Buyer due diligence for an older Canadian home
Sequenced by when each question actually needs an answer. Nothing here is legal advice, an inspection, or a statement about any particular property.
Before you write the offer
Days before submitting
Everything here is available without access to the property, and it shapes the conditions you ask for.
What year was the home actually built, according to assessment or title records rather than the listing?
Listings frequently round or repeat an earlier error. The assessment roll is the more reliable figure.
Is the property listed on a municipal heritage register or inside a heritage conservation district?
Designation can restrict exterior alterations and window replacement. Municipal heritage planning staff can confirm.
What does the municipal permit history show, and does it match the renovations described in the listing?
Permit searches can take days to weeks, so start early. Gaps are common and are not automatically a problem — they are a question.
Has your insurance broker seen the listing photos of the panel, plumbing, roof, and heating appliance?
An early conversation avoids discovering an insurance obstacle after conditions have been waived.
What conditions do you need, and how long do they realistically take?
Long-term radon testing, oil-tank scans, and engineer assessments do not fit inside a short condition period.
Inspection and specialist assessments
Inside the inspection condition
A general home inspection is visual and non-invasive. It is a triage step that tells you which specialists, if any, you need.
Is your inspector experienced with homes of this era in this region?
Ask for sample reports on comparable properties. Era-specific familiarity matters more than a long feature list.
Will the inspector open the panel, and what will they report about wiring type per circuit?
If the inspection is limited on electrical, plan for a licensed electrician's assessment as a follow-up.
Has the drain lateral been camera-scoped, and can you keep the recording?
Drain condition is not predictable from age and is not visible in a standard inspection.
Have suspect materials been sampled and analysed, rather than identified by eye?
Asbestos and lead can only be established by laboratory analysis of samples taken by a qualified assessor.
Is there any sign of current or historic fuel-oil storage on the property?
Look for fill and vent pipes, patched siding, or unexplained piping. Documentation of removal is what lenders and insurers accept.
If movement or structural questions arise, who is qualified to answer them?
Structural opinions belong to a professional engineer, not to a general inspection.
Documents to request
Inside the condition period
Ask for the paper. A written record is what an insurer, lender, and your future buyer will accept.
Invoices and permits for electrical, plumbing, roofing, heating, and structural work.
Dated, on contractor letterhead, with scope described. A verbal assurance is not documentation.
Any prior inspection reports, engineer letters, or environmental assessments.
Sellers are not always obliged to provide these, but asking costs nothing.
Radon test results, with the test duration and measurement method stated.
Health Canada's guidance is based on long-term measurement; short screening tests are indicative only.
Water and septic records if the property is rural.
Well record, yield, potability and chemistry results, septic permit, and pump-out receipts.
Insurance claims history where available.
Prior water claims in particular affect both future premiums and eligibility.
Insurance and financing
Run in parallel, not afterwards
On older Canadian homes this is the most common source of late surprises, and it is entirely avoidable by starting early.
Will a broker put a written quote or binder in place based on the actual system details?
Underwriting turns on wiring type, plumbing material, roof age, and heating — not on the build year.
Are any conditions attached to coverage, and what is the deadline to satisfy them?
Conditions such as an electrical assessment are workable when you know about them early.
Does the lender attach any condition based on the appraisal or inspection?
Confirm inside your financing condition window, in writing.
What is your capital reserve for systems within ten years of end of expected service life?
This is budgeting, not a prediction of failure. Use your own numbers.
Common buyer questions
- Is a general home inspection enough for a pre-1990 Canadian home?
- A general home inspection is a visual, non-invasive assessment. It is a good triage step, but it does not include laboratory testing, drain scoping, structural engineering opinions, or radon measurement. Treat it as the step that tells you which specialists you need, rather than the final word.
- How early should I contact an insurance broker?
- Before your conditions expire, and ideally while you are still preparing the offer. Canadian home insurers commonly underwrite on wiring type, plumbing material, roof age, and heating appliance. Discovering a coverage obstacle after waiving conditions is the outcome to avoid.
- Should I walk away from a home with knob-and-tube wiring or Poly-B plumbing?
- That is a decision about price, financing, insurance, and your own tolerance — not a question this site can answer for you. What matters is establishing what is actually present, what remediation would involve, and whether an insurer will write the policy on terms you accept, all before your conditions expire.
Evidence note
- Sources
- CMHC — Homebuying step by step
- Health Canada — Radon guidance for homeowners and buyers
- Provincial and municipal building and permit authorities (varies by location)
- Jurisdiction
- Canada. Real-estate contract terms, disclosure obligations, and condition practices differ by province — confirm locally.
- Applies to
- Buyers of low-rise residential property in Canada, particularly homes built before 1990.
- Last reviewed
- August 2026
- Limitations
- This is a general sequencing aid, not legal, insurance, or financial advice, and not a substitute for a professional inspection. It does not cover every question relevant to every transaction.
- What you should verify
- Condition wording and deadlines with your lawyer or notary, coverage with a licensed broker, and property condition with qualified inspectors and trades.