181 Clark Avenue, Markham, ON L3T 1T3

Welcome to an extraordinary opportunity in the highly sought-after Thornhill (Markham) corridor. Perfectly positioned directly facing a serene park, this exceptional backsplit home offers a rare combination of tranquil family living and immense future value (zoning RM1). Set on a massive, highly coveted 50 x 260 ft lot-a true rarity in the GTA-this property features an impeccably maintained, breathtaking backyard garden that serves as your private oasis, while providing unmatched long-term investment potential further amplified by the upcoming Yonge North Subway Extension at Yonge & Clark. Nestled on a quiet dead-end street in a premier family neighbourhood, the immaculate interior boasts completely carpet-free living, highlighted by pristine maple hardwood floors and sophisticated glass handrail accents that elevate the modern aesthetic. The functional 4+1 bedroom, 3. 5-bathroom layout is complete with a versatile in-law suite --- featuring an added kitchen and a stylish bar in the basement --- along with three separate side entrances, offering incredible flexibility for multi-generational living or rental income. Highlights include an aluminum garage door, a private sauna, and a cozy electric fireplace. A timeless family sanctuary combining a rare oversized lot, stunning outdoor spaces, and elite future potential in a prime transit-oriented location.

• 76 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, conservation-regulated areas, 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.