Sewer Scope Inspection: How to Add It to Your Business

Short answer: A sewer scope is a camera inspection of the building sewer, the lateral that runs from the house to the public main or septic tank. The standard home inspection does not cover it, so it sells as a separate service with its own equipment (a push camera with a recorder and a locator), its own documentation (pipe material, defects, distances, video), its own agreement language and its own report. Price it from your equipment, time and risk, not as a discount on the main inspection.

The sewer lateral is one of the few expensive systems in a house that nobody sees during a normal inspection. That gap is why sewer scopes sell, and it is also why they carry risk: you are reporting on a pipe that is buried, often decades old, and that the client may be legally responsible for all the way to the street.

This guide is for inspectors deciding whether to add the service, and for those who have added it and want a tighter process.

Why a sewer scope sits outside the home inspection

Neither major standard of practice asks you to look inside the buried line.

The ASHI Standard of Practice limits the drain inspection to "interior drain, waste, and vent systems," and separately lists "septic and other sewage disposal systems" among the things the inspector is not required to inspect. The InterNACHI Standards of Practice have the inspector inspect "the drain, waste and vent system," and list "underground utilities" and "underground items" as not required.

ASHI's revised Standard of Practice makes the point directly. Members approved it on January 8, 2026, and ASHI's Standard of Practice Changes page lists its implementation date as January 1, 2027. Until then, ASHI says the current standard applies. The revised text keeps the plumbing inspection to the "predominant interior drain, waste and vent systems including fixtures," keeps septic and other sewage disposal systems on the not-required list, and adds a section on specialized equipment. Under its section 16.2, the inspector is not required to use "cameras or other equipment used to inspect the interior of a drain or sewer line."

So the buried line between the house and the main is outside a standard inspection under either standard. Running water through fixtures tells you the drains flow today. It tells you nothing about a cracked clay joint forty feet out.

Ownership is what makes this matter to the client. Some utilities put the whole lateral on the property owner. The San Bernardino Municipal Water Department, for example, states that "maintenance and repair of the full length of the Private Sewer Lateral is the responsibility of the property owner," including the part that runs beyond the property line into the public right of way. Rules differ by utility, so tell clients to check with theirs rather than quoting a general rule.

Some jurisdictions go further and tie the lateral to the sale. East Bay Municipal Utility District in California requires a compliance certificate, issued when the private sewer lateral is shown to be leak-free, to close escrow when buying or selling a covered property. A seller who cannot finish the work in time can buy a time extension certificate, which allows 180 days. Where rules like that exist, the scope becomes a step in the transaction rather than an optional extra.

Equipment you need

You do not need municipal CCTV gear. You do need equipment that produces clear, repeatable evidence, because the video is the report.

Two items get skipped and then regretted.

The locator. A defect at 52 feet is only useful to a plumber if they know where 52 feet is on the lawn. With a sonde and locator you can mark the surface position and estimate depth, which turns "there is a break" into "there is a break under the driveway apron, about this deep." That is the difference between a finding and an answer.

Recording and storage. If the video is not saved, labeled and deliverable, you have no evidence when a client calls in eight months. Decide before your first job how you name, store and retain footage.

For the rest of your field kit, see home inspector tools.

How a sewer scope runs on site

Keep the process the same every time, so the report is consistent and the agreement matches what you actually did.

1. Confirm access before the day. Ask whether there is an accessible cleanout. If the only access is by pulling a toilet or through a roof vent, decide in advance whether you offer that, and say so in the agreement.
2. Record the entry point. Note where you entered, which direction you ran (toward the main or toward the house), and the pipe size at entry.
3. Run water. A flow of water down the line shows standing water in low spots and makes the pipe floor visible.
4. Record continuously. Keep the camera recording from entry to the end of the run. Pause and hold on each observation long enough for a clear frame.
5. Locate what matters. Use the locator at significant defects and at the end of the run. Mark or measure the surface location.
6. Note where you stopped and why. Reached the main, reached the tank, hit an obstruction, ran out of rod, water too deep to see. This line protects you more than any other.
7. Clean up and disinfect. Close the cleanout, check for leaks, clean the equipment before it goes back in the truck.

If you also offer radon or well testing, schedule the scope as its own line item with its own time block, not something you squeeze in while other tests run.

What to document in every sewer scope

Clients and agents read a sewer scope report for one thing: does this line need money, and roughly where. Document each observation so a plumber could find it and quote it without re-scoping.

Write each observation as a finding with three parts: what you saw, why it matters, and what the client should do. "Offset joint at approximately 31 feet with root intrusion at the joint. Offsets and root intrusion can obstruct flow and lead to backups. Recommend evaluation and repair by a licensed plumber or sewer contractor." That shape is covered in more depth in writing defect comments that hold up.

Avoid two phrases. Do not call a line "good" or "clear" as a verdict on the whole pipe; describe what you observed on the day. And do not estimate remaining life. You cannot see the outside of the pipe or the soil around it.

Industry practice: NASSCO PACP and LACP

There is no single legal standard for a residential sewer scope. The closest thing to a shared vocabulary comes from the municipal pipeline world.

NASSCO runs the Pipeline Assessment Certification Program (PACP), the Lateral Assessment Certification Program (LACP) and the Manhole Assessment Certification Program (MACP). NASSCO describes them as the sources "for proper and consistent assessment condition coding of pipelines, laterals and manholes." They are built for pipeline owners managing public systems, so a home inspector is more likely to borrow the logic than adopt the whole program. Treat PACP as industry practice, not a requirement a home inspector must meet.

The part worth borrowing is how defects are graded. In PACP, each defect gets a condition grade from 1 to 5, with 5 the most significant. The grade comes from the defect code, not the operator's opinion. A 2016 NASSCO technical tip gives a worked example of how a crack escalates (confirm the grades against the current PACP manual if you adopt them):

PACP also separates structural defects from operation and maintenance (O&M) defects such as roots and debris. That split is useful in a home inspection report too: structural defects point toward repair or replacement, O&M defects point toward cleaning and maintenance.

NASSCO is clear about the limits. Its technical guidance says condition grades "cannot take the place of an engineer's judgement" and cannot account for material, loading, voids and other conditions outside the pipe. The same limit applies to you, and your report should say so.

If you want the formal credential, NASSCO lists initial PACP, LACP or MACP certification at $1,270, valid for three years, in classroom or live virtual formats, as of September 2026. Check the current fee on NASSCO's training page.

Liability: scope, agreement and insurance

A sewer scope extends your exposure into a system that fails expensively. Handle it on paper before you handle it in the field.

Put it in the agreement. List the sewer scope as a separate service with its own scope and limitations: which access point, the observed length only, no observation of the pipe exterior or surrounding soil, no warranty of future performance, and conditions that can hide defects (standing water, debris, obstructions). See the home inspection agreement guide for how to structure add-on terms.

Tell your carrier. Before your first paid scope, ask your E&O and general liability carrier whether sewer scopes are covered on your policy and whether they need notice. Home inspector insurance covers what to ask.

Report the limits in plain words. "The camera was stopped at approximately 64 feet by standing water. The remainder of the line was not observed." A limitation that is in the report is a limitation the client read.

Do not sell the repair. If you or a related company also clears or repairs lines, you have a conflict of interest the moment you find roots. InterNACHI's Code of Ethics bars members from offering repairs for a fee on a structure they inspected for 12 months, but it excludes systems outside its Standards of Practice, and an underground lateral is outside them. So the rule may not stop you. The conflict is still there. Keep the finding and the repair quote in separate hands, and check your state's licensing rules on repairs before you mix the two.

Keep the video. Retain the recording with the report. It is your evidence of what the line looked like on the day.

Pricing a sewer scope

Price the service on its own numbers. The full method is in how to price ancillary services; the short version for scopes is below.

Then do the volume test. Divide your annual cost of offering scopes by your margin per scope. That is how many you must sell before the service breaks even. Older neighborhoods with mature trees and original laterals may produce that volume faster than new subdivisions, but only your booking data can tell you.

Two pricing mistakes to avoid. Do not bundle the scope at a discount that drops it below its own break-even. And do not let the scope subsidize a base fee that is too low; fix the base fee directly with how much a home inspector should charge.

In Binsr, booking pricing rules can add the scope as its own priced service or a booking question, and the same rules set the time block on the calendar, so a scope booked with a full inspection gets the extra time automatically.

Delivering a separate sewer scope report

Deliver the scope as its own report. It has a different scope, different limitations and often a different reader: the agent and a plumber will look at the sewer report long after the main report has done its job.

In Binsr, one inspection can produce several reports, such as the main inspection plus a sewer scope, each with its own template. Each report can be locked or hidden from the client until it is ready, so a scope that needs footage review does not hold up the main report. Photos and videos attach at the finding level, so the frame of the offset sits next to the finding that describes it, and the report goes out as a branded, token-protected digital link. Build your sewer scope template once, with the documentation table above as its sections, and every scope comes out in the same shape. See Binsr features for the report builder.

A sewer report that separates structural findings from maintenance items, gives distances and marks surface locations is also a referral tool. Agents remember the inspector whose report let the plumber quote without a second visit. More on that in how home inspectors get agent referrals.

Frequently asked questions

Keep reading

• How to price radon, mold and sewer scope add-ons
• Home inspector radon testing
• Well inspection for home inspectors
• How to become a septic inspector
• Home inspector tools
• Home inspector insurance

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