Toronto Knob-and-Tube Wiring Buyer Guide | Sam Kamra

Confirm the system instead of guessing from age

The direct answer is that a Toronto buyer should have a Licensed Electrical Contractor assess suspected knob-and-tube wiring, ask the insurer for written requirements before the agreement becomes firm, and verify any completed work through Electrical Safety Authority records and a Certificate of Acceptance. ESA says knob-and-tube was used in homes from the early 1900s through the 1940s, but the construction date alone does not establish what remains today.

Older houses often contain more than one generation of wiring. Visible porcelain knobs in an attic or basement may identify part of a system, while concealed circuits, disconnected remnants and later additions require further investigation. Do not remove panel covers, pull devices or enter unsafe areas. Sam Kamra encourages buyers to record what was observed, what remains unverified and what a qualified electrical professional concluded.

Use an electrical assessment for electrical questions

A general home inspection can flag visible concerns, but ESA distinguishes a focused electrical assessment from a home inspection. Ask a Licensed Electrical Contractor familiar with older systems to evaluate the service, panel, branch circuits, accessible conductors, protection, connections, grounding, receptacles and evidence of deterioration, overheating, damage or unsuitable alterations within the authorized scope.

ESA explains that the Ontario Electrical Safety Code is not retroactive and that maintained knob-and-tube wiring is not automatically prohibited merely because current installation rules no longer include it. That does not make every installation acceptable. Condition, loading, modifications and insurer requirements vary by property. Ask the contractor for a written report that separates urgent defects, recommended improvements, inaccessible areas and optional modernization.

Resolve insurance before relying on a closing plan

ESA notes that many insurers may decline to provide or renew coverage for homes with knob-and-tube wiring, and some may require replacement before coverage begins. Contact the buyer's intended insurer or broker early, disclose the available facts, and obtain written confirmation of requirements, deadlines, documents, exclusions and any temporary conditions. A seller's existing policy does not guarantee equivalent coverage for the buyer.

Give the insurer the contractor's assessment, the remaining-wiring estimate and any ESA documents they request. Ask whether a Certificate of Acceptance is required and whether partial replacement is acceptable. Also confirm the lender's insurance deadline, because delayed or conditional coverage can affect funding and closing. Sam Kamra's practical property guidance can help organize transaction questions, while additional buyer resources support the wider preparation file.

Build a complete and documentable work scope

If repair or replacement is recommended, obtain detailed quotations from Licensed Electrical Contractors. Compare circuits covered, access openings, panel or service work, grounding and protection, device replacement, patching, painting, permits or notifications, inspections, schedule and exclusions. Rewiring can interact with plaster, insulation and suspect asbestos-containing materials, so coordinate hazards and restoration rather than treating the electrician's price as the entire project budget.

ESA says that, in Ontario, hired home electrical work must be performed by a Licensed Electrical Contractor. Almost all electrical work requires an ESA notification, which creates a permanent record and triggers review. A building permit is not the same as an electrical notification. The person performing the work files the notification and requests inspections; after compliant work passes, ESA issues a Certificate of Acceptance to the notification holder.

Match the offer and final visit to verified facts

Ask the real-estate professional and lawyer how to structure access, assessment, insurance and financing conditions, representations, repair obligations and closing timing. If the seller agrees to electrical work, define the contractor, scope, ESA notification, inspection result, certificate delivery and responsibility for wall restoration. Avoid a vague promise to 'remove knob and tube' without a method for confirming all affected circuits.

At the final visit, check agreed work and accessible finishes against the contract without opening electrical equipment. Use the Toronto buyer final pre-closing visit checklist for the broader handover. Public evidence helps when interpreted responsibly; CB Herald's discussion of Sam Kamra and public LTB data illustrates that principle, while Barchart's report on the RealEstateBuyer.ca launch covers Sam Kamra's broader property-services work. The conclusion is simple: confirm extent, secure insurance and document qualified work. Bring the evidence to the contractor, insurer, lender and lawyer before committing.

Questions and answers

Buying a Toronto Home with Knob-and-Tube Wiring FAQ

Does an older Toronto home automatically have knob-and-tube wiring?

No. ESA says the method was used from the early 1900s through the 1940s, but homes may have been partly or fully rewired. A qualified assessment is needed to determine what remains.

Is existing knob-and-tube wiring automatically illegal in Ontario?

No. ESA says the Electrical Safety Code is not retroactive and that properly maintained knob-and-tube wiring can remain. Each installation still needs assessment for its condition, alterations and current use.

Can a regular home inspection replace an electrical assessment?

No. A home inspection can flag visible issues, but ESA recommends a Licensed Electrical Contractor assessment for a home with knob-and-tube wiring because it focuses on the electrical system.

Will every insurer cover a home with knob-and-tube wiring?

No. ESA notes that many insurers may refuse or condition coverage, and some require replacement. Buyers should obtain their own insurer's requirements in writing before waiving relevant conditions.

What document shows notified electrical work passed ESA review?

ESA issues a Certificate of Acceptance after notified work has been reviewed and passed. Buyers should request a copy and match it to the scope and property.

Authoritative sources

This article provides general information, not legal, tax, mortgage or financial advice. Confirm figures and eligibility with the appropriate professional and current official sources.