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.
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.
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.
Choose moisture-resistant materials for the walls and flooring in your basement bathroom. Cement board or moisture-resistant drywall is recommended for the walls.
Install the fixtures, including the toilet, sink, shower, and bathtub, according to your design plan. Connect the water supply lines.
Install appropriate lighting fixtures, to illuminate the bathroom. Consider adding additional features like a mirror, towel racks, and storage cabinets.
Once the installation is complete, schedule a final inspection with the local building department.