Supply side
- Service line material at its entry point: copper, plastic, galvanized or lead pipe.
- Main shut-off valve condition and type.
- Supply piping: copper, PEX, galvanized or polybutylene.
- Water pressure at upper-floor fixtures.
Drain side
- Stack material: cast iron, ABS or PVC
- Basement floor drain condition
- Presence of a backwater valve
- Sump pump and discharge
- A camera inspection of the sewer lateral
Equipment
- The heater's age, and who owns it
- Water softener or filtration systems
Rented equipment. If the water heater or other equipment is rented, the rental contract usually transfers with the house. Ask for the terms before closing.
Signs of past problems
- Stains on ceilings or around fixtures
- New drywall patches in odd places
- Efflorescence on basement walls
- Musty odours
A sewer camera inspection before closing is especially valuable for older homes. Past freeze damage may need pipe repair. Knocking pipes in a viewing? Read noisy pipes and water hammer.
Questions for the seller
Ask for receipts for any sewer, water heater or repiping work, whether the basement has a history of flooding, and whether any equipment is rented. Written answers become part of your own records once the deal closes.
Worth knowing
Answers our Mississauga crew gives most
Is a sewer camera inspection worth it?
For older homes especially, yes. Lateral repairs can be costly.
Can I see the water heater date?
The serial number often encodes it. Ask the seller or a plumber.
What if I find polybutylene?
Factor replacement into your budget and check with your insurer.