How to Find a Sewer Cleanout

A sewer cleanout is a capped pipe that gives plumbers direct access to your main sewer line. It's used for inspections, clearing blockages, and camera work. Knowing where yours is can save you time and money when you need emergency service — or when you're preparing to sell your home.

This guide walks you through how to find it, what it looks like, and what to do if your home doesn't have one.

What Does a Sewer Cleanout Look Like?

A cleanout is typically a short section of white, black, or green pipe — usually 3 to 4 inches in diameter — sticking a few inches out of the ground or flush with a concrete surface. It has a threaded cap on top, often with a square nut in the center that a wrench can turn.

• Usually white PVC or black ABS plastic (older homes may have cast iron)
• Round cap, 3–4 inches in diameter
• May be slightly above ground, flush with concrete, or have a green cover if installed in a lawn
• Sometimes has a rectangular access box around it at ground level

Where to Look Outside Your Home

The most common location for a sewer cleanout is outside, somewhere between your home's foundation and the street or sidewalk. Here's where to check:

1. Along the Side of the House

Walk along both sides of your home and look for a capped pipe near ground level, usually within a few feet of the foundation. This is the most common location in California homes.

2. Near the Front of the House

The main sewer line typically runs from the front of your home toward the street. Look in your front yard, often in a straight line between the front door area and the street.

3. In the Driveway or Near the Sidewalk

In many homes, the cleanout is located near the property line, close to where your sewer lateral connects to the city main. It may be flush with the concrete driveway or hidden under a small rectangular access cover.

4. Near a Bathroom or Kitchen Wall (Exterior)

Cleanouts are often placed directly outside of where your main plumbing stack is located inside the house — typically near a bathroom or kitchen on an exterior wall.

Where to Look Inside Your Home

Older homes — especially those built before the 1960s — sometimes have their cleanout access inside rather than outside. Check these locations:

• Basement or crawl space — look along the main drain pipe that runs horizontally near the floor
• Utility room or laundry area — near the floor drain or main stack
• Garage floor — sometimes a cleanout is cast into the concrete slab in the garage
• Behind a removable access panel — some cleanouts are behind panels in cabinets or walls near bathrooms

Use Your Home's Layout as a Clue

Your sewer lateral runs in a straight (or nearly straight) line from inside your home to the city sewer main under the street. You can often trace this path:

1. Find where your toilets and main drains are inside the house
2. Mentally draw a line from that point toward the street
3. Walk that line in your yard and look for a cleanout cap along it

Check Your Home Inspection Report

If you had a home inspection when you purchased your property, the report often notes the location of the sewer cleanout — and sometimes includes a photo. It's worth pulling out if you have it.

What If You Can't Find It?

Don't worry — this is common, especially in older homes. Cleanouts can become buried under landscaping, paved over, or hidden by time. A few options:

• Call a plumber — we can locate your cleanout using a camera or locating equipment
• Check permit records — your city or county building department may have records of where plumbing was installed
• Ask a neighbor — if homes in your neighborhood were built at the same time, your neighbor's cleanout location is likely similar to yours

Why It Matters

Knowing where your cleanout is matters most in two situations:

1. Emergency backups — when sewage backs up into your home, a plumber needs immediate access to the cleanout. Every minute counts.
2. Point-of-sale inspections — if you're selling your home in a district that requires a sewer inspection, we'll need to access the cleanout to run the camera. Knowing its location in advance speeds up the process.

Still Can't Find It? We Can Help.

If you've searched and still can't locate your cleanout, give us a call. We use camera and locating equipment to find it quickly — and if your home doesn't have one, we can install one at the same time we do your inspection.