What cleanout means
A cleanout is a capped opening in a drain line that gives access to clear a clog or run a camera.
Where it matters on a plumbing job
A clean, accessible cleanout turns a sewer call into a quick job; no cleanout means pulling a toilet or cutting one in. Price adding an outdoor cleanout as an option on every main line call.
What the model code says
- The code defines a cleanout as an access opening in the drainage system used to remove obstructions. (IRC 2021, Chapter 2)
- Horizontal drains in buildings need cleanouts at intervals of not more than 100 feet. (IRC 2021, Chapter 30)
- Cleanouts are the same size as the pipe they serve, though they need not be larger than 4 inches. (IRC 2021, Chapter 30)
Check which code edition your building department enforces for cleanout before you quote.
What it costs
Jobs that involve cleanout are priced in the sewer line cleaning cost guide: about $310 typical, usually $190 to $580. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Sewer line cleaning cost
- Licensing: Plumbing license rules by state
- Tools, templates and guides: Free plumbing resources
Sources: 2021 International Residential Code, Chapter 2, Definitions (ICC); 2021 International Residential Code, Chapter 30, Sanitary Drainage (ICC). Checked October 9, 2026.