many homeowners get burned by. If you want a written number for your specific garage, call Penhallow Remodeling Dallas at (940) 204-5368 for a free estimate.

Key Takeaways

  • Dallas garage conversions run $30,000 – $80,000 in 2026; most land in the $35,000 – $55,000 band.
  • Adding plumbing for a bathroom or kitchenette is the single biggest cost driver, often adding $10,000 – $20,000.
  • Permits in Dallas typically cost $1,500 – $4,500 depending on scope, and inspections add time and some cost.
  • You’ll get a written price from Penhallow before any work starts. No verbal ballpark, no change order surprises.
  • Every Penhallow conversion carries the 365-Day Done Right Promise in writing.
A wide opening with a new beam where the kitchen wall was removed

Garage Conversion Cost Breakdown (2026)

Here’s how a typical Dallas garage conversion budget breaks down by line item. These are real market ranges based on what we see across Dallas neighborhoods like Lake Highlands, Casa View, Oak Cliff, and North Dallas:

Line Item Low End High End What It Covers
Design & architectural drawings $1,500 $4,500 Plans for permit submission, layout, electrical and structural specs
City of Dallas permits $1,500 $4,500 Building permit, electrical, mechanical, plumbing (if added)
Demolition & garage door removal $800 $2,500 Removing the door, tracks, opener, and any built-in shelving
Slab prep & leveling $1,000 $4,000 Grinding, patching, moisture barrier, self-leveling compound as needed
Framing & drywall $6,000 $14,000 Interior walls, ceiling work, insulation, drywall hang and finish
Electrical $3,000 $8,000 New circuits, subpanel if needed, outlets, lighting, fixture installation
HVAC tie-in or mini-split $3,500 $9,000 Ducted extension from main system, or a ductless mini-split unit
Flooring $2,500 $7,000 LVP, engineered hardwood, or tile over the existing slab
Windows & exterior wall $2,000 $8,000 Replacing the garage door opening with a wall, adding proper egress windows
Plumbing (bathroom or kitchenette) $8,000 $18,000 Supply and drain lines, fixtures, water heater tie-in, venting
Bathroom buildout $6,000 $15,000 Shower or tub, vanity, toilet, tile, ventilation fan
Kitchenette $4,000 $12,000 Counter, sink, cabinets, small refrigerator hookup
Finishes & trim $2,500 $7,000 Baseboards, door casings, interior doors, paint
Insulation upgrade $1,500 $4,500 Spray foam or batt insulation in walls and ceiling for comfort
Typical total $30,000 $80,000 Most Dallas jobs: $35,000 – $55,000 depending on scope

What drives the number up or down more than anything else is whether you add plumbing. A dry conversion, meaning no bathroom or sink, is a straightforward framing, electrical, and finish job. Once you cut into that slab to run drain lines, the price climbs fast. Dallas slab foundations are notorious for post-tension cables, which means any concrete cutting has to be located and mapped first, a step that adds both cost and care.

The second biggest driver is HVAC. If your existing system has capacity leftover, a ducted tie-in might run $3,500 – $5,500. If it doesn’t, a mini-split system in the $6,000 – $9,000 range is cleaner and more efficient than forcing an undersized main unit to work harder across a Dallas summer.

Third is the garage door opening itself. Some homeowners want it filled in with a full stud wall and brick veneer to match the house. Others keep a glass door or French doors. Brick veneer matching runs $2,000 – $5,000 more than a standard framed wall with siding or HardiePlank, but it looks like the garage was never there.

We also want to be straight about the hidden costs other contractors won’t mention until the change order lands. Dallas requires that a converted garage meet the same egress, ceiling height, and ventilation standards as any other living space. Older garages built before current code sometimes need ceiling reinforcement or additional clearance work. Penhallow puts all of this in the written price up front, because The Kingswell Way is simple: say the price before the work. Show up in the window we gave. Leave the place cleaner than we found it.

What Affects Garage Conversion Pricing in Dallas

  • Slab condition and foundation work. Dallas sits on expansive clay soil that shifts with rain and drought. We regularly see garage slabs that have settled an inch or more, especially in older neighborhoods like Casa View and Mesquite-adjacent east Dallas. If a slab needs grinding, leveling compound, or in rare cases piering, that adds $1,500 – $6,000 before we even start framing.
  • Post-tension cable locating. Many Dallas homes built since the 1970s have post-tension slabs. Any plumbing trench or anchor cut requires cable locating with ground-penetrating radar. It’s not optional and it’s not cheap, but it’s the difference between a clean conversion and a structural headache.
  • Plumbing scope. A half bath costs $6,000 – $10,000. A full bath with a tiled shower costs $10,000 – $15,000. A kitchenette with a sink, cabinets, and a small fridge adds $4,000 – $12,000. Each fixture means more slab cutting, more venting, and more permit review time.
  • HVAC strategy. Extending existing ductwork works when the main unit has capacity. In a Dallas August, an undersized system runs constantly and never cools the converted space. We’ll tell you honestly if a mini-split is the smarter move, even though it costs a little more up front.
  • Ceiling height and roof structure. Most Dallas garages clear 8 to 9 feet with no problem. But some older homes have low ceilings or odd roof framing that needs modification. If the converted space doesn’t meet the 7-foot minimum ceiling height code, you’ll need structural work, and that pushes the budget.
  • Finish level. Standard LVP flooring, painted drywall, and builder-grade fixtures land on the lower end. Engineered hardwood, Cambria quartz countertops in the kitchenette, custom cabinet lines like KraftMaid or Wellborn, and tile shower surrounds push the number toward $65,000 – $80,000. The materials matter because they should outlast the guarantee, not just look good at turnover.
A garage converted into a guest room and home office

How to Save on Garage Conversion

Saving money on a garage conversion doesn’t mean hiring the cheapest crew that might not show up. It means making choices that reduce labor and material costs without reducing the quality of what you live with every day.

Skip the plumbing. This is the single biggest lever you can pull. A dry conversion as a home office, playroom, or media room avoids the slab cutting, the venting, the bathroom buildout, and a chunk of permit fees. You can always add plumbing later, though it will cost a little more to do it as a phase two because the drywall has to come back down.

Keep the garage door opening as-is. Instead of bricking over the opening, consider a full-glass garage door or a set of insulated French doors. It looks intentional, brings in light, and saves $3,000 – $6,000 in wall framing and exterior matching.

Choose a mini-split over ducted HVAC. In many Dallas homes, the main unit simply doesn’t have the capacity to push conditioned air through new ductwork without shortening its life. A ductless mini-split is quieter, more efficient for a single room, and often cheaper to install than a full ducted tie-in.

Use the existing slab as your floor. If the slab is in good shape, a polished concrete floor or an LVP floating floor over an underlayment can look great and save $2,000 – $4,000 versus tile or engineered hardwood.

And the biggest money-saver of all: get a written price before any work starts. Change orders are where contractors make their profit. Penhallow puts the number on paper before the first tool comes off the truck, and that number is the number on the invoice. Call (940) 204-5368 for a free estimate with no obligation.

FAQs – Garage Conversion Cost

How much does a garage conversion cost in Dallas in 2026?

A garage conversion in Dallas costs $30,000 – $80,000 in 2026. The average project lands between $35,000 and $55,000 depending on whether you add a bathroom, kitchenette, and HVAC. Call (940) 204-5368 for a free written estimate.

Is it cheaper to convert a garage or build an addition?

Converting a garage is almost always cheaper, running $30,000 – $80,000 compared to $45,000 – $130,000 for a comparable home addition. The garage already has a roof, slab, and three walls, which saves you the cost of foundation work and structural framing from scratch. For a deeper look at our process, see our Garage Conversion in Dallas page.

Does a garage conversion add value in Dallas?

A well-executed garage conversion adds usable square footage, which Dallas appraisers value significantly. Most homeowners recover a meaningful portion of the $30,000 – $80,000 investment in increased home value, especially in areas like Lakewood and East Dallas where square footage per dollar is high. The key is doing it to code, with permits, so the square footage counts on a future appraisal.

Can you convert a garage without a permit in Dallas?

No, and you shouldn’t try. Dallas enforces building permits for garage conversions, and unpermitted work creates real problems when you sell, refinance, or file an insurance claim. The permit cost is typically $1,500 – $4,500, and it’s a small price for work that actually counts as living space.

How long does a garage conversion take in Dallas?

A typical Dallas garage conversion takes 6 to 12 weeks. Dry conversions without plumbing finish faster, often in 6 – 8 weeks. Full conversions with a bathroom and kitchenette run 10 – 12 weeks because of slab cutting, plumbing inspection, and tile work. Penhallow gives you a written schedule along with the written price, so you know the window before we start.

What’s the cheapest way to convert a garage?

The cheapest route is a dry conversion to a bedroom, office, or playroom: no plumbing, no kitchenette, basic finishes. That can land around $30,000 – $40,000. Use an LVP floor over the existing slab and keep the garage opening as French doors or a glass door to avoid exterior masonry costs. For an exact number on your space, call (940) 204-5368 for a free estimate.

Why Dallas Homeowners Choose Penhallow for Garage Conversions

Trevor Nash has seen too many Dallas homeowners stuck with a half-finished garage, a contractor who stopped answering, or a number that doubled after demo day. That’s why Penhallow Remodeling operates under The Kingswell Way, established in 2004: a written price before any work starts, a defined arrival window, a clean job site, and a written guarantee on every project.

Every garage conversion includes the 365-Day Done Right Promise. If something fails inside that guarantee period, we come back and fix it at no charge. If a repair fails, the second visit is free too. No service call fee, no re-inspection charge, no fine print.

Our technicians are background-checked and arrive in uniform. A live person answers the phone 24/7, not a voicemail prompt. And the materials behind the work, like James Hardie siding and KraftMaid or Wellborn cabinets where a kitchenette is involved, are chosen because they outlast the guarantee, not just because they look good on day one.

Pricing reflects the Dallas market as of 2026. Penhallow Remodeling Dallas offers free estimates – call (940) 204-5368.

Written by Trevor Nash, Owner at Penhallow Remodeling Dallas, serving Dallas homeowners with written, guaranteed pricing.

What Our Customers Say

★★★★★ 5.0 from 5+ reviews

"Kitchen and dining room opened up into one space. They were honest about which wall could come down and which couldn't, no sugarcoating. Dust was kept way down with plastic everywhere."

- Oscar Benitez

"Full home refresh before we sold. They were straight about what was worth doing and what wasn't to get our money back. On time, on budget, and it sold in a week."

- Monica Vaughn

"We'd been burned by a contractor before who disappeared halfway. Penhallow finished on time and stood behind everything. The written price gave me peace of mind the whole way."

- Simone Clarke

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