When considering a basement bathroom addition, there are several key factors to keep in mind. Plumbing is a major component, as you'll need to connect to existing systems, which can vary in complexity and cost. Egress requirements are also crucial for safety and compliance, ensuring proper exits in case of emergencies. Additionally, the overall cost can fluctuate based on materials, labor, and design choices. It's essential to weigh these elements carefully to make an informed decision. Ask Improvi.ai for personalized guidance on how to navigate your basement bathroom project!