Options by budget
| Option | What it includes | Typical Houston cost |
|---|---|---|
| Safety visit | Grab bars, lighting, lever handles | $500–$2,500 |
| Accessible bathroom | Curbless shower, bench, comfort-height toilet | $25,000–$50,000 |
| Garage to in-law suite | Bedroom, bath, kitchenette, own entrance | $80,000–$160,000 |
| First-floor suite addition | Bedroom, bath and closet | $150,000+ |
Details that matter
- No-step entry to the house and the shower
- Doorways about 36 inches wide for walkers and wheelchairs
- Night lighting from bed to bathroom
- Blocking in bathroom walls for grab bars later
- Non-slip flooring with no thresholds to trip on
- A separate entrance and kitchenette for independence
Common questions
Is a garage conversion or an addition better for an in-law suite?
A garage conversion is usually faster and cheaper because the slab, walls and roof already exist. An addition keeps your garage and can be designed exactly to fit.
Can a converted garage legally be a bedroom?
Yes, if it meets code for a sleeping room, including an emergency escape opening, heating and cooling, and smoke alarms, and your deed restrictions allow it.
Sources
This guide is general information, not legal, tax or financial advice. Rules change; confirm details with the agency named in the sources or a licensed professional.