Skipping a home inspection on Long Island is a gamble most buyers can’t afford to lose. Here are ten things that routinely slip past untrained eyes — and show up as expensive surprises after closing.
1. Underground Oil Tanks
Thousands of Long Island homes converted from oil heat decades ago. The old tanks often stayed in the ground. A buried tank that’s leaked can turn into a six-figure environmental remediation project. A proper inspection includes a tank sweep.
2. Basement Water Intrusion
A freshly painted basement looks clean. What’s behind the paint can be a different story. Efflorescence, staining, and moisture damage get covered up regularly. An inspector checks for active moisture, drainage grading, and foundation cracks — not just the paint.
3. Problematic Electrical Panels
Federal Pacific Stab-Lok panels and Zinsco panels are fire hazards still found in older Nassau and Suffolk homes. Insurance companies won’t cover homes with them. Most buyers walking through wouldn’t recognize one.
4. Inadequate Attic Ventilation
Poor attic ventilation causes ice dams in winter, traps heat in summer, and accelerates roof deterioration. It’s one of the top five findings in Long Island inspections — and almost invisible during a casual walkthrough.
5. Aging or Failing HVAC Systems
A furnace that fires up doesn’t mean a furnace that works safely. An inspector tests output, checks heat exchangers for cracks, and evaluates the remaining useful life of the system. Replacing an HVAC system runs $5,000–$15,000.
6. Roof Issues Hidden by Gutters
Missing flashing, soft decking, failing fascia — these issues can be obscured by clean gutters and a recently power-washed exterior. A proper roof inspection catches them before they turn into leaks.
7. Sewer Line Problems
Older clay sewer pipes in communities like Mineola, Hempstead, and Babylon are prone to root intrusion and collapse. A sewer scope is a low-cost add-on that prevents a very high-cost surprise.
8. Radon Levels
Long Island has documented radon risk, particularly in basements. Radon is colorless and odorless — you can’t see or smell it, but it’s the second leading cause of lung cancer in the US. Testing is straightforward and remediation is manageable if caught early.
9. Permit and Addition Issues
Additions built without permits — a finished basement, an extra bedroom, a deck — can become your legal problem after closing. A thorough inspector flags unpermitted work that doesn’t match what’s on record.
10. Mold Behind Finished Walls
A bathroom that was wet for years, recently drywalled over. A basement corner that always collected moisture. Mold doesn’t announce itself. An inspection that includes moisture mapping gives you real data, not just a visual once-over.
Book Your Long Island Home Inspection
The Inspection Boys have completed thousands of inspections across Nassau and Suffolk County. Don’t close without one. Visit homeinspectionsli.com to schedule.
