Drywall a Garage: 2026 Cost Guide
1-Car, 2-Car & Conversion Pricing
Garage drywall has unique code requirements that most cost guides skip over. The wall between your garage and living space must meet fire separation requirements per IRC, using the wrong board type puts your family at risk and won't pass inspection. Here's what the code requires and exactly what it costs.
Garage Drywall Cost by Size and Use
| Garage Size | Approx Area | Basic (Level 2) | Habitable (Level 4) | Notes |
|---|---|---|---|---|
| 1-car (10×20 ft) | ~500 sqft walls | $700–$1,800 | $1,500–$3,500 | Single wall to living space |
| 2-car (20×20 ft) | ~900 sqft walls | $1,350–$3,150 | $3,000–$8,000 | Most common project |
| 3-car (30×20 ft) | ~1,300 sqft walls | $1,950–$4,550 | $4,500–$11,000 | Plus ceiling if habitable above |
| 2-car with ceiling | ~1,300 sqft total | $2,400–$5,200 | $4,500–$10,000 | Required if living space above |
Fire Code Requirements: What the IRC Actually Says
Basic Storage vs Habitable Conversion: What Changes
| Factor | Basic Garage (storage/workshop) | Habitable Conversion (gym/office) |
|---|---|---|
| Drywall type | Type X on house wall; standard elsewhere | Type X on house wall + moisture-resistant in some areas |
| Finish level | Level 2 (paint over basic texture) | Level 4 (residential standard) |
| Insulation | Optional | Required for thermal comfort and energy code |
| Electrical | Existing outlets usually sufficient | New circuits, additional outlets, GFCI required |
| Permit required? | Usually not for cosmetic drywall | Yes, change of occupancy classification |
| Ceiling drywall | Optional (often exposed) | Required if living space above; recommended for all habitable spaces |
DIY Feasibility: Garages Are the Best Starter Project
Garages are the most forgiving drywall project for DIYers. Simpler geometry (large open walls, few windows), tolerance for less-than-perfect finishing at Level 2, and the ability to take time between stages makes this ideal for a first project.
DIY Cost (2-car garage)
- • Type X 5/8" sheets (28): ~$560–$670
- • Standard sheets for non-fire walls (10): ~$120–$150
- • Joint compound (4 buckets): ~$60–$100
- • Tape, screws, corner bead: ~$40–$60
- • Drywall lift rental: ~$80 (2 days)
- • Total DIY: ~$860–$1,060
Professional Cost (2-car garage)
- • Labour (hang + Level 2 finish): ~$900–$2,100
- • Materials (contractor supplied): ~$650–$1,050
- • Total professional: ~$1,550–$3,150
- • ,
- • DIY saving: ~$700–$2,100
- • Skill level required: Moderate
Frequently Asked Questions
How much does it cost to drywall a 2-car garage?
A standard 2-car garage (20×20 ft) costs $1,350–$3,150 for basic drywall (Level 2 finish, fire protection only). For a full habitable conversion with Level 4 finish and insulation, expect $3,000–$8,000. The wide range reflects whether you're doing basic fire separation or a full workshop/gym conversion.
What type of drywall is required in a garage?
Per IRC Section R302.6, the wall between an attached garage and living space must have at least 1/2-inch Type X (fire-rated) drywall. The garage-side ceiling must also be fire-rated if there's habitable space above. Type X 5/8-inch sheets cost $18–$24 each. Other garage walls (not adjacent to living space) can use standard drywall.
Can I drywall a garage myself?
Yes, garage drywall is one of the best DIY projects. Simple geometry, tolerance for Level 2 finish (vs Level 4 in living rooms), and wide-open working space make it manageable. Rent a drywall lift ($40–$80/day) for the ceiling. Budget a full weekend for hanging; allow 3–5 days total with drying time for finishing.