: Steel tanks typically last about 20 years. If the tank is older, experts often recommend immediate replacement rather than testing.

: Professional inspectors may use ultrasonic testing to measure the thickness of the tank walls, as they often corrode from the inside out due to water buildup. Key Risks & Considerations

: Look for "weeping" seams, heavy rust, dents, or oil staining around the base and legs.

A standard home inspection may not thoroughly evaluate an oil tank; you should hire a specialist to perform a comprehensive integrity test.

: While leaks are visible, an uncontained spill can still reach groundwater or neighboring properties, costing between $20,000 to $90,000+ for remediation.

Buying a home with an aboveground oil tank (AST) is generally lower-risk than one with a buried tank, but it still requires careful due diligence to avoid environmental liabilities and unexpected replacement costs. Essential Inspections