Why Garage Conversions Appeal to Homeowners
The exterior shell already exists, which can reduce framing, roofing, and foundation costs compared with a detached backyard cottage. Garage conversions are especially attractive for homeowners who have oversized garages, detached garages, alley access, or parking alternatives that make losing garage space acceptable.
Typical Cost Range
A Denver metro garage conversion often lands between $50,000 and $150,000. Budget depends on the garage condition, plumbing distance, electrical capacity, insulation, slab condition, HVAC approach, ceiling height, windows, fire separation, and finish level.
Common Feasibility Issues
The biggest surprises are usually structural and code-related: insufficient ceiling height, cracked or uninsulated slabs, poor drainage, no sewer route, lack of egress, and walls that need fire-rated assemblies. Attached garages can have different separation requirements than detached structures.
Rental and Family-Housing Use Cases
Garage ADUs can work well as compact long-term rentals, caregiver suites, adult-child housing, or private work-live space. They tend to have less privacy and outdoor space than detached cottages, but the lower project cost can make the return profile attractive.
How to Use This Guide
Start with the ADU quiz so we can capture your property type, garage condition, desired use, and budget. From there, you can decide whether to speak with a designer, builder, lender, or code professional first.
Start with the ADU quiz. It captures your property type, goals, budget range, and readiness questions so the next step is focused. Take the ADU readiness quiz.