Planning a bathroom – sizes and accessibility
Turning circle, toilet clearances, shower sizes and ADA-inspired guidance for home bathrooms.
Reading time about 4 minutes
Sizes to start with
The IRC requires 15 in from the toilet centerline to walls and 21 in clear in front. For accessibility, ADA guidance is a useful reference even in private homes.
Frequently asked questions
What is the smallest shower allowed?
The IRC sets a minimum of 900 sq in (30 × 30 in) with at least 30 in in each direction.
Codes and zoning vary by state, county and city. Always check with your local building department and HOA before you build.