Plumbing Red Flags in Flip Properties

Plumbing problems can be the most expensive surprises in a flip. Know what to look for.

Plumbing issues range from minor fixes to five-figure nightmares. Identifying potential problems during your initial property assessment can save you from costly surprises.

Pipe material red flags: Galvanized steel pipes (common in pre-1960 homes) corrode internally, reducing water pressure and eventually failing. Full repipe costs $5,000-15,000. Polybutylene pipes (installed 1978-1995) are prone to failure and many insurers won't cover homes with them.

Sewer line concerns: Clay sewer lines (pre-1970) are susceptible to root intrusion and collapse. A sewer scope camera inspection ($200-350) can reveal problems that would cost $5,000-15,000 to repair.

Water heater: Check age (printed on the serial number), signs of corrosion, and proper venting. Replacement costs $1,000-2,500 for tank-style, $3,000-5,000 for tankless.

Leaks and water damage: Stains on ceilings and walls, warped flooring near bathrooms and kitchen, musty odors, and mold growth all indicate active or historic water intrusion.

Water pressure: Low pressure throughout the house suggests corroded supply lines or a failing pressure regulator. Test at multiple fixtures.

Always budget for at least minor plumbing work on any flip. Even cosmetic renovations typically require fixture replacements, supply line connections, and potentially drain modifications.