On Long Island, a functioning sump pump isn’t a luxury — for homes in low-lying or flood-prone areas, it’s essential protection. Here’s what to know before you close.
What Inspectors Check
Your inspector will run water into the sump pit to trigger the float switch and confirm the pump activates and discharges properly. They’ll check the discharge line to confirm it terminates at least six feet from the foundation and drains away from the home. They’ll look for signs of prior water intrusion — efflorescence on block walls, rust staining on the pit, water marks on the framing — that indicate how often the pump has been called into service.
Battery Backup: Ask About It
Sump pumps fail during the exact conditions that cause flooding: power outages. A battery backup system is the difference between a dry basement and a foot of water during the next northeaster. Many Long Island homes don’t have one. If the home doesn’t have one, factor it into your post-close to-do list — they run $300–$600 installed.
Red Flags
A sump pump that runs continuously (indicating a high water table or constant intrusion), visible rust and corrosion on the pump body, an improperly sealed pit, or discharge that terminates close to or against the foundation are all concerns worth noting in your negotiation.
The Inspection Boys inspect every accessible sump pump as part of a standard Long Island home inspection. Book at homeinspectionsli.com.
