Common Plumbing Problems Found During Home Inspections

Jan 9, 2026

Buying or selling a home is an exciting process, but home inspections often uncover plumbing issues that can delay a sale or lead to unexpected repair costs. Many of these problems are not obvious during day-to-day living, which is why inspections play such an important role in protecting both buyers and sellers.

At Arellano Plumbing, Heating & Air Conditioning, we frequently help homeowners address issues discovered during inspections. Here are some of the most common plumbing problems inspectors find, and why they should not be ignored.

Leaking Pipes and Fixtures

Even small leaks can raise red flags during a home inspection. Dripping faucets, leaking supply lines, or moisture under sinks often indicate worn seals or aging pipes. Left unaddressed, these leaks can lead to water damage, mold growth, and higher utility bills.

Low Water Pressure

Inspectors often test multiple fixtures throughout the home. Weak water pressure can signal mineral buildup, corroded pipes, hidden leaks, or problems with the pressure regulator. While it may seem minor, low pressure can point to larger plumbing concerns.

Outdated or Corroded Pipes

Older homes may still have galvanized steel or other outdated piping materials. These pipes can corrode from the inside, restricting water flow and affecting water quality. Many buyers see outdated plumbing as a future replacement expense, which can impact negotiations.

Improper Drainage

Slow drains or gurgling sounds often show up during inspections. These issues may indicate partial clogs, improper venting, or sewer line concerns. Drainage problems can worsen over time and lead to backups if not properly addressed.

Water Heater Issues

Inspectors frequently find water heaters that are past their expected lifespan, improperly installed, or lacking required safety features. Signs of rust, leaking, or inadequate hot water supply can suggest the need for repair or replacement.

Poorly Done Repairs or DIY Work

Unpermitted or incorrect plumbing repairs are common inspection findings. Loose connections, mismatched materials, or improper pipe slopes can all cause long-term problems. These issues often need professional correction to meet current plumbing codes.

Why Fixing Inspection Issues Matters

Plumbing problems found during a home inspection can delay closing, lower a home’s value, or create stress for buyers and sellers alike. Addressing these issues early helps ensure a smoother transaction and protects the long-term integrity of the home.

At Arellano Plumbing, Heating & Air Conditioning, we provide thorough inspections and reliable repairs to help homeowners resolve plumbing concerns quickly and correctly.

If you are preparing for a home inspection or need repairs after one, contact our team today to schedule service and move forward with confidence.

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