What plumbing should I check when buying a house?

When buying a house, focus on the water supply system, drainage, water heater, and visible pipes - these areas reveal the most about potential costly repairs and safety issues.

Water Pressure and Supply Lines should be your first priority. Turn on multiple faucets simultaneously on different floors to test water pressure throughout the house. Check for consistent hot water delivery and note how long it takes to get hot water at distant fixtures. Look for any discolored water, which could indicate corroded pipes or sediment buildup. In Ottawa's older neighborhoods, many homes still have original copper or even galvanized steel pipes that may need replacement.

Inspect All Visible Plumbing in basements, crawl spaces, and under sinks. Look for signs of leaks like water stains, mineral deposits, or corrosion on pipes and fittings. Pay special attention to pipe materials - modern PEX or newer copper is ideal, while galvanized steel pipes (common in pre-1960s Ottawa homes) often need replacement. Check that pipes are properly supported and insulated, especially in unheated areas where freezing could be an issue during Ottawa's harsh winters.

Test Every Drain and Fixture by running water for several minutes. Slow drainage often indicates partial blockages or more serious sewer line issues. Flush all toilets and check for proper operation and signs of leaks around the base. In Ottawa, older homes may have clay sewer lines that are susceptible to tree root intrusion or settling damage. Ask about the age and condition of the main sewer line, as replacement can cost $8,000-$15,000.

Water Heater Assessment is crucial since replacement costs $1,500-$5,500 depending on type. Check the age (look for manufacture date on the label), condition, and proper venting. Tank water heaters typically last 8-12 years in Ottawa's hard water conditions. Note the size - a family of four typically needs a 40-50 gallon tank or appropriately sized tankless unit.

Ottawa-Specific Considerations include checking for a backwater valve (required in many areas to prevent sewer backup), proper sump pump operation if applicable, and ensuring the main water line from the street is in good condition. Many Ottawa homes built before 1960 may have lead service lines that require replacement.

Professional Inspection Recommended - While you can check these basics, hire a licensed plumber for a comprehensive inspection on any house built before 1980 or showing signs of plumbing issues. This typically costs $300-$500 but can save thousands in unexpected repairs. For a thorough plumbing assessment during your home purchase, Ottawa Pro Plumbing offers pre-purchase inspections to help you make an informed decision.