Sewer cleanout installation in Knoxville, TN adds a two-way access fitting to the sewer lateral near the foundation, with risers up to caps at grade, so the line can be cleared or camera-inspected in either direction. It turns a main line call that means pulling a toilet into one handled from outside.
Updated October 2026
Why a Cleanout Pays for Itself
Published Knoxville drain cleaning data shows what access is worth: a main line cleared through an outside cleanout runs about $180, through a roof vent about $270, and around $400 when a toilet has to be pulled. A cleanout is a one-time job that moves every future call to the cheapest option.
It also makes a camera inspection quick and clean, and gives jetting a direct path into the line. Houses built before cleanouts were standard, and those whose cleanout was buried or broken, are the usual candidates.

What a Cleanout Costs Depends On
A cleanout is priced by how deep the lateral runs and what sits above it.
A deeper lateral means a deeper pit.
Lawn is easiest; concrete or pavers add work.
Fragile pipe at the cut may need a longer repair.
Freeing a seized plug or adding an access panel.
A plumbing permit typically runs $100 to $250 where required.
Two-Way Outdoor Cleanout
A two-way cleanout is a fitting spliced into the lateral just outside the foundation, with one opening pointing toward the house and one toward the street, so a cable or camera can go either direction from the same spot. We locate the lateral, dig a small pit, cut in the fitting with shielded couplings, bring risers up to grade with screw caps, and backfill. Done right, it disappears into the lawn until the day it is needed, and a plumber reaches the line in minutes instead of an hour.
Indoor Cleanout Access
Many houses have a cleanout inside, at the base of a stack in the basement or crawlspace, that has been painted over, boxed in behind drywall, or seized with a cast iron plug that will not turn. We free or replace the plug and add an access panel where a wall hides it. An indoor cleanout is useful for clearing branch lines inside the house, but it is no substitute for an outdoor one on the main line, because opening it during a backup can flood the room it is in.
Cleanout Cap and Riser Repair
Outdoor cleanouts get hit by mowers, crushed by cars and buried under landscaping. A cracked riser lets soil and groundwater into the sewer and gives roots a way in; a missing cap lets debris fall straight into the line. We dig down to sound pipe, replace the riser and cap, and set the top flush with the ground, or in a small protective box where it sits in a driveway. It is a small repair that prevents a much larger one down the line.
What a Cleanout Installation Includes
- Lateral located and marked
- Utility locates before digging
- Two-way fitting cut in with shielded couplings
- Risers brought up to grade
- Screw caps set flush or in a box
- Line camera-checked through the new cleanout
- Pit backfilled and lawn restored
Older Knoxville Laterals and the Case for a Cleanout

No cleanout outside? Add one before the next backup.
(865) 344-9122How a Cleanout Installation Runs
- 1
Locate
Lateral found and depth marked.
- 2
Dig
Small pit opened at the foundation.
- 3
Cut in
Two-way fitting installed with shielded couplings.
- 4
Risers and caps
Brought to grade and capped.
- 5
Test and restore
Camera run, backfill, lawn restored.
Sewer Cleanout Installation Questions From Knoxville Homeowners
How do I know if I have a sewer cleanout?
Look for a capped pipe near the foundation or along the line's route; we can locate one that's buried.
Is a cleanout required?
Newer homes are built with them; older homes often lack one or have it buried.
How deep is the dig?
It depends on the lateral's depth, usually a few feet.
Can a cleanout go in a driveway?
Yes, inside a traffic-rated box that protects the cap.
Will a cleanout stop clogs?
No, but it makes clearing and inspecting them faster and cheaper.
Can one be added during another repair?
Yes, it is easiest during sewer repair or replacement.
Other Drains & Sewer Jobs We Handle
Cast Iron Drain Replacement
Cast iron stack replacement and under-slab building drain.
More on cast iron drain replacementSewer Ejector Pump Service
Basement bathroom ejector and grinder pump.
Sewer Ejector Pump Service in KnoxvilleNo cleanout at your house?
Call to add one before the next backup.
