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21355 Thornton Ave

Maple Ridge · PID 003-580-971

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What BC law allows here

Under BC's small-scale multi-unit housing law, the city must allow at least 4 homes on this lot (a multiplex, a house with suites, or a house plus a laneway home).

If this lot were rezoned

Floor spaceHomes
Small-scale housing (Bill 44)
up to 4 homes, BC law, FAR 0.70		4,197 ft²up to 4

Rough planning numbers: homes assume about 85% sellable floor space and 750 ft² apartments (1,100 ft² for houses and townhouses). Transit-area figures are the minimum a city must allow on a rezoning, not an approval. Confirm with the city.

Front of the lot

Google Street View from the street in front of the lot; drag to look around. Photos may be a few years old. Imagery © Google.

Aerial view

Satellite photo, the pin marks the lot. Imagery © Google.

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Lot facts

Address
21355 Thornton Ave
City
Maple Ridge
PID
003-580-971
Lot size
557 m² · 5,995 ft²
Zone
RS-1b Houses, duplexes & small multiplexes RS-1b rules
Homes guide
How many homes can I build in Maple Ridge?
Property tax
$4.54 per $1,000 of assessed value

Zoning rules · RS-1b · Single Detached (Medium Density) Residential

Medium-density single detached residential use with a minimum lot area of 557 m2 (s.607.1).

Floor area
No floor-area ratio: size is set by height, setbacks and coverage
Max height
31 ft (9.5 m)
Max building footprint
3,597 ft² (334 m²)
Setbacks
front 5.5 m, side 1.5 m, rear 6.0 m, flanking side 3.0 m
Homes
Inside the Urban Containment Boundary (Urban Infill Residential, s.402.29): up to 3 homes on lots <= 280 m2; up to 4 on lots > 280 m2 and <= 0.4 ha; up to 6 on lots within 400 m of a Prescribed Bus Stop; lots > 0.4 ha limited to 3 (house + secondary suite + detached garden suite). Not permitted in Transit-Oriented Areas (Schedule H, s.402.29.7(e)). Forms: single detached, duplex, triplex, fourplex, courtyard and townhouse (by lot area), plus secondary suite and detached garden suite.

Maple Ridge Zoning Bylaw No. 7600-2019 (consolidated to 2026-07-28) · s.607.1-607.11, 402.11, 402.24, 402.29, 402.31, 403.4. Estimated from the bylaw for a lot of this size; confirm with the city before buying or building.

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