Living in Thornhill, the Markham Side

The short answer

Thornhill straddles Yonge Street and everything east of that line is Markham. It is the city’s oldest established residential area, the closest to Toronto and the best served by transit.

The trade for that convenience is age. Much of the housing stock predates 1990 and the inspection reports look nothing like what you see in Wismer or Cornell.

The Yonge Street split and why it matters

This is the single most common point of confusion for buyers. East of Yonge is the City of Markham. West of Yonge is the City of Vaughan. The two sides share a name, a postal prefix in places and very little else administratively.

Property tax rates differ. Permits go to different city halls. Some school catchments follow the line. Before you compare two Thornhill listings, confirm which municipality each one sits in.

What homes cost

From April to June 2026 the TRREB community named Thornhill, on the Markham side, recorded 20 sales with a median of $702,500 across all property types. Nine of those sales were condo apartments and three were condo townhouses, which pulls the median down, so read the detached row in the table above separately. TRREB also reports nearby Markham side communities such as Royal Orchard, Aileen-Willowbrook, German Mills and Grandview separately and their sales are not included in these figures.

Land value drives this market. On the larger mature lots you are frequently competing with builders and the house standing on the lot is close to irrelevant to what the property is worth. If you intend to live in the house rather than replace it, be clear eyed about that when you write an offer.

Schools

Thornlea Secondary School is among the YRDSB options serving the area, alongside other secondary and elementary schools through both public boards. Catchments in an area split across two municipalities are more complicated than usual, so confirm the boundary for the exact address.

Parks, amenities and daily life

The historic Thornhill village area, parks, ravine trails and long established retail along Yonge Street and Bayview Avenue shape daily life. This is the part of Markham that feels most like an extension of Toronto, because functionally it is.

The honest trade-off: older houses mean older wiring, older plumbing and older windows. Some pockets sit close to busy arterial roads. Both are manageable and both belong in your budget rather than in a surprise after closing.

Transit and the commute

Viva bus rapid transit and YRT run along Yonge Street and Highway 7. TTC connections at Steeles Avenue put the Toronto subway network within reach, which no other part of Markham can say as easily. Highways 404 and 407 are both close.

There is no Stouffville line station on the Markham side of Thornhill (GO Transit timetable, September 2026), so most commuters drive or take YRT and Viva on Yonge Street to connect with the TTC.

Houses for sale in Thornhill, Markham

What comes up for sale on the Markham side of Thornhill is mostly older detached housing from the 1950s through the 1980s, including bungalows, side splits and custom rebuilds, plus condo apartments along Yonge Street and Highway 7. Detached listings here often draw interest from builders as well as buyers who plan to live in the existing house, so the same property can attract very different kinds of offers.

From April to June 2026 TRREB recorded a detached median of about $1,394,000 on 8 sales and a condo apartment median of about $550,000 on 9 sales, against an all property types median of $702,500 across 20 sales. The detached and condo apartment medians each rest on fewer than ten sales.

Live listings across these property types are searched through houses for sale in Thornhill. Tell us what you are looking for and we will watch for the right property. Owners can start with a free home valuation before listing.

Downsizing in Thornhill

Downsizers make up a real share of who buys in Thornhill and the neighbourhood gives them a genuine choice between a smaller freehold house and a condo apartment along the main corridors. From April to June 2026 the detached median was about $1,394,000 against a condo apartment median of about $550,000, a gap of roughly $844,000 for buyers ready to leave a large mature lot behind entirely.

Bungalows and side splits from the 1950s through the 1980s are also part of the mix, so a downsizer who still wants a house rather than a condo has that option without leaving the area. The trade-off is the age of the housing: older wiring, older plumbing and older windows belong in the budget for any of these smaller properties. Transit is the compensation, with Viva, YRT and TTC connections at Steeles putting the subway within reach without a car. For the wider process, see our Markham downsizing guide.

What the Markham side of Thornhill offers

The Markham side of Thornhill offers mature lots, bungalows and side splits as close to Toronto as Markham gets, with YRT and Viva on Yonge Street and Highway 7. Many homes here are ready to renovate or rebuild.

It offers few new builds with a warranty and few large modern floor plans without renovation.