Sewer Scope Inspection Checklist: What the Camera Should Document
A sewer scope is one of the highest-value add-ons in residential inspection because the failure it finds is invisible, expensive, and not covered by insurance. A lateral replacement can run five figures once it crosses a sidewalk or a street. This checklist covers what the camera needs to capture and how to describe findings without overstating them.
Who orders this
Buyers of any home over roughly 25 years old, any home with mature trees near the lateral, and any home on clay or Orangeburg pipe. Increasingly recommended as standard on all resale transactions rather than as an upsell.
Access and Setup
Where the camera enters determines what can be seen. Document the access point, because a scope from the wrong opening can miss the entire problem section.
- Access point used — exterior cleanout, interior cleanout, or pulled toilet
- Reason for the access choice if a cleanout was not available
- Whether the line was scoped from the house toward the main, or the reverse
- Total footage run and where the camera stopped
- Reason for any stoppage — blockage, transition, or camera limit
- Locator readings marking depth and position of significant findings
- Confirmation that water was run during the scope to show flow behavior
Pipe Material and Condition
Material sets the expected failure mode and remaining life. Identify every material and every transition point.
- Material at the house connection (cast iron, ABS, PVC, clay, Orangeburg)
- Material changes along the run and the condition at each transition
- Orangeburg (bituminized fiber) present — deforms and collapses, generally end-of-life
- Clay tile joints and their condition
- Cast iron scaling, channeling, or rust-through at the invert
- Prior repairs, spot liners, or full-length liner present
- Evidence of a previously abandoned line or dual laterals
Defects to Capture on Video
Each of these should be recorded with footage marked, not just described in the summary. The video is the deliverable a contractor will bid from.
- Root intrusion — location, footage, and whether roots are hairline or mass
- Bellies (low spots holding standing water) with estimated depth and length
- Offset joints and the degree of separation
- Cracks — longitudinal, circumferential, or spiral
- Holes, voids, or missing pipe sections with visible soil
- Collapse or deformation, including egg-shaping in Orangeburg
- Grease, scale, or debris accumulation and estimated percent of flow restricted
- Foreign objects and prior blockages
- Improper connections — downspouts or sump discharge tied into the sanitary lateral
Reporting the Findings
The most common complaint about sewer scopes is a report that shows a problem without telling the buyer what it means. Keep the description factual and the recommendation clear.
- Footage marker for every finding
- Still frames pulled from the video for the written report
- Full video file delivered or hosted, not just stills
- Severity described in observable terms (percent of diameter, inches of standing water)
- Clear distinction between maintenance items and structural failures
- Recommendation for licensed plumber evaluation where structural defects appear
- Explicit statement of what was not visible and why
Most common findings — and why they matter
These come up often enough that it is worth knowing the consequence, not just the observation.
Root intrusion at clay tile joints
The most common finding on pre-1970 laterals. Cutting clears it temporarily; roots return because the joint is still open.
Bellies holding standing water
Solids settle in the low spot and cause recurring backups. A belly cannot be cleared by snaking — it requires excavation and re-grading.
Orangeburg pipe
A tar-impregnated wood-fiber pipe used roughly 1945–1972. It deforms under load and is considered failed regardless of current flow.
Offset joints
Ground movement separates sections, catching solids and admitting soil. Severe offsets are a full replacement, not a repair.
Downspouts tied into the sanitary lateral
Illegal in most jurisdictions and a cause of backups during heavy rain. Cheap to find, expensive to ignore.
Frequently asked questions
How much does a sewer scope inspection cost?
Typically $125–$300 as an add-on to a home inspection, and $200–$500 as a standalone visit. Cost rises if a cleanout has to be located or a toilet pulled.
Is a sewer scope worth it on a newer home?
Usually yes on anything past about 15 years, and sometimes on new construction — crushed or debris-filled laterals from construction traffic are a real finding on brand-new builds.
Who pays for lateral repairs, the homeowner or the city?
In most jurisdictions the homeowner owns the lateral from the house to the main, sometimes including the portion under the street. Municipal responsibility varies enough that the report should tell the buyer to confirm locally rather than assert it.
Can a sewer scope be done if there is no cleanout?
Yes, usually by pulling a toilet, though that adds time and risk. Some lines can be accessed through a roof vent, but the bends make it unreliable. Note the limitation in the report either way.
Does a standard home inspection include a sewer scope?
No. Underground and non-visible components are excluded from every major standard of practice. It is a separate, specifically-ordered service.
Turn this checklist into a finished report
Walk the property, photograph what you find, and narrate your observations. FieldScribe analyzes the photos, transcribes the voice notes, and drafts the report in professional language — you review, edit, and export the PDF. First report is $9.99 with no subscription.
Related checklists
This checklist is provided free for professional and personal use. It is a general reference, not a standard of practice — inspection requirements vary by state, jurisdiction, and client agreement, and licensing rules for specialty inspections differ. Verify current requirements with your state board and the relevant standard of practice before relying on it in the field.