Mature trees line the sewer route of a 70-year-old house with clay piping. The most useful recommendation is:

Three facts stack here into a well-known risk profile: clay sewer pipe, seventy years of service, and mature trees along the run. Clay pipe is jointed rather than continuous, and those joints loosen as the bedding settles. Roots find the moisture and nutrients leaking from a loose joint, enter, and then grow into a mass that both obstructs flow and pries the joint further apart. None of this is visible from inside the house, and none of it announces itself until a backup occurs, typically at the worst possible moment. A camera scope answers the question directly, costs a fraction of a repair, and — crucially for a transaction — produces evidence before closing rather than a surprise afterward. The value of the recommendation is timing as much as content.

A camera scope inspects the lateral directly and identifies root intrusion, joint separation, bellies and cracks before closing. It converts a known risk profile into a documented condition at a small fraction of a repair's cost.

Sewer laterals of clay or cast iron in older housing are prone to joint separation, root intrusion, bellies and collapse. Home inspections do not include the buried lateral, so inspectors identify the risk profile and recommend a camera scope by a specialist.

Old Clay Plus Big Trees Equals Scope It. The line is buried, the risk is known, and a camera answers the question for the price of a service call.

Note in the report that the buried lateral is outside the inspection scope. That framing is what makes the recommendation a referral rather than an unfinished inspection.

• •Recommending remedies before the line's condition is known
• •Deferring the question past closing when it is cheap to answer now
• •Omitting that the buried lateral is outside the inspection scope