Dufferin St, King: what could be built

Second units and garden suites

0% of the 249 residential lots on Dufferin St screen as likely to allow a garden suite; 0% a second unit in the house.

• Garden suite likely: 0 lots (0%).
• Third unit likely: 0 lots (0%).

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 20,039 m² (215,698 sq ft); half of the lots are between 2,922 m² and 64,323 m² (249 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): 49 lots (20%).
• In the Oak Ridges Moraine countryside, natural core or linkage areas: 53 lots (21%).
• In the Greenbelt's protected countryside or urban river valleys: 48 lots (19%).

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

23 active applications (rezonings, site plans, subdivisions, minor variances, consents) near Dufferin St.

• 13415 Dufferin Street · Site Plan · In Progress · Regional review: Intake, Data Processing · 2025-11-25 · SPD-25-16 (York Region file SP.25.K.0153)
• 13376 Dufferin Street · Zoning By-law Amendment · In Progress · Regional review: Approvals, Awaiting Approval · 2024-01-25 · Z-2023-05 (York Region file ZBA.24.K.0010)
• 1461 18th Sideroad · Site Plan (Minor) · In Progress · Regional review: Approvals, SP/ENG Approval · 2023-04-03 · ORM-23-01 (York Region file SP.23.K.0064)
• 18815 Dufferin Street, 18781 Dufferin Street · Consent to Sever (Consent for Easement) · In Progress · Regional review: Review, Awaiting Response · 2022-10-05 · 04-B-22 (York Region file CONS.22.K.0085)
• 12767 Dufferin Street · Site Plan (Minor) · In Progress · Regional review: Review, Awaiting Response · 2022-09-22 · SPD-22-64 (York Region file SP.22.K.0268)

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

King does not publish building permits as open data that we can show.

Upcoming residential projects

9 proposed, approved or under-construction projects with about 189 units published.

• 13630 Dufferin Street · Approved: 6-unit residential subdivision
• 13236 Dufferin Street · Proposed: 5-storey, 69-unit apartment building
• 13330 Dufferin Street · Proposed: 34-unit residential development
• 13130 Dufferin Street, 13176 Dufferin Street · Proposed: townhouse development (units not published)
• 14923 Dufferin Street · Proposed: 2-storey residential development (units not published)

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

No subway, GO, LRT or rapid bus station within 800 m.

Source: TTC, Metrolinx and York Region Transit, Rapid transit stations (the map's transit layer) (2026-10-31).

Everyday needs

Everyday Needs score 30/100 · walking 6 · driving 54 (average over 220 residential lots)

• 6% of lots within a 10-minute walk of a grocery store

Nearest from the middle of Dufferin St:

• Grocery store: 58 min walk (Metro) · 12 min by car
• Pharmacy: over 60 min walk · 12 min by car (Shoppers Drug Mart)
• Transit stop: over 60 min walk
• Shopping centre: over 60 min walk · 13 min by car (Upper Canada Mall)
• Emergency department: over 60 min walk · 22 min by car (Southlake Regional Health Centre)
• Hospital: over 60 min walk · 23 min by car (Southlake Health)

Local bus stops in York Region, Mississauga and Brampton (YRT/Viva, MiWay, Brampton Transit) are not in our data yet, so transit is left out of the walking score there.

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

• Holy Name Catholic Elementary School · Elementary · York CDSB · 290 m
• King City Public School · Elementary · York Region DSB · 590 m

YCDSB school locator (York Catholic District School Board)YRDSB school locator (York Region 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

Private services (well and septic) · King: Rural area (outside the urban area and towns and villages) (90% of lots)

York Region's Official Plan provides full municipal water and sewer to the Urban Area and to Towns and Villages where facilities exist. Hamlets and rural lots are serviced by individual private wells and septic systems; there is no municipal allocation to apply for. 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 Region Official Plan 2022 (June 2024 office consolidation), policies 5.4.3, 6.4.5, 6.4.13 (2024-06-24).

Neighbourhood profile (2021 Census)

Population (2021)

5,926

Median age

43.1

Median household income (2020)

$146,000

Owner households

85%

Households with children

49%

Source: Statistics Canada, Census of Population 2021, Census Profile (dissemination areas) (2021-05-11). 6 dissemination areas; medians and shares averaged by population.