How will the Buttonville Airport industrial park affect nearby Markham homes?The former Buttonville Airport, a 169-acre site along Highway 404 that closed at the end of 2023, is planned by owner Cadillac Fairview as an industrial park of about 3 million sq ft across 11 buildings. Reported timelines show site servicing from 2027, first construction in 2028 and occupancies as early as 2029. Nearby owners trade aircraft noise for construction and truck traffic, alongside new jobs close to home.
For decades, small planes over Buttonville, Cachet and Unionville were part of daily life. The site’s next chapter will look and sound very different.
Michael John Lau, a REALTOR® with the Kaizen Real Estate Team, one of the most active real estate teams in Markham and York Region, follows major land changes so clients can plan around them.
The plan at a glance
| Item | Reported detail |
|---|---|
| Site | About 169 acres along Highway 404 |
| Owner | Cadillac Fairview |
| Plan | About 3 million sq ft in 11 buildings, 42,000 to 836,000 sq ft each |
| Earlier concept | Mixed use with condo towers, later changed to industrial |
| Timeline | Servicing 2027, first buildings 2028, occupancy as early as 2029 |
What changes for neighbours
- Noise: aircraft noise is gone; construction and truck noise will replace some of it during build-out.
- Traffic: more trucks and employee trips near Highway 404, 16th Avenue and Woodbine.
- Jobs: new employment close to home for some residents.
- Views and buffers: watch for landscaping, berms and setbacks in approved plans.
Possible effects on home values
Large employment areas can support demand from people who want to live close to work, while truck routes and building scale can weigh on homes right next to the site. The effect usually depends on the street: homes facing the site or a truck route differ from homes a few blocks inside a neighbourhood.
Own a home near Buttonville?
Michael John Lau can explain how nearby changes may affect your plans.
Request a home evaluationSearch Markham homesPrefer to talk? Call the Kaizen Real Estate Team at (647) 370-8885.
How to follow the process
- Watch City of Markham planning notices and public meetings for the site.
- Look for traffic and noise studies in application materials.
- Check proposed truck access points and road improvements.
For buyers and sellers nearby
Buyers can weigh a lower-key street a few blocks away against a home backing onto the site. Sellers can highlight the end of aircraft noise and nearby jobs. Ultimately, the decision is yours. The goal is to make sure you have all the information as the site changes.
Big changes nearby are easier to plan for when you know the timeline. Call the Kaizen Real Estate Team at (647) 370-8885 or book a consultation.
Frequently asked questions
What is planned for the Buttonville Airport site?
An industrial park of about 3 million sq ft across 11 buildings.
How big is the site?
About 169 acres along Highway 404.
When will construction start?
Reported timelines show servicing from 2027 and first buildings in 2028.
Will there be condos on the site?
The earlier mixed-use plan with condos was changed to industrial.
Will it increase traffic?
Likely, especially trucks near Highway 404, 16th Avenue and Woodbine.
How will it affect nearby home values?
It depends on the street; homes facing the site or truck routes may be affected differently.
Michael John Lau and Neeraj Moolchandani are licensed REALTORS® with the Kaizen Real Estate Team, eXp Realty, Brokerage, 9763 Markham Rd, Markham, ON L6E 1A4. Licence #4784577. Call (647) 370-8885. Site size, ownership, building count and timeline are from blogTO (September 2026). Plans and timelines can change; follow City of Markham planning notices. This article is general information only and is not financial, legal or tax advice. Not intended to solicit buyers or sellers currently under contract with another brokerage.
