Things That Fail a Home Inspection in Canada

Things That Fail a Home Inspection in Canada

Your real estate agent has been working for months to locate you the ideal property, so you may not have given items that don't pass a home inspection much thought since you're so eager to make an offer.

Nobody likes to consider for even a moment that the house they've fallen in love with could be hiding some major home inspection red flags.

Let's discuss the most frequent reasons for things that fail a home inspection so you can anticipate what can cause delays.

1. Structure and/or Foundation Issues

Some of the most significant things that fail a home inspection in Canada during a home inspection are foundation and structural problems.

Do not you know what a home inspection is? Click on the article what is home inspection to find out.

These problems might compromise the stability and safety of the house and be costly to fix.

What to anticipate during a house inspection concerning foundation and structural concerns is broken out here:

  • Foundation: The inspector will check for heaving, bending, cracks, and settling in the foundation.
  • Cracks: Inspectors will search for fractures in the foundation itself as well as in the walls, ceilings, and flooring.
  • Windows and Doors: Inspectors will verify that windows and doors open and close correctly. Windows or doors that stick may be a sign of foundation settlement.
  • Sloping Floors: An uneven floor may indicate an issue with the foundation. The inspector will gauge the floors' slope with a level.
  • Water Damage: Issues with the foundation may arise from water damage. Both inside and outside the house, the inspector will search for indications of water damage.

2. Leaks or Signs of Moisture

Red flags for a home inspection include leaks and moisture-related indicators. They may reveal latent concerns that later develop into major difficulties, such as:

  • Structural damage: Over time, water may erode building components, which may have an impact on the house's structural stability.
  • Mold growth: Wetness gives rise to the growth of mold, which can be hazardous to health and need expensive removal.
  • Wood rot: Wood rot is a condition that can harm flooring, beams, and other wooden structures in moist settings.
  • Higher utility costs: Water waste and increased water costs might result from leaks.

a leaking plumbing in home inspection red flags

image sourced from here

3. Electrical Problems

Electrical issues can be costly to address and provide a safety risk. A trained inspector will look for a range of possible electrical problems during a house inspection to guarantee the security and efficiency of the electrical system in the house.

Below is a summary of what to anticipate:

  • Sufficient Grounding: For safety, enough grounding is essential. The inspector will verify that electrical panels and outlets are properly grounded.
  • Older Homes' Aluminum Wiring: This type of wiring can be dangerous. Once the type of wiring is identified, the inspector will let you know if it should be taken further.
  • Overloaded Circuits: An overloaded circuit increases the danger of overheating and fires by allowing too many appliances or gadgets to be hooked into it.
  • Damaged Wiring: Frayed or damaged wires, which provide a fire risk, are likely to be seen by inspectors.
  • Ground Fault Circuit Interrupters, or GFCI Outlets: These outlets are necessary for wet locations such as kitchens and toilets.
  • Carbon monoxide and smoke detectors: The majority of places need to have operational carbon monoxide and smoke detectors.
  • Visible Indications of Issues: Inspecting inspectors will search for indicators of potential electrical problems, such as flickering lights, dimming switches, or non-functioning outlets.

4. Plumbing Concerns

A trained inspector will go over the plumbing system during a house inspection in order to spot any issues that can cause leaks, water damage, or expensive repairs.

What to anticipate in terms of plumbing issues during a home inspection is broken out here:

  • Leaks: Inspectors will visually inspect the area under sinks, around the water heater, and around fixtures (sinks, tubs, showers, and toilets) for indications of leaks.
  • Water Pressure: The water pressure in the entire house will be evaluated by the inspector.
  • Drainage: Water flow from sinks, bathtubs, showers, and toilets will be examined by inspectors. Slow drainage may be a sign of venting problems or blocked pipes.
  • Visible Pipe Condition: We will look for damage, rust, or corrosion on exposed pipes.
  • Water Heater: The inspector will examine the water heater's age, state of repair, and operational efficiency.

5. HVAC Deficiencies

A trained inspector will evaluate the HVAC system (heating, ventilation, and air conditioning) as part of a house inspection in order to spot any issues that can compromise indoor air quality, comfort, or efficiency.

Click here to see a complete list of HVAC issues found when inspecting the house.

What to anticipate from HVAC issues during a house inspection is as follows:

  • Condition and Age of the System: The age of the air conditioner and furnace will be noted by inspectors. In addition to being less effective, older systems are more likely to need maintenance or replacement.
  • Functionality: If the weather permits, the inspector will activate the HVAC system and ensure it warms or cools appropriately.
  • Airflow: By touching vents to ensure proper air distribution, inspectors will evaluate the airflow throughout the property.
  • Ducts: Although it is typically not feasible to fully investigate the duct system during a home inspection, the inspector will nonetheless keep an eye out for any indications of disconnected or leaky ducts.
  • Filters: A clogged air filter can impede airflow and lower performance. The air filter's state will be examined by the inspector.
  • Safety Concerns: When conducting an inspection, an inspector will search for any possible openings that might allow carbon monoxide to enter the house, such as gas leaks near the furnace or flue leaks.

Are you thinking about the other plumbing issues found? If so, click on the article plumbing inspection.

6. Roofing Issues

A careful evaluation of the roof is essential during a house inspection. In addition to being costly to fix, roof concerns can result in water damage within the home, which can lead to structural problems, the growth of mildew, and other issues.

What to anticipate from a house inspection about roofing difficulties is as follows:

  • Broken or missing shingles: These can let the elements in and raise the possibility of leaks by exposing the roof underlayment.
  • Shingles that are worn or cracked: Shingles degrade with time and lose some of their waterproofing ability.
  • Shingles that are burning or curled may be a sign of moisture issues behind the shingles.
  • Growth of algae or moss: While not always a structural issue, an abundance of moss can retain moisture and worsen the condition of the shingle.
  • Flashing: The process of sealing off roof penetrations such as chimneys, vents, and skylights.
  • Valleys: The V-shaped places where two roof slopes converge. These regions are more likely to experience leaks, so inspectors will be on the lookout for wear, debris buildup, or poor ventilation.
  • Roof drainage: The examiner will make sure that the gutters are in good condition, have no debris in them, and have a downspout that works to divert water away from the foundation.
  • Roof Leaks: When inspecting an attic, inspectors will be on the lookout for indications of leaks, such as water stains, mold growth, or damaged insulation.

Click on the article roof inspection to find more information about it.

7. Health and Safety Concerns

A trained inspector will search for a variety of health and safety issues that can endanger the inhabitants during a home inspection.

These can include chemical risks like asbestos and biological ones like mold and bugs.

Below is a summary of what to anticipate:

  • Mold: Inspectors will be on the lookout for obvious indications of mold development, which usually manifests as green, brown, or black mold on surfaces such as floors, walls, and the areas surrounding plumbing fixtures.
  • Pests: It's usual practice to visually look for indications of previous or present pest infestations. Droppings, burrows, damaged wood, and live insects are examples of this.
  • The asbestos: If breathed, asbestos is a dangerous substance that can have major health effects.

8. Insufficient Insulation

When a house's insulation falls short of acceptable levels for energy efficiency and pleasant temperature maintenance, it is referred to as having inadequate insulation during a home inspection.

The following is a summary of the things an inspector may see that indicate inadequate insulation:

  • Exposed studs or rafters in the attic that have little to no insulation showing between them.
  • The horizontal floor beams that run the length of the foundation wall around the basement rim joists have little or no insulation.
  • Indicators of inadequate wall insulation (generally not readily apparent). The age of the house, the building codes in place at the time of construction, or the sensation of particularly chilly or drafty walls might all be used to deduce this.

Are you looking for standard ways not to face these red flags? If so, click on the article tricks to pass home inspection to find out.

9. Code Violations

An experienced inspector will look for any infractions of the building codes in the area while inspecting a home.

The purpose of these codes is to guarantee a home's structural integrity, functioning, and safety.

What you should know about code infractions during a home inspection is as follows:

  • Electrical Framework: A few possible infractions include old electrical parts, improper wiring, overloaded circuits, and the absence of ground fault circuit interrupters (GFCIs) in restrooms and kitchen areas.
  • Plumbing System: Possible code violations include inadequate water pressure, poor venting, leaking pipes, and unapproved plumbing work.
  • Structural Components: Evidence of structural alterations made without permission, incorrect support for beams or floors, and cracks in walls, ceilings, or foundations wider than a particular amount might all be considered violations.

10. Lack of Maintenance

"Lack of maintenance" is a broad word used during a house inspection to highlight problems that result from failing to maintain the property on a regular basis.

These might be more significant difficulties that could develop into larger problems later on, or they could be minor cosmetic concerns.

When it comes to spotting neglect during a house inspection, you may anticipate the following:

  • Paint that is peeling, broken tiles, or poor caulking around windows and doors.
  • Overflowing downspouts, dirty landscaping, or clogged gutters.
  • Rusted or rusty pipes, dripping faucets, or broken appliances.
  • Unkempt trees or bushes around the residence.
  • Missing cap on a chimney cleanout or the dryer vent pipe.
  • Broken or loose electrical switches or outlets.
  • Unrepaired fractures on driveways or pathways.

The thing is, if you prepare properly for the home inspection, many of these red flags might not appear in the inspection. Click on the article how to prepare for a home inspection to find out more.


What is the biggest red flag in a home inspection?

During a home inspection, structural concerns like leaky roofs, foundation difficulties, or significant water damage are typically the main cause of concern.

When to walk away after the home inspection?

Ongoing dangers to one's health Lead-based paint, high radon levels, black mold, carbon monoxide, and indications of electrical fire damage are all potentially fatal issues that are not easily resolved.

You're probably better off leaving if one of these serious problems comes up during your examination.


If you are thinking about getting a home inspection, you probably must know the most important home inspection red flags.

This is especially needed if you want to purchase a house. Read these red flags so that you can make a wise choice after the home inspection.

Let us know if this post is useful for you.