Planning
Converting to One-Floor Living: Practical Guide
Updated June 2025 — Assessment, feasibility, and planning
Why One-Floor Living Matters
For people with limited mobility or stair-climbing difficulty, concentrating all daily living functions on one floor is often more practical, safer, and less expensive than installing a stair lift or elevator. If your home has a room that can be converted to a bedroom and a full bath on the main floor, this may be the most cost-effective path.
Feasibility Assessment: What Your Home Needs
For functional one-floor living, the main floor needs:
- A room large enough for a bed and wheelchair maneuvering (minimum 10’×10’; 12’×12’ preferred)
- A full bathroom (toilet + shower or tub) on the same floor — or space to add one
- Kitchen and main living areas already on the main floor (true for most single-story or split-level homes; may require planning in two-story homes)
- Step-free exterior entry on the main floor level
Common Conversion Scenarios
Scenario A: Main-Floor Den/Office Converted to Bedroom
If a half bath exists on the main floor, converting the den to a bedroom + expanding/adding an accessible full bath is often feasible. The bath addition/expansion is the major construction element — typically $10,000–$30,000 depending on whether plumbing exists nearby.
Scenario B: Garage Conversion
Converting an attached garage to a bedroom + accessible bath is a common and relatively affordable approach (garage slab is at grade level, eliminating entry steps). Typical cost: $15,000–$40,000 including insulation, HVAC, and accessible bath addition.
Scenario C: First-Floor Suite Addition
A ground-floor addition (bedroom + accessible bath) is the most expensive option but creates the most purpose-built space. Typical cost: $50,000–$150,000+ depending on size and market.
Permits Required
Any room-use change (converting a den to a bedroom) that involves plumbing, electrical work, or structural changes requires permits. Bedroom additions require building, electrical, and plumbing permits at minimum. Always use a licensed general contractor for this scope of work.