How Much Does a Garage Apartment Cost in Fort Worth, TX? (2026 Guide)

The Short Answer

In Fort Worth, a garage apartment typically costs between $38,000 and $280,000 depending on the type of project. Here's the quick breakdown:

• —Garage conversion: $38,000–$100,000
• —Above-garage apartment: $80,000–$180,000
• —Detached ADU (new construction): $100,000–$280,000

These aren't estimates pulled from national data — they're from 45+ projects we've built in Fort Worth since 2016. See all project types we build for more detail on each option.

What Drives the Cost

No two projects cost the same, but the variables that move the needle most are consistent.

Project type. A conversion costs less than new construction because the structure already exists. An above-garage build is middle ground — you're building new, but on top of an existing footprint. A detached ADU is full ground-up construction.

Existing conditions. Does your garage have electrical? Plumbing rough-in? Slab grade that allows drainage? The worse the starting conditions, the more work required before the finish phase begins.

Size. A 400 sq ft efficiency costs less than an 800 sq ft one-bedroom. Most Fort Worth garage conversions run 400–700 sq ft.

Finish level. Standard-grade LVP floors, stock cabinets, and basic fixtures run 15–20% less than mid-range. High-end stone counters and custom cabinetry push costs significantly higher.

Permit fees. Fort Worth permit fees for a typical ADU project run $800–$2,500 depending on scope. Factor this in from day one.

Fort Worth Garage Conversion Costs: Line by Line

A garage conversion involves taking an existing non-residential structure and making it habitable. The major cost drivers:

• —Plumbing: Running water and sewer connections to a garage with no plumbing is typically the single biggest line item — $8,000–$18,000 depending on distance from main lines.
• —Electrical: Upgrading or adding a subpanel and running new circuits: $4,000–$10,000.
• —HVAC: A mini-split system sized for the space: $3,500–$7,000 installed.
• —Egress: Fort Worth requires egress windows in sleeping areas. Adding them to an existing masonry wall: $1,500–$4,000 per window.
• —Insulation and drywall: $6,000–$12,000.
• —Kitchen: A basic functional kitchen runs $8,000–$15,000. A fully upgraded kitchen: $18,000–$28,000.
• —Bathroom: A full bath with shower: $10,000–$18,000.
• —Flooring, trim, paint: $4,000–$10,000.

Add those up and you're looking at $45,000–$95,000 for a well-built, code-compliant conversion in Fort Worth — before any structural repairs.

Above-Garage Apartment Costs in Fort Worth

Above-garage apartments add a full floor of living space above an existing or new garage. Additional cost factors include structural engineering ($3,000–$6,000), full floor framing ($18,000–$35,000), and an exterior staircase with landing ($4,000–$8,000).

Total range: $80,000–$180,000 in Fort Worth. Projects in Fairmount, Mistletoe Heights, and Arlington Heights tend to cluster in the $95,000–$145,000 range.

Detached ADU Costs

A detached ADU is full new construction. You're building a foundation, structure, roof, and all mechanicals from scratch. This is the most expensive option but gives you the most flexibility in size and design.

Cost range: $100,000–$280,000 in Fort Worth. Most projects land between $120,000 and $200,000.

The ROI Math

Fort Worth garage apartments rent for $1,100–$1,800/month depending on size, neighborhood, and finish level. At $1,400/month, a $95,000 conversion has a 6-year payback period — after which it generates roughly $16,800/year in passive income.

Properties with garage apartments also sell for more. Appraised value typically increases by $60,000–$120,000 over a property without one. Use our free cost calculator to estimate your specific project.

The Bottom Line

Garage apartments in Fort Worth cost real money — but they generate real returns. The key is knowing your project type, understanding what conditions you're starting with, and working with a builder who gives you honest numbers upfront. Schedule a free consultation and we'll walk your property and give you a realistic estimate.