The complete bathroom addition guide
From the first layout sketch to the final inspection.
The planning library
Bathroom addition
planning guides.
Source-linked guidance for the decisions that shape a bathroom addition. Begin with the complete guide, then explore the details that apply to your home.
Build a complete addition budget
Separate construction scope, allowances and unknowns.
Find your permit jurisdiction
KCMO, KCK, Johnson County and city permit paths.
Gravity, ejector or macerator?
The drainage decision behind a basement bathroom.
Can a closet become a bathroom?
Assess space, access and utility routes together.
Plan a bathroom that fits
Use a layout checklist before buying fixtures.
Control water and moisture
Drainage, waterproofing and exhaust have different jobs.
Plan for easier daily use
Think beyond the curb to access and assistance.
Sequence the work
Decisions and inspections that determine the schedule.
Compare complete contractor quotes
A scope matrix that makes exclusions visible.
Ready to define the project? Compare the five addition options or use the free project planner.