145 Main Street, Markham, ON L3R 2G7

Rare Opportunity To Own A Landmark Property On Prestigious Main Street Unionville Within The Historic Heritage District. Backing Directly Onto Bruce Creek And Mature Ravine Greenery, This Unique Residence Offers A Rare Blend Of Historic Charm, Privacy, And Estate-Like Living On An Expansive Lot Rarely Found In The Area. The Building Has A Dedicated Fiber Optic Connection, Ideal For Modern Living And Remote Work Needs. Protected By Heritage Conservation And Main Street Character Controls, This Property Represents Exceptional Long-Term Prestige Within One Of Markham's Most Desirable And Iconic Communities. An Irreplaceable Opportunity For Discerning Buyers Seeking Timeless Character, Tranquil Natural Surroundings, And Premier Main Street Unionville Living.

• Inside a conservation-regulated area

  A conservation-authority permit may be required for building, grading or landscaping — confirm scope with the authority.

  Source: TRCA Regulation Limit (2025) · as of Sep 2026

• 159 m from a rail corridor

  Visit at train times to judge noise and vibration for yourself.

  Source: Ontario Railway Network (ORWN) · as of Sep 2026

Also checked, nothing flagged at this location: flood hazard mapping, provincially significant wetlands, the Greenbelt, the Oak Ridges Moraine, the Niagara Escarpment plan, areas of natural and scientific interest, hydro transmission corridors.

Screened against public government mapping at this home’s location — simplified boundaries, not a survey, an appraisal or a legal determination. Confirm anything that matters with the authority named.