Installing Bathroom in Basement

Plan & Design

Begin by determining the location of your new bathroom. Choosing a location close to the existing plumbing will minimize costs and simplify the installation process.

Obtain Permits

Contact your local building department to determine the necessary permits for adding a bathroom to your basement.


Hire a licensed plumber to handle the plumbing work, including connecting the water supply lines and drainage system.

Electrical Work

Consult a licensed electrician to handle the electrical work for your new bathroom. They will install the necessary wiring and outlets, including GFCI.


Proper ventilation is crucial in a bathroom to control humidity and prevent mold growth. Install an exhaust fan to remove moisture and odors.

Walls & Flooring

Choose moisture-resistant materials for the walls and flooring in your basement bathroom. Cement board or moisture-resistant drywall is recommended for the walls.

Fixtures & Finishing

Install the fixtures, including the toilet, sink, shower, and bathtub, according to your design plan. Connect the water supply lines.

Lighting & Accessories

Install appropriate lighting fixtures, to illuminate the bathroom. Consider adding additional features like a mirror, towel racks, and storage cabinets.

Final Inspections

Once the installation is complete, schedule a final inspection with the local building department.