A month after the checkered flag, the streets around Unionville GO Station still carry the marks. Fresh asphalt where the temporary circuit's racing line used to run. Sun-faded zip ties on the lamp posts where sponsor banners hung. A grandstand footprint pressed into the grass near the Pan Am Centre, waiting for next August, because there will be a next August, and the one after that, through at least 2030.
For home shoppers near Main Street Unionville, the event's longer-term schedule may be more relevant than the result. The Ontario Honda Dealers Indy at Markham ran its first race on a temporary 3.52-kilometre, 12-turn street circuit built in the eastern precinct of Markham's downtown, bounded by Kennedy Road, Enterprise Boulevard, the Unionville GO tracks, and Highway 407, on August 14 to 16, 2026. Marcus Ericsson won it. For nearby buyers, the circuit's footprint is a more practical detail.
The useful fact is this: the city signed a five-year agreement to host the race, and IndyCar's own organizers have said they're looking to stay in Markham for the long haul. For buyers near the GO station, the regional economic estimate is one consideration alongside race-week effects.
What Actually Happened This August
The circuit sat partially on Unionville GO Station property itself, running past the York University Markham campus and the Markham Pan Am Centre. Roads closed for the full weekend included Enterprise Boulevard East, University Boulevard, YMCA Boulevard, and the stretch of Kennedy Road South between Unionville Gate and YMCA Boulevard, with some access still affected into late August for teardown. GO Transit had already been managing reduced parking at the station for months before race weekend, cutting hundreds of spaces in phases as construction on the track infrastructure began.
Mayor Frank Scarpitti has called it the largest sporting event in York Region's history, and framed the roughly 150,000 visitors and $50 million in projected economic activity as a win for the whole region. That framing describes the projected regional economic activity; a buyer may also want to consider impacts closer to the station.
Regional Spending and Local Impacts
Here's the mechanism worth sitting with. Scarpitti has said directly that Markham doesn't have enough hotel rooms to absorb the roughly 19,000 room nights the race generates, which means the lodging spend flows outward, to York Region communities and as far as Scarborough and North York. Restaurant spending gets described the same way, as a regional lift rather than a neighborhood one.
Noise is another location-specific consideration. A noise study shared with residents ahead of the race projected average sound levels around 75 decibels at 500 metres from the track, a level organizers compared to the Gardiner Expressway. That's not a regional number. That's a number that applies specifically to the streets closest to Kennedy Road, Enterprise Boulevard, and the GO tracks, for the three race days each year during the current five-year agreement.
One Unionville resident described concerns at a public meeting organized by the Unionville Residents Association last fall, saying that no one from the city, Metrolinx, or Honda had reached out to the immediate neighbors before the deal was finalized. Another resident questioned whether the area was even suitable for the noise and traffic a race like this brings. Their comments focused on advance outreach and the event's local impacts.
Race-Weekend Impacts by Location
If you're comparing a property near Unionville GO to one deeper in the heritage core around Main Street Unionville, the relevant question isn't "is this Unionville." Both are, on an MLS listing. The relevant question is proximity to the track footprint itself.
The affected corridor runs along Kennedy Road, Enterprise Boulevard, YMCA Boulevard, University Boulevard, and South Unionville Boulevard, plus the GO station's parking lot and immediate access roads. Main Street Unionville sits roughly two kilometres north of that footprint, outside the closures. The Unionville BIA's executive director, Sonia Chow, has talked about the race weekend as an opportunity for Main Street's restaurants and shops, extending patio hours to welcome visitors rather than absorbing road closures. That's a real distinction. One stretch of Unionville loses parking, faces road closures, and hears an ethanol-fueled field of IndyCars for three days. Another stretch, close enough to share the neighborhood name, gets foot traffic without the disruption.
What the Price Data Doesn't Tell You
This is also, probably not coincidentally, why the market data on Unionville right now reads like three different neighborhoods depending on which source you check. One portal has the median detached home in Unionville at roughly $1.66 million. Another has the average home price closer to $947,000. A third shows a median list price around $737,000, up 7.1 percent over the trailing 30 days, across a mix that includes everything from a $329,000 condo to a $5.3 million estate.
Those aren't contradictions so much as evidence of the same underlying fact the Indy story exposes. "Unionville" as a label spans a heritage core of large detached lots on quiet, sidewalk-free streets and a GO-adjacent corridor of condos and townhomes built for commuters and, now, for people who live two minutes from a temporary Indy circuit three days a year. A median calculated across both tells you less about what you're actually buying than knowing which side of that line the property sits on.
Planning Around the Five-Year Agreement
Scarpitti has said the event will not affect property taxes, and talks between the city and IndyCar reportedly began back in January 2025 with the deal finalized by that July, suggesting this wasn't a rushed or provisional arrangement. Combined with the five-year term and IndyCar's stated interest in staying long-term, the more realistic planning assumption for anyone buying near the GO station corridor is that mid-August road closures, parking loss, and race weekend noise will recur during the current five-year agreement, rather than being limited to the construction phase.
That's not a reason to rule the area out. It's a reason to ask specific questions before you write an offer, the same way you'd ask about a flight path or a rail corridor anywhere else.
A Few Questions Worth Asking Directly
Is the race definitely coming back next August? The current agreement runs five years, and organizers have publicly indicated interest in making Markham a long-term home rather than a one-year stop, so the more prudent assumption is yes, through at least 2030.
Does this affect the whole Unionville area or just parts of it? Just parts of it. The closures and noise studies apply to the corridor bounded by Kennedy Road, Enterprise Boulevard, the Unionville GO tracks, YMCA Boulevard, and Highway 407. Main Street Unionville, roughly two kilometres north, has not been part of the closure footprint.
Will this show up in my property taxes? The mayor has stated the event will not impact property taxes. That doesn't address noise or access, which is the more relevant question for someone living inside the affected corridor.
Does the GO station continue to operate outside race weekend and its setup and breakdown windows? Parking has been reduced in phases as track infrastructure went in, and some closures extended into late August for teardown. Outside the race weekend and its setup and breakdown windows, the station has continued to operate on the Stouffville line.
The Takeaway
A neighborhood-wide average price or a single "buyer's market" headline can't tell you whether you're buying two minutes from an annual motorsport circuit or deep in a heritage district that experiences the same week as a busy patio season. The Honda Indy's five-year deal means race-week effects are a recurring consideration for a specific slice of Unionville during the agreement, even after the grandstands come down each year. Knowing exactly where that slice starts and ends is the kind of detail that belongs in the conversation before an offer, not after a race weekend surprises you.
If you're weighing a property near Unionville GO against one closer to Main Street, or trying to make sense of why three listing sites show three different numbers for the same neighborhood, Bryan Wong-Lim can walk through the specific streets, not just the aggregate. Let's Connect.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
