Cost to Garage Conversion in Denver, CO (2026)
If you’re budgeting a garage conversion in Denver, most projects run $10,473-$31,420, 5% above the $20,000 national average. What moves that number most is usually one thing: HVAC - Mini-Split vs. Duct Extension. On its own it can swing the cost by $2,000-$5,000 for mini-split; $1,500-$3,500 to extend existing ductwork, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Skip the full bathroom if you don't need rental income - adding plumbing adds $5,000-$12,000 to the project. A powder room (half bath) is a good middle ground at $3,000-$6,000.
In the Mountain West (where Denver sits): Higher costs in resort and metro markets; extreme temperature swings demand better HVAC.
$10,473-$31,420 in Denver
5% above the national average · 1.05x cost multiplier
Expect to pay $10,473-$31,420 for a garage conversion in Denver, about 5% above the national benchmark. The Mountain West region's contractor market and material costs account for most of this difference. The detailed breakdown below shows how budget, mid-range, and premium projects compare at Denver prices.
Cost Breakdown in Denver
| Line Item | Low | Mid | High |
|---|---|---|---|
| Materials | $3,710 | $7,420 | $13,780 |
| Labor | $6,230 | $11,422 | $24,920 |
| Permits | $530 | $1,060 | $1,590 |
| Total | $10,470+5% vs. national avg | $20,962+5% vs. national avg | $41,880+5% vs. national avg |
Budget
Basic single-car garage conversion to a bedroom or home office. Insulation, drywall, flooring (LVP), new window, HVAC extension to existing system, and electrical outlets. No plumbing, no structural changes. Functional but not luxury.
Mid-Range
Standard single-car garage to livable space (bedroom, office, or studio). Includes spray foam insulation, drywall, hardwood or tile flooring, HVAC mini-split for independent climate control, upgraded electrical, new exterior door, windows, and finishing work matching main house.
Premium
Double-car garage conversion to a full ADU, guest suite, or home gym with full bathroom. Includes plumbing rough-in and fixtures, kitchenette, mini-split HVAC, premium finishes matching the main home, proper egress windows, and full permit compliance for legal habitable space.
Material Options
Material prices below are national averages; availability in Denver may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| Basic Office/Bedroom Conversion (No Plumbing) | $25-$50/sq ft | Home offices, gyms, game rooms, non-rentable guest spacesLowest cost, quickest completion, simpler permits |
| Full ADU Conversion (with Bathroom and Kitchenette) | $75-$125/sq ft | Homeowners wanting rental income or multi-generational livingLegal rentable unit generates income, adds significant home value |
| Single-Car Garage Studio | $40-$80/sq ft | Home offices, artist studios, small guest roomsGood balance of functionality and cost, manageable permit process |
| Two-Car Garage to Living Space | $35-$65/sq ft | Families needing a bonus room, larger ADUs, home gym + office combinationsMore square footage per dollar, room for multiple functions |
| Detached Garage Conversion | $50-$100/sq ft | Rental ADUs, in-law suites, teen suitesMore privacy, often most ADU-permissible option |
Other Projects in Denver
Denver Estimate
Typical Range
$10,473-$31,420
vs. National Average
5% above national
Cost Multiplier
1.05x
This 1.05x estimate prices Denver labor from BLS Occupational Employment and Wage Statistics (May 2025) and applies a lighter regional adjustment to materials and permits, which vary less by metro than labor does. Actual bids vary by contractor, project scope, and timing.
See national average costs →