I went through this last year, so I can share how it played out for us. We remodeled our basement bathroom during a larger renovation, and I kept checking different contractors approaches because the plumbing lines in our house sit fairly deep. The crew we hired worked from basement bathroom remodel , and what helped most was how they explained the difference between simply adding a bathroom and doing it in a way that actually counts during appraisal. For example, our basement had enough ceiling height and good framing, but we needed a proper venting setup and a full shower for it to be considered a true full bath.

In terms of value: we didnt sell yet, but two local realtors gave us informal estimates afterward, and both said finishing a basement bath made the space feel more usable, which bumps buyer interest quite a bit. What I personally noticed is that hosting guests became easierpeople treat the basement as a real living space now instead of an afterthought. Just be prepared for some concrete cutting if your drains arent in the right spot; that part surprised me more than anything else.