BC’s SSMUH Legislation: What Bill 44 Did to Single-Family Zoning

Checked 23 July 2026.

This is the legislation explainer. (For what it means practically for a homeowner — including the traps and the federal routes — see our guide on ADUs in British Columbia.)

British Columbia did something no other Canadian province attempted: it used provincial law to override single-family zoning across the entire province, on a deadline, with compliance enforced.

What SSMUH requires

Per the Province of British Columbia, the requirements fall into two tiers.

Tier one — secondary suites and ADUs, province-wide. Secondary suites and/or accessory dwelling units are allowed province-wide in single-family residential zones, in all municipalities and regional district electoral areas — including where the three-to-six-unit rules don’t apply.

Tier two — three to six units, in qualifying areas. Three to four units of small-scale multi-unit housing must be permitted on each parcel zoned exclusively for single-family or duplex residential, where the parcel is:

• Wholly or partly within an urban containment boundary established by a regional growth strategy, or
• Within a municipality over 5,000 people and wholly or partly within an urban containment boundary established by an official community plan, or
• In a municipality over 5,000 people with no urban containment boundary

Requirements apply to single-family and duplex zones unless the zone already permits three or more units.

The legal machinery: the legislation establishes the framework, the detail sits in regulation — Orders in Council 673-2023 and 675-2023 — and site standards and development expectations are set out in a Provincial policy manual.

The compliance deadline was 30 June 2024, with extensions available in defined circumstances.

The 3–4 vs 6 distinction

Two thresholds do the work, and both are precise.

Parcel size decides three or four:

Frequent transit proximity decides six. Six units must be permitted on parcels over 280 m² in municipalities of 5,000+ people that sit near frequent bus service.

“Frequent” has a definition, and it’s the detail most summaries omit: a bus must stop at least every 15 minutes, on average, between 7 a.m. and 7 p.m., Monday to Friday.

That’s a testable condition. If you’re near a stop, check the timetable against it — the difference between four units and six is substantial, and it turns on a bus schedule rather than anything about your property.

Why the thresholds were set this way: 280 m² is roughly the point below which four units becomes physically difficult on a typical lot, and the transit condition targets density where it’s most supportable. Whether you agree with the lines, they’re objective — which is the point of as-of-right rules.

How municipalities implemented it

Uptake was near-universal, and quickly. Per the Province’s July 2024 announcement, 162 of B.C.’s 188 local governments had passed compliant bylaws as of 23 July 2024, with nine more actively working toward compliance.

Fifteen communities requested formal extensions. Two — the District of Wells and the Northern Rockies Regional Municipality — were granted them owing to wildfire and evacuation impacts. One, the District of West Vancouver, rejected passing the bylaw amendments and was sent a 30-day non-compliance notice, with a ministerial order available at the end of it.

That enforcement mechanism is what distinguishes SSMUH from most Canadian housing policy. The province didn’t ask.

The projected effect: the Ministry of Housing commissioned economic and planning analysis which found that small-scale multi-unit and transit-oriented development together could produce between 216,000 and 293,000 additional net-new homes in B.C. over ten years.

And it’s not finished. The Province passed Bill 25, the Housing and Municipal Affairs Statutes Amendment Act, 2025, to ensure consistent implementation. It:

• Clarifies that a zone containing any parcel restricted to duplexes and/or a single detached home is a Restricted Zone, and must meet the minimum unit density requirements on all lots
• Expands the Restricted Zone definition to include all lots where a single detached home with a secondary suite and detached ADU are allowed

Local governments must update bylaws under Bill 25 by 30 June 2026. So some municipal bylaws are still moving — check yours rather than assuming the 2024 position is final.

Vancouver’s R1-1 as the furthest case

Vancouver went beyond the provincial floor, and its approach is worth understanding as the outer edge of what SSMUH enabled.

The R1-1 zone permits a multiplex option of three to six ownership (strata) units, or up to eight secured rental units, on a single lot — alongside the city’s long-established laneway house programme dating to 2009.

The strata point is the significant one. In most of Canada, additional units on a lot cannot be separately titled at all — and Vancouver’s own policy confirms that secondary suites, laneway houses and lock-off units cannot become separate strata lots. The R1-1 multiplex is a distinct product that can be strata-titled, which makes it the only route in these markets to individually owned units on a former single-family lot.

For a homeowner weighing options, that distinction is strategic: a laneway house produces rental income; an R1-1 multiplex can produce saleable dwellings. They’re designed and approved differently and you can’t convert between them after the fact. Our multiplex development page covers the larger product and our Vancouver building guide covers the comparison.

What SSMUH did not deliver

Three honest limits.

It didn’t deliver money. B.C.’s Secondary Suite Incentive Program — a $40,000 forgivable loan under a three-year pilot announced in 2023 — stopped accepting applications after 30 March 2025. The Province’s announcement cited uncertain financial conditions and the federal government’s commitment to a similar national programme it did not want to duplicate. That federal programme — the $80,000 Canada Secondary Suite Loan Program — was subsequently cancelled and never became operational.

B.C. homeowners were left with neither. The trade was permission for cash, and for owners without equity to finance a build, that trade was less favourable than it looks.

It didn’t change the building code. The BC Building Code applies exactly as before — 2 m minimum ceiling height, egress at 0.35 m² with no dimension under 380 mm and a sill no more than 1 m above the floor, and a 45-minute fire separation reduced to 30 minutes with interconnected photo-electric alarms in each unit.

It didn’t create servicing capacity. Water, sanitary sewer and electrical capacity are physical constraints no legislation overrides. A lot zoned for six units whose services carry two is zoned for six units and can build two. This is the most consequential limit and the least discussed.

Nor did it address municipal fees. Development cost charges still apply unless your municipality exempts secondary suites — many do, but it’s a local bylaw question. And some municipalities charge ongoing: in Surrey, a registered suite attracts secondary suite utility and service fees on annual property taxes. B.C. also charges 7% PST on many construction inputs.

What it means for your property

Four checks:

1. Your parcel size against 280 m² — this decides three or four units.
2. Whether you’re within an urban containment boundary, and your municipality’s population.
3. Your distance to a stop with 15-minute average weekday service, 7 a.m. to 7 p.m. — this is what unlocks six.
4. Your municipality’s current bylaw, which may still be updating under Bill 25 ahead of the 30 June 2026 deadline.

Then the physical questions: lot geometry after setbacks, and servicing capacity.

The honest summary of SSMUH: it removed the permission barrier comprehensively and enforceably, which changed what B.C. lots are worth. It left the cost barrier entirely in place. For an owner with equity, that’s a very good trade. For one without, less so — and that distributional consequence is worth naming rather than glossing over.

Our zoning and bylaws guide covers what to check.

Find out what SSMUH means for your lot

The provincial rules set a floor that turns on parcel size and transit proximity — both checkable. What your lot can physically carry is the separate question.

HouseLyft’s free property assessment answers both for your BC address. Request your free report.