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M-3 zoning in BC

M-3 (also written M3) means whatever the bylaw that zones the lot says: there is no provincial M-3 zone. 4 bylaws we've summarised use it, from 4 local governments. It goes by 4 names: Business Industrial, Business Park Industrial, Heavy Industrial, Wrecking Yard. What it allows is below, bylaw by bylaw.

M-3 in each bylaw

Local governmentHomes allowedSmallest lot for a subdivisionLot coverageHeight limit
Township of Langley
Heavy Industrial · Township of Langley Zoning Bylaw 1987 No. 2500
No house: one home or mobile home per lot for the owner, manager or caretaker and their family, accessory to the industrial use (ss. 703.1, 701.1, 701.4; the zone takes M-2's and so M-1A's uses, our reading)3,716 m² (s. 110.1)No limit set in the zoneNo limit set in the zone
City of Maple Ridge
Business Park Industrial · City of Maple Ridge Zoning Bylaw No. 7600-2019
No house: one caretaker home, accessory to the industrial use, inside the same building as the main use with its own entrance at grade, 37 to 90 m² and at most 40% of the building, never strata-titled (ss. 803.3, 803.11(5), 402.7)2,000 m², 30.0 m wide, 50.0 m deep (s. 803.4)60%, all buildings together; outdoor storage at most 25% of the lot; floor space ratio 0.75 (ss. 803.5, 803.6)15.0 m (s. 803.8)
City of Penticton
Wrecking Yard · City of Penticton Zoning Bylaw No. 2024-22
One security or operator home (up to 100 m²), as an M1 use2,000 m², 30 m wideNot set15 m
City of Prince George
Business Industrial · City of Prince George Zoning Bylaw No. 7850, 2007
One residential security/operator unit, inside a main building or in a house or manufactured home (ss. 12.3.3, 12.3.6)600 m², 18.0 m wide (s. 12.3.4)80%; floor area ratio at most 1.6 (s. 12.3.5)12.0 m (s. 12.3.5)

Listed by local government, not ranked. "Not set" means the zone itself sets no figure; general rules elsewhere in its bylaw may still apply. Each zone's page has its uses, setbacks and the bylaw's sections.

Two lots both zoned M-3 under different bylaws can allow quite different things, and provincial law sets a floor of homes on most house zones in towns (how many homes can I build?). Site-specific exceptions, development permit areas and the ALR apply on top. Find the lot's own zone with the search above, then confirm with the local government before you buy or build.

Sources: each zone's bylaw, linked from its page, summarised in our words. Other councils' zones aren't here: the zoning we cover.