Treat “has a suite” and “approved suite” as different statements
A listing, rental history or seller description can show that a space has been used as a separate dwelling. It does not by itself prove that zoning permitted the unit, that required permits were obtained, or that final inspections were completed. The useful question is what the municipal record shows for this exact property.
Ask for documents before relying on rental income
Request the building-permit history, approved plans if available, inspection/final records, any municipal suite registration or licence, and documents for major electrical, plumbing or gas work. Compare those records with what is physically present. A renovated kitchen, added bedroom or separate entrance built after the last approved plan can be a clue that further review is needed.
Check zoning separately from construction approval
A suite can face two different problems: the dwelling form may not be permitted by current land-use rules, or the form may be allowed while the construction lacks approval. Current provincial housing legislation can also change what is permitted today without retroactively proving that old work was built with permits.
Detached units need their own due diligence
A garden suite, coach house, laneway house or other detached dwelling can have different setbacks, lot-coverage, access, parking, servicing and development-permit rules from an internal secondary suite. Do not use the approval status of the basement suite as evidence that a backyard unit is also lawful.
Questions worth resolving during conditions or due diligence
- Which municipality actually governs the parcel?
- What is the current zone and dwelling type?
- How many dwelling units does the municipal record recognize?
- Are there open permits, unresolved inspections or enforcement files?
- Does the property use municipal sewer/water or onsite servicing?
- Are there title covenants, strata restrictions, flood/hazard, heritage or agricultural constraints that affect the use?
If the answer affects financing, insurance, rental-income assumptions or the purchase price, obtain the records and appropriate professional advice rather than relying on the listing description.