Zoning and official plan
Confirm the zone, permitted uses, setbacks, height and lot coverage with the municipality. Ask whether a minor variance or rezoning would be needed for your plans.
Servicing
Is municipal water and sewer at the lot line? If not, you may need a well and septic system, which depend on soil and lot size.
Agencies and overlays
Lots near creeks, the lake or the escarpment may fall under a conservation authority or the Niagara Escarpment Plan. The Greenbelt also limits development in some areas. These can add permits and time.
Approvals in place
If a lot is sold as permit ready, get copies of the approvals and confirm them with the city.
Conditions in your offer
Give yourself time to do this work. A due diligence condition is common on land purchases.
This guide is general information, not legal, tax or financial advice. Rules change, so confirm details with the right professional.