A garage conversion costs $5,000 to $50,000+ depending on the room you’re creating, with national averages of $11,000 to $30,659 across four references.1234 A simple bedroom runs $5,000 to $17,000 (HomeGuide); a full apartment or in-law suite reaches $20,000 to $100,000+ (HomeGuide).2 Prices below are national averages* for 2026.
*National averages, not local quotes. Your price depends on garage size, room type, plumbing and electrical scope, permits, and finish level.
$16,460
average conversion, Angi
$11,000
average remodel, Fixr
$25 – $75
per sq ft, Angi
$300 – $1,000
permits, Angi
Quick math: a 440-sq-ft two-car garage at Angi’s $25 to $75 per square foot = $11,000 to $33,000, matching its own size table, our arithmetic.1 The averages disagree because they measure different scopes: Fixr’s $11,000 is a full remodel (floor coating, cabinets, finished walls — still a garage), while Angi’s $16,460 and This Old House’s $30,659 are true living-space conversions.134
Cost by room type
| Room | HomeGuide | Angi |
|---|---|---|
| Home office | $5,000 – $10,000 | ~$5,000 |
| Bedroom | $5,000 – $17,000 | ~$12,000 |
| Living room | $5,000 – $10,000 | — |
| Entertainment room | — | ~$7,500 |
| Home gym | $2,000 – $9,000 | — |
| Utility room / mudroom | $3,000 – $6,000 | — |
| Kitchen | $6,000 – $54,000 | — |
| Bedroom + bathroom suite | — | ~$25,000 |
| Apartment / ADU / in-law suite | $20,000 – $100,000+ | — |
The pattern: rooms without plumbing (office, gym, living room) stay under $10,000; add a bathroom or kitchen and the budget doubles or triples (HomeGuide, Angi).12
Cost by size
| Garage size | Sq ft | Conversion cost (Angi) |
|---|---|---|
| 1-car | 240 | $6,000 – $18,000 |
| 1-car large | 264 | $6,600 – $19,800 |
| 2-car compact | 384 | $9,600 – $28,800 |
| 2-car | 440 | $11,000 – $33,000 |
| 2-car large | 484 | $12,100 – $36,300 |
At $25 to $75 per square foot, size multiplies cleanly (Angi), our arithmetic check.1 HomeGuide’s per-square-foot band is wider — $50 to $200 for a living-space conversion — because it includes high-finish projects, our reading.2
Where the money goes
| Item | Angi | This Old House |
|---|---|---|
| Electrical | $1,000 – $3,000 | $1,112 – $7,228 |
| Plumbing | $1,500 – $4,000 | — |
| HVAC | $300 – $5,000 | — |
| Insulation | $500 – $2,000 | — |
| Windows | $500 – $2,000 | — |
| Flooring | $1,000 – $4,000 | — |
| Drywall | $1,000 – $3,000 | — |
| Permits | $300 – $1,000 | a few hundred to $1,000+ |
| Demolition + disposal | — | ~$1,979 + ~$370 |
| Floor leveling | — | $600 – $2,000 |
Electrical is the biggest single line because most garages need a full overhaul for living-space code (This Old House).4 Two conversion-specific surprises: the slab sits lower than the house and slopes toward the door, so leveling adds $600 to $2,000 (This Old House), and labor runs up to 60% of the total (Angi).14
Conversion tiers (This Old House)
| Tier | Cost | Scope |
|---|---|---|
| Basic | $4,000 – $12,000 | Insulation, drywall, flooring, simple electrical, minimal windows |
| Mid-range | $12,000 – $25,000 | Upgraded insulation and flooring, plumbing, windows, HVAC extension |
| High-end | $25,000 – $40,000 | Structural changes, high-end finishes, custom features |
| Luxury | $40,000 – $52,000+ | Premium materials, separate utilities |
Fixr’s conversion band ($20,000 to $75,000) maps onto the mid-to-luxury tiers; its $7,000 to $15,000 “full remodel” is a finished garage, not living space.34
Worked examples
Example 1 — home office, 1-car (240 sq ft). ~$5,000 (Angi): insulation, drywall, electrical, a window, no plumbing.1
Example 2 — bedroom, 2-car (440 sq ft). $5,000 to $17,000 (HomeGuide), ~$12,000 typical (Angi).12 Add a bathroom and it jumps to ~$25,000 (Angi).1
Example 3 — full in-law suite (ADU). $20,000 to $100,000+ (HomeGuide): bathroom, kitchen, HVAC, separate entrance, permits toward $1,000+ (This Old House).24
FAQ
Does a garage conversion add value? It adds living space cheaply compared with an addition, but Fixr warns it can lower resale value if you lose covered parking and don’t replace it, our judgment follows that caution.3
Do I need a permit? Almost always for living space — $300 to $1,000 (Angi), more for ADUs (This Old House).14
What’s the cheapest conversion? A gym at $2,000 to $9,000 or an office around $5,000 — no plumbing, minimal code requirements (HomeGuide, Angi).12
What surprises people? The floor: it sits low and slopes for drainage, so leveling adds $600 to $2,000 (This Old House).4
Conversion or addition? Conversions reuse the shell, so they run well under addition pricing per square foot, our judgment. See our basement finishing cost guide for the other big reclaim-space project.
DIY shopping: garage floor epoxy kits (plain link, no affiliate relationship) — if a full conversion isn’t in the budget, an epoxy floor is the DIY-first step toward a finished garage.
Sources
- Angi, How Much Does a Garage Conversion Cost? (2026 data, 953 projects).
- HomeGuide, How Much Does a Garage Conversion Cost? (2026).
- Fixr, Cost to Remodel a Garage
- This Old House, Garage Conversion Cost (2026).
Related guides
Building Permit Cost
Home Office Cost
Garage Remodeling Cost
Mother-in-Law Suite Cost
Guest House Cost
Cost to Build a Garage (2026 Guide)
Drywall Installation Cost
Home Gym Cost
Epoxy Floor Cost
Shed Cost
Basement Finishing Cost
Garage Door Installation Cost
Electrician Cost
All cost guides