Design Catalogue

12 Metroburb Narrow





Metroburb Narrows were widely built between the 1980’s to the early 2000’s



The Metroburb generation are commonly found in the suburban neighbourhoods of Etobicoke, Scarborough and North York - as well as surrounding GTA municipalities like Mississauga, Brampton, Markham, Richmond Hill and Vaughan.

The Metroburb Narrow is similar to the Metroburb Semi, characterized by a high lot coverage and attached “snout” garage facing the street, typically sized for one or two cars depending on lot frontage. The front elevation is dominated by the garage and driveway, usually with a recessed front entrance to one side opening to an interior stair. Some variations of this type are three storey buildings, with living spaces on the second floor.

The large building size relative to the lot dimensions makes it challenging to propose substantial additions or expansions to the house without exceeding the lot coverage and density regulations (floor space index) for the site.




Real Estate Listings



Presented below are a few examples of the Metroburb Narrow type for your viewing and pricing reference.

Andona Cres, Scarborough
Lot Size: 22.3 x 110.8 ft
For Sale: $980,000 (Jun 2022)
Wharton Sq, Scarborough
Lot Size: 29.5 x 100.0 ft
For Sale: $1,380,000 (May 2022)

Chad Cres, Scarborough
Lot Size: 20.0 x 112.0 ft
For Sale: $1,000,000 (May 2022)

Via Cassia Dr, North York
Lot Size: 20.2 x 98.6 ft
For Sale: $998,000 (Jul 2022)

Alan Ave, Etobicoke
Lot Size: 25.0 x 127.0 ft
For Sale: $1,800,000 (May 2022)


Trapper Cres, Mississauga
Lot Size: 30.0 x 125.0 ft
For Sale: $1,200,000 (May 2022)
Lucerne Cres, Mississauga
Lot Size: 25.0 x 100.2 ft
For Sale: $1,240,000 (May 2022)
Seabreeze Dr, Mississauga
Lot Size: 39.1 x 112.8 ft
For Sale: $1,150,000 (Jun 2022)

Robert Green Cres, Vaughan
Lot Size: 25.0 x 101.7 ft
For Sale: $1,400,000 (Jun 2022)
Justus Dr, Richmond Hill
Lot Size: 35.1 x 108.3 ft
For Sale: $1,585,000 (Apr 2022)

Pricing as of July 2022


Neighbourhood Aerial



Aerial view of a sample neighbourhood with a Metroburb Narrow highlighted in orange.




Existing House Plans




Housing Option: Low



This scheme is limited to interior renovations within the existing building footprint.

The building is divided into three small units on each floor. The existing front entrance is partitioned as shared entrance foyer and the existing stair is fire separated to serve only the second floor unit. Separate access to the basement unit is provided with a new entrance off the side yard and this stair is also fire separated from the ground floor unit.

The basement includes a small shared laundry and mechanical room to reduce the total electrical load of the building, save on upfront construction cost and increase the usable floor area in each unit.

Occupancy and Density:
Total Unit Count = 3 Units
Total Occupancy = 4 Beds
Lot Area = 310.2m2
FSI =0.43

Housing Stats:
Second Floor Area = 70.0m2
Ground Floor Area = 64.3m2
Basement Floor Area = 67.5m2 (excluded from FSI)
Total Floor Area = 201.8m2






Housing Option: Medium



This scheme is limited to minor additions, accessory dwelling units (Garden Suite or Laneway Suite) and renovations within the existing building footprint, and may include the scope of work included in the ‘LOW’ option.

The existing garage is insulated and converted to an additional bedroom for the ground floor unit. The roof of the garage could also be rebuilt with a large terrace for the upper unit. The backyard is partially excavated to replace the basement window well and provide a sunken courtyard and replace the side yard entrance as direct access for the basement suite. The side yard entrance is kept for access to the shared laundry and mechanical room and provides a second means of egress for the basement suite.

Occupancy and Density:
Total Unit Count = 3 Units
Total Occupancy = 5 Beds
Lot Area = 310.2m2
FSI =0.50

Housing Stats:
Second Floor Area = 70.0m2
Ground Floor Area = 84.4m2
Basement Floor Area = 67.5m2 (excluded from FSI)
Total Floor Area = 221.9m2





Housing Option: High



This scheme is limited to major additions or a combination of minor additions, accessory dwelling units (Garden Suite or Laneway Suite) and renovations within the existing building footprint, and may include the scope of work included in the ‘LOW’ and ‘MEDIUM’ option.

The lot depth accomodates a small one bedroom garden suite in the rear yard.

Housing Stats:
Second Floor Area = 70.0m2
Ground Floor Area = 84.4m2
Basement Floor Area = 67.5m2 (excluded from FSI)
Garden Suite Area = 79.5m2 (excluded from FSI)
Total Floor Area = 301.4m2

Occupancy and Density:
Total Unit Count = 4 Units (3 + Garden Suite)
Total Occupancy = 6 Beds
Lot Area = 310.2m2
FSI = 0.50

Note: This garden suite design has not been revised to match the updated Garden Suites By-law regulation with more permissive minimum side setbacks at 10% of lot frontage (or at least 0.6m) for walls without openings






Housing Option: New



The “New” Options propose demolition of the existing house and the construction of a new multiplex within the zoning/built form permitted for single-detached houses.

This scheme proposes a triplex of “through” apartments extending the full building depth on each floor. The apartments are accessed from a shared straight-run interior stair, with an exterior spiral stair at the rear serving as second means of egress as required. A fourth unit is added in the basement with direct access from the side yard access path and a backyard sunken court.

The side yard setbacks shown here are based on the shifting side yard setbacks permitted for a single-detached house in this zone.

Occupancy and Density:
Total Unit Count = 4 Units
Total Occupancy = 8 Beds
Lot Area = 310.2m2
FSI =0.78

Housing Stats:
Third Floor Area = 69.8m2
Second Floor Area = 77.5m2
Ground Floor Area = 93.3m2
Basement Floor Area = 102.7m2 (excluded from FSI)
Garden Suite Area = 39.7m2
Total Floor Area = 383m2












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