Which 7 items should be on a home inspection checklist for Ontario?
What this checklist covers and what it does not
This article provides a practical, Ontario-focused seven-point pre-inspection checklist you can use during showings, pre-listing checks, and walk-throughs. For each item you will find visible signs to look for, why it matters in Ontario, when to call a professional, and short buyer and seller actions. This checklist is preparatory only and does not replace a full inspection by a licensed home inspector or municipal permit searches.
For authoritative background on the role of inspections, see federal consumer guidance on home inspections and the CMHC homeowner's inspection checklist.
1. Roof, attic and exterior envelope
What to look for: from the street and inside the attic, note missing, buckled or curling shingles, sagging rooflines, moss growth, flashing problems around chimneys or skylights, and detached or rusted eavestroughs. In the attic, look for water stains, dark patches, damp insulation or mould.
Why it matters in Ontario
Ontario’s freeze-thaw cycles and winter ice build-up increase the risk of ice dams and accelerated shingle wear. Leaks that persist through a winter can damage structure and insulation.
When to call a pro
Arrange a professional roof inspection if you see active leaks, large areas of missing shingles, a sagging roofline, or significant attic staining. Sellers can order a focused roofing evaluation to document remaining life expectancy before listing.
Buyer and seller actions
- Buyer: request service records and a roof-focused inspection when you see stains or missing shingles.
- Seller: remove moss, secure loose shingles or flashing where safe, and clean eavestroughs; keep receipts for disclosure.
2. Foundation, basement and site drainage
What to look for: check the basement and exterior grade for horizontal cracks, stair-step cracks, bowing or bulging walls, active moisture, efflorescence (white mineral deposits), mould, and any standing water or grading that directs water toward the foundation.
Why it matters in Ontario
Spring melt and heavy storms can reveal inadequate site drainage or high water table issues in some Brampton and Peel-area neighbourhoods. Even hairline cracks can allow water entry under pressure during thaw cycles.
When to call a pro
Call a structural engineer or foundation specialist for horizontal cracks, bowing, or repeated wetness. For persistent dampness, consult a waterproofing contractor to evaluate grading and sump systems.
Buyer and seller actions
- Buyer: ask the seller for sump pump service records and whether a weeping tile or recent waterproofing work exists.
- Seller: ensure grading slopes away from the home, direct eavestrough discharge well away from the foundation, and service any sump pump before listing.
3. Heating, ventilation and water heating systems
What to look for: note furnace and water heater apparent age, visible corrosion, leaks, taped joints, obstructed vents, and test a few thermostats or radiators for responsiveness.
Why it matters in Ontario
Reliable heating is essential in Ontario winters. Buyers should know whether systems were maintained for seasonal load and whether there is documentation of regular service.
When to call a pro
Request a mechanical inspection or service records when systems are older, noisy, show corrosion, or emit unusual smells. For gas appliances, a licensed technician evaluation is essential to confirm safe operation.
Buyer and seller actions
- Buyer: request maintenance receipts and include potential replacement or tune-up costs in your budget.
- Seller: provide service records, replace secondary components like aged hoses, and ensure smoke and carbon monoxide alarms meet current Ontario requirements.
4. Electrical system and safety items
What to look for: inspect the electrical panel for rust, double-tapped breakers, or obsolete fuse panels; look for exposed wiring, non-functioning outlets, and the presence of grounded three-prong receptacles. Watch for signs of DIY electrical work such as unlabelled splices.
Why it matters in Ontario
Older panels or amateur electrical work pose fire and insurance risks. Visible warning signs may indicate deeper system issues requiring licensed evaluation.
When to call a pro
Ask a licensed electrician to inspect if you see double-tapped breakers, aluminium wiring without approved connectors, or a very old panel. Sellers should supply invoices and permit records for electrical upgrades.
Buyer and seller actions
- Buyer: include an offer condition allowing an electrician to inspect or request documentation of recent work and permits.
- Seller: gather permits and receipts for any panel upgrades and correct obvious hazards prior to listing.
5. Plumbing, water supply and sewage
What to look for: test taps for pressure, run showers and flush toilets, inspect under sinks for stains or active drips, and check visible piping for corrosion. Outside, note downspout termination and any pooling near sewer access points.
Why it matters in Ontario
Municipal sewer service and private septic or well systems require different due diligence. Federal guidance recommends specialty tests such as sewer scopes or well-water tests when relevant to the property.
When to call a pro
Order a sewer scope if sewer problems are suspected or the property is older. Arrange a well-water test before purchase when the property uses a private well. A certified plumber should diagnose systemic leaks or hidden plumbing failures.
Buyer and seller actions
- Buyer: budget for a sewer scope or well-water test when advised by your inspector, and request recent plumbing invoices if available.
- Seller: fix obvious leaks, replace failed hoses or faulty fixtures, and disclose known septic issues or recent pump-outs.
6. Interior structure, insulation, windows and doors
What to look for: check floors for soft spots or sagging, listen for creaks, look for cracks in walls or ceilings, visual mould signs, condensation on windows, and test locks and seals on windows and exterior doors. In attics, note insulation type and depth.
Why it matters in Ontario
Poor insulation and leaky windows increase energy costs and can cause condensation and mould. Identifying these symptoms helps prioritise comfort and energy upgrades.
When to call a pro
Order a thermal assessment or mould inspection if you find recurring dampness, widespread condensation, or structural movement. Engage a carpenter or structural engineer for sagging floors or major cracking.
Buyer and seller actions
- Buyer: factor comfort upgrades and insulation improvements into your budget, and request documentation for major envelope work.
- Seller: add weatherstripping, repair failed seals, and top up attic insulation where cost-effective to improve perceived value.
7. Safety items, permits and major defects to disclose
What to look for: confirm functioning smoke and carbon monoxide alarms, check stair and railing security, note suspected hazardous materials such as asbestos in very old finishes, and look for signs of unpermitted renovations such as inconsistent finishes or mismatched panels.
Why it matters in Ontario
Ontario law requires working smoke and carbon monoxide alarms. Unpermitted work can affect insurance and resale value. Inspections help identify problems buyers need to consider when negotiating.
When to call a pro
Contact hazardous materials specialists for suspected asbestos or lead, and consult municipal records or a building inspector if you suspect unpermitted structural or major mechanical work.
Buyer and seller actions
- Buyer: ask for disclosure of permits and include offer conditions allowing review of permit records.
- Seller: gather permit documents and service records, disclose known defects, and where possible obtain retroactive permits or documented approvals.
How inspection findings typically affect offers and next steps
Inspection findings usually fall into minor items, moderate repairs, and major defects. Buyers often negotiate credits or request repairs for moderate issues, seek specialist reports for major defects, or in some cases withdraw when an issue is significant and not resolvable. Sellers can reduce surprises by completing pre-listing repairs or obtaining a pre-listing inspection.
Use inspection reports to prioritise immediate safety fixes, gather realistic repair estimates, and document items for negotiated credits rather than promising specific outcomes.
How to find and choose a qualified home inspector in Ontario
Selection criteria: ask about professional association membership, errors and omissions insurance, a sample report and the inspection scope (for example, whether roof, sewer scope, or radon testing are available), references, and approximate fees. Request a sample report to assess the level of detail and photographs you will receive.
When booking, ask what is included, how long the report will take, whether you can attend the inspection, and whether specialty tests are recommended. Start with reputable Ontario inspector directories or ask your real estate representative for vetted local recommendations.
Short seller mini-checklist: quick fixes and disclosure tips
- Clear eavestroughs and downspouts so water flows away from the foundation.
- Replace broken glass, tighten loose railings, and secure loose flooring.
- Patch and paint small drywall defects, and clean visible mould with appropriate products.
- Service the furnace and water heater and gather service invoices.
- Collect permits and receipts for renovations and disclose them in the listing pack.
Local next steps and how Rashminder can help
To schedule professional inspections or get local referrals in Brampton, Caledon and Mississauga, consult reputable Ontario inspector directories or ask a local real estate representative for vetted suggestions. Pair inspection findings with a home valuation and listing strategy using tools on the agent site. For local assistance and to discuss inspection-driven pricing or disclosure strategy, contact Rashminder Chadha.
Frequently asked questions
How is a home inspection different from an appraisal in Ontario?
A home inspection evaluates the condition of the property and identifies defects, while an appraisal determines market value for lending and pricing. Use both reports to inform purchase and financing decisions.
When should I order a home inspection during a purchase or before listing a property in Ontario?
Buyers commonly order inspections after an offer is accepted and subject to inspection. Sellers may choose a pre-listing inspection to surface issues and address them before listing. A pre-listing inspection can speed negotiations but will be visible to buyers if you choose to share results.
Can a seller do a pre-listing inspection in Ontario and do they have to disclose the results?
A seller can order a pre-listing inspection. Ontario disclosure rules require sellers to honestly answer buyer questions and disclose known defects. Keeping records of inspections and repairs helps support disclosure; consult your agent for local disclosure practices.
How do I find a qualified, insured home inspector in Ontario and what should I ask them?
Search for inspectors with professional association membership and errors and omissions insurance, and request a sample report. Ask what is included, whether specialty tests like sewer scopes or radon are available, who will attend, and how long delivery takes. Use reputable Ontario directories and request references.
Key references: Federal guidance on home inspections and the CMHC Homeowner's Inspection Checklist provide authoritative context for using preparatory checklists and the role of professional inspections.
Ready to discuss inspection results, property valuation and listing strategy? Contact Rashminder Chadha to arrange a local conversation about next steps.