How to Locate Your Home’s Sewer Cleanout Access

Finding your home’s sewer cleanout access point isn’t just a homeowner convenience—it’s often the first step in diagnosing persistent clogs and preventing minor plumbing issues from turning into expensive repairs. The cleanout is typically a capped opening that gives plumbers a direct route to inspect or clear a blocked main drain line.

Because building layouts vary, the key is to narrow down where your main drain line runs and then look for the most likely entry point. Start with what you know about your plumbing system, then use visual clues outside and inside your home.