409 Alex Doner Drive, Newmarket, ON L3X 1C6

Relax into 5,200 sq ft of finished living space over 3 floors in this beautifully upgraded home. This property offers scale, privacy, and luxury for multi-generational living and is priced at only $545 per sq ft. The main floor is split to add an apartment/studio built with town permit. The self-contained main-floor studio includes a private side entrance, fire-rated door to the main floor, kitchenette, private washroom, gas fireplace, separate electrical panel, and sound-dampened, fire-rated separation. Great for business or parent's independent living on the main level. The rest of the home is equipped with 4+1 bedrooms and 5 more washrooms. This home is designed to adapt to how families live today and grow over time. Maple hardwood floors, porcelain tile entry, and ample closet space provide great function for family and entertaining. Kitchen is refined with quartz counter tops, stainless appliances, gas range, coffee and wine station, dual beverage fridges, and reverse osmosis drinking system. Upstairs offers 4 spacious bedrooms. Each bedroom is equipped with custom closet organizers. The finished basement adds versatility with a sound-dampened music room, a workshop, food pantry, cold cellar, guest bedroom with en suite, and more storage. The private backyard is enclosed by mature 10 ft hedges for privacy rarely found in a suburban setting. The fenced yard features a raised cedar deck and shed/kennel both built on helical peers, an in-ground pool with a chlorine-free copper ionization system, new heater (2025), new pump motor (2026), and robotic cleaner (2023). The attached 2-car garage has storage loft with pull-down stairs and switched lighting. Includes custom-cut LED Christmas lights. This is a home for families who need space, multi-generational living and work flexibility built in.

• Inside Ontario's Greenbelt plan area — Oak Ridges Moraine Conservation Plan

  Greenbelt policy limits new development — confirm permitted uses before planning a build or severance.

  Source: Ontario GeoHub — Greenbelt Designation · as of Sep 2026

• Inside the Oak Ridges Moraine plan area — Settlement Area

  Moraine conservation policy constrains development — confirm this parcel's land-use designation.

  Source: Ontario GeoHub — Oak Ridges Moraine Land Use Designation · as of Sep 2026

Also checked, nothing flagged at this location: flood hazard mapping, conservation-regulated areas, provincially significant wetlands, the Niagara Escarpment plan, areas of natural and scientific interest, rail corridors, 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.