Second units and garden suites
8% of the 65 residential lots on Warden Ave screen as likely to allow a garden suite; 9% a second unit in the house.
Residential lots by second-units screen| Likely allows additional units | 0 | 0% |
|---|
| Likely, with constraints | 6 | 9% |
|---|
| Check zoning / further investigation | 59 | 91% |
|---|
| Unlikely | 0 | 0% |
|---|
- Garden suite likely: 5 lots (8%).
- Third unit likely: 6 lots (9%).
Ontario's Planning Act (s. 35.1) and O. Reg. 462/24 allow up to three units on most serviced urban house lots; the municipal by-law sets the rest. Lot depth is estimated from lot lines, not a survey.
Source: Province of Ontario and the municipality, Planning Act s. 35.1, O. Reg. 462/24 and the municipal by-law, screened lot by lot by LSG Realty (2026-11-01); York Region, Regional Official Plan 2022, Map 1 (Urban Area, Towns and Villages) (2026-11-01); Statistics Canada, 2021 Census census subdivisions (cartographic boundary file) (2026-11-01); York Region, Parcel (property boundaries across York Region) (2026-11-01). Screened 2026-11-02.
Lot sizes
Median lot 19,326 m² (208,023 sq ft); half of the lots are between 4,926 m² and 63,958 m² (65 lots).
Source: York Region, Parcel (property boundaries across York Region) (2026-11-01).
Flood, Oak Ridges Moraine and Greenbelt
- Partly or wholly in a conservation authority regulated area (flood and erosion hazards): 0 lots (0%).
- In the Oak Ridges Moraine countryside, natural core or linkage areas: 0 lots (0%).
- In the Greenbelt's protected countryside or urban river valleys: 0 lots (0%).
Source: Toronto and Region Conservation Authority, TRCA Regulated Area (Regulation Limit 2025, O. Reg. 41/24) (2026-11-01); Lake Simcoe Region Conservation Authority, Regulation Limit (O. Reg. 41/24) (2026-11-01); Province of Ontario, Oak Ridges Moraine land use designations (2017 Plan) (2026-11-01); Province of Ontario, Greenbelt designations (2017 Plan) (2026-11-01).
Active development applications
28 active applications (rezonings, site plans, subdivisions, minor variances, consents) near Warden Ave.
- 8500 Warden Avenue · Site Plan (Minor) · In Progress · Regional review: Review, Awaiting Comments · 2025-11-27 · 25.141921.000.00.SPC (York Region file SP.25.M.0155)
- Address not published · Site Plan · On Hold · Regional review: Intake, Cursory Evaluation · 2025-10-02 · 24-020 Markham (York Region file SP.25.M.0131)
- 10231 Warden Avenue, 10233 Warden Avenue · Zoning By-law Amendment · In Progress · Regional review: Intake, Cursory Evaluation · 2025-01-13 · 24.198202.000.00.PLAN (York Region file ZBA.25.M.0005)
- 10233 Warden Avenue, 10231 Warden Avenue · Draft Plan of Subdivision · In Progress · Regional review: Intake, Geo-Referencing · 2025-01-13 · 24.198207.000.00.PLAN (York Region file SUBP.25.M.0001)
- 10231 Warden Avenue, 10233 Warden Avenue · Local Official Plan Amendment (Approval) · In Progress · Regional review: Intake, Cursory Evaluation · 2025-01-13 · 24.198202.000.00.PLAN (York Region file LOPA.25.M.0004)
Source: York Region, Active Development Application Boundaries (York Region's review of applications in its nine municipalities) (2026-10-27). Within 150 m of the street's lots.
Building permits, last 12 months
Markham does not publish building permits as open data that we can show.
Upcoming residential projects
25 proposed, approved or under-construction projects with about 15,152 units published.
- 8500 Warden Avenue, Southwest corner of Warden Avenue and Highway 7 · Proposed: 21-storey, 372-unit apartment building
- 10506 Warden Avenue, 10508 Warden Avenue · Proposed: townhouse development (units not published)
- · Approved: condominium (units not published)
- 8500 Warden Avenue · Proposed: about 3,049-unit apartment building, up to 49 storeys
- 8293 Warden Avenue, 8303 Warden Avenue · Proposed: 507-unit apartment building, up to 20 storeys
From municipal open data. Not a listing or an offer to sell; details change.
Source: York Region, Planning applications and building permits (residential projects) (2026-10-27). Within 300 m of the street's lots.
Rapid transit within 800 m
- Unionville GO · GO station · Stouffville · 750 m
Source: TTC, Metrolinx and York Region Transit, Rapid transit stations (the map's transit layer) (2026-10-31).
Everyday needs
Everyday Needs score 52/100 · walking 35 · driving 68 (average over 60 residential lots)
- 23% of lots within a 10-minute walk of a grocery store
- 84% of lots within a 10-minute walk of a transit stop
Nearest from the middle of Warden Ave:
- Grocery store: 35 min walk (Village Grocer) · 7 min by car (No Frills)
- Pharmacy: 37 min walk (Shoppers Drug Mart) · 8 min by car
- Transit stop: 2 min walk (Warden Ave at Glenbourne Park Dr (TTC))
- Shopping centre: 35 min walk (王府井) · 8 min by car
- Emergency department: over 60 min walk · 26 min by car (North York General Hospital)
- Hospital: over 60 min walk · 25 min by car (Shouldice Hospital)
Source: LSG Realty, Everyday Needs score (LSG's own travel-time estimate) (2026-11-02); © OpenStreetMap contributors, ODbL, OpenStreetMap (Geofabrik Ontario extract): roads, footpaths, supermarkets and grocery stores, pharmacies, shopping centres and department stores, hospitals and emergency departments — Open Database Licence (ODbL) 1.0 (2026-11-02); Ontario Ministry of Health, Ministry of Health Service Provider Locations (MOHSERLO): hospital sites — Open Government Licence – Ontario (2026-11-02); City of Toronto (TTC), Merged GTFS – TTC Routes and Schedules (stops) — Open Government Licence – Toronto (2026-11-02); Metrolinx (GO Transit), GO Transit GTFS (stops) — Metrolinx Open Data Licence (2026-11-02); Metrolinx (UP Express), UP Express GTFS (stops) — Metrolinx Open Data Licence (2026-11-02). LSG estimate from open data: walking on mapped streets and paths at 4.8 km/h; driving at typical weekday rush-hour road speeds (not live traffic). Times are for the 200 m square around each address. Places can open, close or move; check before you rely on one. Places and paths © OpenStreetMap contributors, ODbL.
Public schools
- Unionville High School · Secondary · York Region DSB · 340 m
- Milliken Mills Public School · Elementary · York Region DSB · 530 m
- Coledale Public School · Elementary · York Region DSB · 570 m
- St Justin Martyr Catholic Elementary School · Elementary · York CDSB · 650 m
YRDSB school locator (York Region District School Board)YCDSB school locator (York Catholic District School Board)
Source: Ontario Ministry of Education, Ontario public school contact information (placed by Statistics Canada ODA addresses) (2026-10-29). School catchments change; confirm with the board's school locator.
Water and sewer servicing
Regional capacity assigned; local figure not published · Markham (urban area)
Served by the York Durham Sewage System. York Region assigned about 88,348 persons of new capacity to the cities and towns on the York Durham Sewage System (Dec 11, 2025), bringing total available capacity to 286,992 persons, up to 13 years of growth. The City's own remaining allocation: Not published in the reports we could read. Report.
Source: Province of Ontario (Land Information Ontario), Municipal Boundary – Lower and Single Tier (2026-11-01); York Region, Regional Official Plan 2022, Map 1 – Regional Structure: Urban Area (2026-11-01); York Region, Regional Official Plan 2022, Map 1 – Regional Structure: Towns and Villages (2026-11-01). York Regional Council highlights, Dec 11, 2025: 2025 Servicing Capacity Assignment (2025-12-11).
Neighbourhood profile (2021 Census)
- Population (2021)
- 20,437
- Median age
- 39.6
- Median household income (2020)
- $87,900
- Owner households
- 68%
- Households with children
- 34%
Source: Statistics Canada, Census of Population 2021, Census Profile (dissemination areas) (2021-05-11). 12 dissemination areas; medians and shares averaged by population.
