A sewer scope only protects a buyer if the contract allows them to act on what it finds. That is the inspection contingency: the clause that gives the buyer a period to inspect and the right to negotiate or withdraw based on the results. Most standard contracts include a general inspection contingency that covers a sewer scope; some buyers add a specific sewer clause. This guide covers how to make either one work.
Quick answer: make sure the inspection contingency explicitly covers a sewer camera inspection, allows enough days to schedule it and get a second opinion or quote, requires the seller to provide access to cleanouts, and permits the remedies you want: repair by seller with verification, credit, price reduction or withdrawal with deposit returned. In a competitive market, a short sewer-only contingency is a stronger offer than a full waiver and still protects against the most expensive hidden defect.
The general inspection contingency
Standard purchase contracts give the buyer a period, often seven to seventeen days, to conduct inspections of their choosing and to request repairs or withdraw. A sewer scope is an inspection and is covered. The risk is timing: if the scope is booked late and finds something, the buyer has no days left for a second opinion or a quote. Schedule the scope first. See scheduling.
A specific sewer clause
Where the general contingency is short or where the buyer wants certainty, a clause can state that the buyer may conduct a sewer camera inspection of the drain and lateral to the public main, that the seller will provide access to all cleanouts and permit a toilet to be pulled if no cleanout exists, and that if the inspection reveals defects requiring repair the buyer may request repair, credit or cancel. Naming the sewer removes any argument that it was outside the inspection scope.
Access
A scope needs an entry point. Houses without an accessible cleanout require pulling a toilet or going through a roof vent, and some sellers object. The clause should require the seller to allow reasonable access and to locate or expose a cleanout where one exists. Cleanout access and cleanout vs vent vs toilet entry cover the options.
Timelines
Allow enough days for the scope, a second scope if needed, and a contractor quote from the footage. Ten days is comfortable; five is tight; three works only if the inspector is booked before the offer is accepted. The remedy request should be due within the period and the seller’s response a few days after.
Remedies
The contingency should allow the buyer to request a repair by the seller before closing, a credit at closing, a price reduction, or to cancel with the deposit returned. A buyer who can only cancel has no leverage short of walking; a buyer who can only request repair has handed the seller the choice of contractor. Negotiating sewer repairs covers which remedy to choose.
Verification
If a seller repair is agreed, the addendum should require after footage with the counter visible, a permit where required and a transferable warranty, delivered before closing. A repair clause without verification is a promise. See repair warranties and verification.
Competitive markets
When buyers are waiving inspections to win, a full waiver on an old house with trees is a gamble with a five-figure downside. Alternatives: a pre-offer scope with the seller’s permission, which some sellers allow; a short sewer-only contingency of three to five days with the inspector pre-booked; or a seller-provided recent scope with footage, which the buyer reviews before offering. Any of these is better than nothing on a house where the lateral is likely clay or cast iron.
Seller pre-inspection
Some sellers scope before listing and provide the footage. A buyer should watch it, check the date and entry point, and still consider their own scope if anything is unclear; a seller’s inspector works for the seller. See stills vs video in a report for what to look for.
New construction
A new house has a new lateral, and the contingency still matters: builder mistakes at the tap and in the slope are found by camera and are warranty items if found before closing. See inspection for new construction.
Working with the agent
Tell your agent at the offer stage that you intend to scope the sewer, so the contingency period is written with it in mind and the seller is told access will be needed. An agent who discourages a sewer scope on an old house is not protecting you.
A sample clause in plain terms
The buyer may, within the inspection period, have the sewer drain and lateral inspected by camera from the house to the public main by an inspector of the buyer’s choice. The seller will provide access to all cleanouts and, where none is accessible, will permit the removal and reinstallation of a toilet by a licensed plumber at the buyer’s expense. If the inspection reveals defects requiring repair, the buyer may request repair, a credit or a price reduction, or may cancel and recover the deposit. Any seller repair will be verified by a second camera inspection with the footage delivered to the buyer before closing. Have an attorney or agent adapt the wording to the local contract form; the substance is what matters.
Common questions
Does a standard inspection contingency cover a sewer scope?
Usually yes, as an inspection of the buyer’s choosing. Naming it removes doubt and secures access.
Can I scope the sewer before making an offer?
With the seller’s permission, yes, and in a competitive market it is often worth asking.
What if the seller refuses access to a cleanout?
Under a contingency that requires access, that is a breach and a reason to withdraw. Without one, it is a warning.
Related guides
See the complete sewer scope guide, pre-purchase inspection, and seller disclosure.