Buying a House on Long Island? Get the Sewer Line Inspected Before You Close

A standard home inspection covers the roof, the boiler, the electric panel — and stops at the drain openings. The sewer lateral, the single most expensive pipe on the property, goes uninspected in most Long Island transactions.

What buyers inherit

Root-invaded clay lines in older neighborhoods, corroded cast iron under slab homes, and cesspools nobody disclosed because nobody knew. Replacement costs routinely run $8,000–$25,000 — money that should have been negotiated off the purchase price.

The one-hour check that changes the deal

A pre-purchase camera inspection takes about an hour and produces recorded video of the entire lateral. If the line is clean, you buy with confidence. If it isn’t, you have documented evidence for your attorney before contracts are signed — not a plumber’s invoice after you’ve moved in.

Also check what’s under the yard

Use our free Home System Risk Check to see whether the address is in a sewer district or likely on a cesspool or septic system — it takes thirty seconds and uses Suffolk County parcel data.