The Short Answer

What's the new development at Highway 48 and 19th Avenue? Markham Council has approved in principle a draft plan of subdivision for a 2,000+ home community near Highway 48 and 19th Avenue (by Treasure Hill and Fieldgate) — including 550 single-detached homes, 817 townhouses, and 700 medium-density units, plus an elementary school site and 29 hectares of parkland envisioned as a city-wide sports park. It's a major new family-oriented community in northeast Markham, though it remains subject to conditions and further planning steps.

Northeast Markham is set for one of its largest new communities in years — a 2,000-plus home development that pairs a substantial supply of family housing with major park and school land. Michael John Lau, a top real estate agent in Markham, breaks down what's planned and what it means for buyers.

Note: This community was approved in principle as a draft plan of subdivision, subject to conditions, and has further planning steps ahead before homes are built. Details can change, and timelines for a project of this scale span years. Confirm current status with the City of Markham. Figures below are as reported.

The Plan: 2,000+ Homes in Northeast Markham

The proposal from Treasure Hill and Fieldgate — for lands at 10982, 11120, and 11274 Highway 48, south of 19th Avenue — envisions a large, complete community. As reported, the housing mix includes:

550 single-detached homes

A substantial number of detached homes — the family housing type in highest demand and shortest supply across Markham. New detached supply in a master-planned community is genuinely notable.

817 townhouses

The largest component: townhomes, offering a more attainable entry point than detached homes while still providing the space families want.

700 medium-density units

An additional 700 medium-density units, with the specific form (the exact housing type within the medium-density portion) still to be determined. This adds further housing variety and density to the community.

More Than Housing: Schools, Parks, and a Sports Park

What makes this development particularly significant is the community infrastructure planned alongside the homes:

An elementary school site

The plan sets aside 2.43 hectares for an elementary school — essential infrastructure for a family-oriented community, and a major draw for buyers with children.

A city-wide sports park

A standout feature: 29 hectares of public parkland envisioned as a city-wide sports park (conveyed through a separate agreement with the landowners). That's a significant recreational amenity — not just for this community, but for Markham as a whole.

Expansive green recreational sports park and athletic fields in Markham
Large-scale public parkland and recreational sports spaces serve as central hubs in northeast Markham's planned communities.

A parkette and commercial uses

The plan also includes a 0.25-hectare parkette, plus commercial uses along Highway 48 and across from the sports park — adding local shopping and services. New road connections (including a north-south road to 19th Avenue and a new intersection on Highway 48) round out the plan.

What It Means for the Market and Buyers

Meaningful new family-housing supply

Over the coming years, this community would add substantial supply of detached, townhouse, and medium-density homes — in a market where family housing supply is tight. New supply of this scale is significant for buyers seeking family homes in Markham.

A complete, amenity-rich community

With a school site, extensive parkland, a city-wide sports park, and commercial uses, this is designed as a complete community — the kind of well-planned, amenity-rich environment that appeals strongly to families and tends to hold long-term value.

Northeast Markham's growth

This development reflects continued family-oriented growth in northeast Markham. For buyers considering this part of the city, it signals a maturing area with new homes and amenities on the way.

A multi-year horizon

Importantly, a community of this scale takes years to plan, service, and build. This is a long-horizon development — relevant for buyers thinking ahead, and a reminder that new homes here won't arrive overnight.

For Buyers Thinking About New Construction

Large master-planned communities like this typically sell homes in phases over several years, often starting with pre-construction sales well before completion. For buyers interested in new construction in northeast Markham, understanding the phasing, timelines, home types, and the buying process for a community like this is key — and it's worth watching as it advances through its planning steps. As with any pre-construction opportunity, careful due diligence matters.

Michael John Lau, one of Markham's leading REALTORS®, helps buyers navigate Markham's new communities and new-construction opportunities — from understanding what's coming to evaluating whether a new home fits their needs and budget. If northeast Markham or new construction interests you, let's talk about what's on the horizon.

Frequently Asked Questions

What is being built at Highway 48 and 19th Avenue in Markham?
Markham Council approved in principle a draft plan of subdivision for a 2,000+ home community by Treasure Hill and Fieldgate — including 550 single-detached homes, 817 townhouses, and 700 medium-density units, plus a 2.43-hectare elementary school site and 29 hectares of parkland envisioned as a city-wide sports park. It's subject to conditions and further planning steps.
When will the Highway 48 development be built?
A community of this scale takes years to plan, service, and build, and it remains subject to conditions and further planning steps. Homes in large master-planned communities are typically sold and built in phases over several years, often starting with pre-construction sales. Confirm current timelines with the City of Markham and the developers.
Is the Highway 48 and 19th Avenue community good for families?
It's designed as a family-oriented community, with a substantial supply of detached homes and townhouses, an elementary school site, a parkette, and 29 hectares of parkland envisioned as a city-wide sports park, plus commercial uses. That combination of family housing and community amenities is exactly what appeals to families — though it remains an evolving, multi-year project.

Explore Markham's New Communities

Michael John Lau, REALTOR® CPA, CMA, helps buyers navigate new communities and new-construction opportunities. Interested in northeast Markham? Let's talk about what's coming.