Plumbing Inspection Checklist: Toronto Home Guide

  • March 25, 2024

If you need to take a thorough look at a home for any serious plumbing problems, a plumbing inspection checklist can make the entire process much easier. 

Whether you’re a homeowner looking to perform some routine maintenance, are on the hunt for a new home, or you’re in the market to sell your current one, plumbing inspections are an essential part of the process.

This plumbing inspection checklist will serve as a valuable resource for you, whether you’re a homeowner, buyer, or seller. 

Following it will give you a thorough assessment of the condition of your plumbing system, identify any serious problems, potential issues or areas for improvement, so you can take appropriate action to maintain or enhance the property’s plumbing infrastructure.

3 Reasons for a Plumbing Inspection

1. Buying a new house

If you’re a buyer eyeing up a potential new home, you’ll benefit from plumbing inspections. Buyers need to know if there are any underlying issues that could potentially become costly repairs down the line. A plumbing inspection provides insight into the condition of the property’s plumbing systems, allowing you to make informed decisions and potentially negotiate repairs or adjustments with the seller. 

A comprehensive plumbing inspection checklist can uncover hidden leaks, faulty fixtures, or outdated piping, providing buyers with valuable information to make informed decisions about their investment.

2. Selling a house

For sellers, a plumbing inspection can be just as important as it is for buyers. By proactively identifying and addressing any plumbing issues before listing the property, sellers can increase its marketability and potentially avoid last-minute negotiations or deal-breakers. A clean bill of health from a plumbing inspection can reassure prospective buyers and streamline the selling process.

3. Regular maintenance

For homeowners, regular plumbing inspections help prevent costly repairs by identifying potential issues early on, ensuring your plumbing systems stay in tip-top shape by addressing any issues before they escalate. Routine maintenance helps prevent unexpected breakdowns, water damage, and costly repairs. 

By scheduling periodic inspections, homeowners can identify minor issues early on and take proactive steps to maintain the integrity and efficiency of their plumbing system.

Call A Toronto Plumber First!

Whatever the reason you’re going through plumbing inspection checklists, they play an important role in safeguarding your investment by ensuring your home’s plumbing system stays in good shape, not to mention helping you avoid costly repairs in the long run.

Of course, identifying an issue is one thing: fixing it is an entirely different matter! If you’re not into DIY plumbing, or would like a professional Toronto plumber to take this plumbing inspection checklist off your hands, give Hoerner a call or book an appointment online.

Plumbing Inspection Checklist

Your plumbing inspection checklist should predictably focus around the areas of the home that have many plumbing fixtures. But there are other spots that have other appliances and plumbing fixtures, such as drain connections in the utility room or outdoor water supply lines for your hoses. Visually inspect the areas you can reach and see, and use tools such as a water pressure meter when necessary.


  • Sink drain: Inspect the kitchen sink drain regularly for any signs of clogs or slow drainage. Check for leaks around the drain pipe connections.
  • Faucet: Test the functionality of the faucet, including both hot and cold water. Look for leaks or drips from the faucet and its connections.
  • Shutoff valve: Ensure that the shutoff valve under the sink is operational in case of emergencies.
  • Garbage disposal: Test the garbage disposal for proper operation. Listen for any unusual noises and check for leaks around the unit.
  • Dishwasher: Run a cycle in the dishwasher to check for leaks, proper drainage, and functioning of the detergent dispenser. Ensure there isn’t any dishwasher discharge on the floor near the base of the appliance after a cycle.
  • Refrigerator: Inspect the water supply line if the refrigerator has a water dispenser or ice maker. Look for leaks or damage to the line.
Adam toilet installation


  • Faucets: Test the functionality of all faucets, including the hot and cold water. Check for leaks around the faucet handles and connections.
  • Drains: Inspect the drains in sinks, tubs, and showers for any signs of clogs or slow drainage. 
  • Toilets: Flush toilets to ensure they operate properly. Check for leaks around the base of the toilet and inspect the tank components for any signs of damage that may require toilet repair or replacement.
  • Caulk seals: Inspect caulking around sinks, tubs, and showers for signs of wear or deterioration. Reapply caulk as needed to prevent water damage.


Boiler and water heater installation
  • Washing machine: Check the washing machine hoses for signs of wear or leaks. Ensure that the hoses and vent pipes are properly connected and not kinked.
  • Septic system: If applicable, inspect the septic tank system for any signs of backups or leaks. Schedule regular maintenance as needed.
  • Sewer and drainage lines: Inspect the main sewer line and drainage lines for signs of damage or leaks. Look for any signs of standing water or foul odors. Check the under floor drainage system for any leaks, if applicable. A lateral sewer repair—the pipe that links your home’s plumbing to the municipal sewer line—is the homeowner’s responsibility. 
  • Sump pump drainage systems: Test the sump pump to ensure it activates properly and pumps water away from the foundation of the home. Ensure the sump pit is in good repair and not leaking. 
  • Backwater valve: Close the lid on the valves tightly and ensure there are no leaks around the system. It’s recommended that a qualified plumber inspects your backwater valve, too.
  • Water heaters: Check the water heater tank system for any signs of leaks or corrosion. Inspect the pressure relief valve and drain valve for proper operation. Water heaters usually need to be repaired or replaced every 10 to 15 years, so be sure that you check the age if you’re looking at a new home. If you have a tankless water heater, ensure the water lines are free of leaks and there are no loose fittings on the water hoses.
  • Water pressure: Test the water pressure throughout the house using a pressure gauge. It should fall within the recommended range for normal working pressure.
  • Exposed pipes: If your inspection is during the winter, ensure that any exposed pipes near exterior walls aren’t frozen. If you see pipe insulation, it could be a sign that the pipes are prone to freeze.


  • Outdoor spigots: Inspect outdoor hose spigots for any signs of leaks or damage. Ensure that they are properly connected and do not leak when turned on.
  • Irrigation system: Check the irrigation system for any signs of leaks or clogs. Test each zone to ensure proper water distribution.
  • Water meter: Locate the water meter and check for any signs of leaks or unusual activity. Monitor water usage to detect any potential leaks.

When to Call a Professional Plumber

When you go through your plumbing inspection checklist, you might find more problems than you know what to do with.

If you have leaks that continue despite DIY attempts to fix them, it’s time to call in a professional plumber. While a plumbing system can last decades, there will eventually come a time when they must be updated. Excessive water flow, high water pressure, or calcium buildup could lead to a leaking pipe, and if the damage is serious, it could mean repiping is required.

Here are some other indications that you’re in need of a professional plumber:

  • Low water pressure: Low water pressure can indicate a variety of issues, including clogged pipes or problems with the water supply line.
  • Slow drains: If your drains are consistently slow or frequently clogged, it could be a sign of a more significant plumbing issue. Bad smells, gurgling noises, or slow draining are all signs that you have a clogged drain.
  • Unpleasant odors: Foul smells coming from drains or pipes could indicate a sewer or drainage problem that requires professional attention.
  • Water discoloration: Discolored water, such as brown or yellowish tint, could indicate rust in the pipes or other water quality issues.
  • Noisy pipes: Banging, clanging, or whistling noises coming from your plumbing system may indicate loose pipes, water hammer, or other issues that need to be addressed.

Plumbing inspection checklists are a great tool for homeowners, but it’s a good idea to have a professional plumbing inspection done on a regular basis. Professional plumbers have the knowledge and experience to identify and address plumbing issues accurately. They have access to specialized tools and equipment to perform thorough inspections and repairs, so you don’t have to spend big bucks on a tool you might use once or twice.

Professionals can also quickly diagnose and fix problems, saving you time and hassle. Plumbing work can be hazardous, especially when dealing with gas lines or sewage systems. Hiring a professional ensures the job is done safely and correctly.

Hoerner Heating & Plumbing is Here to Help

Request a quote from Hoerner Heating & Plumbing for a professional plumbing inspection today. 

Our team of experienced plumbers will conduct a thorough inspection of your plumbing system, identify any issues, and provide expert recommendations for repairs or maintenance. 

Don’t wait until it’s too late—schedule your inspection now to keep your plumbing system in top condition.