How Many Homes Can You Build on One Lot in BC? (Bill 44)
Short answer: on most single-family or duplex lots in a BC municipality of 5,000 people or more, the province now requires the city to permit at least three homes on a lot up to 280 m² (3,014 sqft), four on anything larger, and six on a larger lot within 400 m of a frequent-transit stop. No rezoning. The exemptions catch acreages over 4,050 m², ALR land, lots without municipal water and sewer, and heritage sites. Everything below is the detail behind that answer, and how to check your own parcel.
On December 7, 2023, British Columbia passed Bill 44, the Housing Statutes (Residential Development) Amendment Act. Most cities had until June 30, 2024 to bring their bylaws into line. The framework is called Small-Scale Multi-Unit Housing (SSMUH). It is the most significant change to BC's residential zoning regime in decades, and one of the largest sources of acquisition opportunity in the province. But the actual unit math is more nuanced than the press release made it sound.
The core rule: 3 or 4 units, anywhere a single-family home is allowed
On any parcel zoned for a single-detached home or duplex, in any BC municipality with a population of 5,000 or more, the local government must permit a minimum number of dwelling units, and the number depends on lot size. A lot of 3,014 sqft (280 m²) or less gets a floor of three units. A lot larger than 3,014 sqft gets a floor of four. There is no two-unit tier: the floor does not start at 3,014 sqft, it steps up there.
The transit bump: 6 units within 400 m of frequent transit
If the parcel is within 400 m of a designated frequent-transit stop, defined as a stop served on average every 15 minutes, 7am to 7pm on weekdays and 10am to 6pm on weekends, and the lot is over 280 m², the floor jumps to six. There is no additional lot-size threshold for the 6-unit tier; being over 280 m² and near a prescribed stop is the whole test.
This is the part where municipalities are still scrambling. Some cities publish a Frequent Transit Network layer (Burnaby's, for example, is wired into our tool); others are still working from TransLink's regional FTN polygon. The legal threshold is the same; the GIS layer used to check it varies.
What the unit floor does not do
- It doesn't override coverage, height, or setback rules. Municipalities can still regulate built form. Your 6-unit yield is subject to the city's design guidelines, parking minimums (where they still exist), and DCCs.
- It doesn't apply to a parcel larger than 4,050 m² (about 43,600 sqft, just over an acre). This one surprises people, because it runs opposite to intuition: the biggest lots are exempt, not entitled to the most units. A zone whose minimum subdivision lot size is 4,050 m² or more is exempt for the same reason.
- It doesn't apply to heritage-protected land, or to land that isn't connected to both municipal water and sewer. Servicing is the exemption that catches rural-edge parcels inside an otherwise qualifying municipality.
- It doesn't kick in for lots in the ALR. SSMUH applies to urban-zoned land. Agricultural Land Reserve parcels stay under ALC jurisdiction.
- It doesn't require the city to approve secondary suites or carriage houses on top of the unit count, though many cities have added them as bonus density. Read your local SSMUH bylaw closely.
- It doesn't apply on parcels where the FSR is the binding constraint. If your lot already permits an FSR that yields fewer GFA than the unit floor implies, the unit floor still wins: you get the units, not the FSR ceiling. But you can't stack both.
How to check your specific parcel
The math depends on three variables: lot area, current zoning use class, and frequent-transit proximity. The first two are always known; the third can be a coin-flip depending on whose layer you trust.
BC Property Check pulls the lot area from the LTSA ParcelMap BC layer, the zoning use class from the city's bylaw schedule (we've wired 47 BC municipalities and regional districts), and applies the SSMUH ladder. The result appears in the report's "Density potential" rung. If your parcel is in a wired city, you'll see the unit floor labelled Bill 44 SSMUH with the lot-area threshold that triggered the tier.
Check how many homes your lot allows
Common questions
How many houses can you build on one property in BC? On a single-family or duplex lot in a municipality of 5,000 or more, the provincial floor is 3 homes (lot up to 280 m²), 4 homes (larger lot) or 6 homes (larger lot within 400 m of frequent transit). The zone may allow more; it cannot allow fewer. Outside those conditions, the zoning bylaw alone sets the count.
Can I build a second house on my land in BC? On most urban lots, yes, and usually a third and fourth too. The units can be detached, attached or stacked; the province sets a count, not a form. Whether a second detached house fits is a coverage, setback and lot-width question, which is why the same lot can support four stacked units but only two detached ones.
How many houses can you build on an acre in BC? An acre is 4,047 m², just under the 4,050 m² SSMUH cap, so a one-acre urban lot with water and sewer still gets the 4-unit floor (6 near frequent transit). Above 4,050 m² the floor no longer applies and the zone governs: an RS-type zone allows what it always did, and a multi-family zone allows whatever its FSR and height produce. Rural acreages outside a municipality, or on septic, are outside SSMUH entirely.
Does the unit count include a secondary suite or laneway house? It depends on the city. The province counts dwelling units, and a suite is a dwelling unit, so many bylaws count it toward the 3, 4 or 6. Some cities allow a suite or laneway on top. Check the local SSMUH bylaw, or the report's density section, which reads the schedule for wired cities.
Why this matters for acquisition
Pre-SSMUH, a single-family lot in a BC suburb was a 1-unit asset with a rezoning option attached, and rezonings take 18-30 months and 6-figure consultant budgets, with no guaranteed approval. SSMUH took most of that risk off the table for the first 3-6 units. The development math is now:
- Land per unit goes from 1 to ~3-6. A 6,500 sqft lot at $1.6M, divided over 3-4 units, is ~$400-530K per door of land cost. That's the same range townhouses on a rezoned lot trade at, but without the rezoning timeline.
- Construction is woodframe and stick-built. No hi-rise concrete premium. Hard cost is in the ~$260-330/sqft range.
- Sale prices follow the townhouse comp set if you design the units like townhouses. Fee simple subdivisions are easier under SSMUH than they were under stratification.
The opportunity isn't unique to Vancouver. It's anywhere zoning was previously locking out density and the new rule reset the floor. That's roughly every lot in every Metro Van suburb plus most of the larger Island and Interior cities.
What's next
Bill 47, the Transit-Oriented Areas sister law, adds a second ladder on top: minimum FSR 5.0 within 200 m of rapid transit, FSR 4.0 within 400 m, FSR 3.0 within 800 m. Cities are still publishing their TOA layers; ours has the Coquitlam and Burnaby tiers wired and will add more as they're released.
SSMUH and TOA do not stack, which is a common misunderstanding. Land inside a designated Transit-Oriented Area is one of the listed SSMUH exemptions: Bill 47 governs there instead, and the FSR minimum replaces the unit floor rather than adding to it. If your parcel is in a TOA tier, read the TOA numbers, not the SSMUH ones.
For Vancouver-specific implementation, how many multiplex units you can build on your Vancouver lot covers the all-rental pathway to 6 units, the conditional pathway to 8, and the actual cost numbers. For Surrey and Burnaby see the Surrey and Burnaby guides.