New Westminster and Coquitlam: SSMUH across the eastern suburbs

Stand on a New Westminster street and you can usually see the Fraser River below you, because the city tilts toward it. Drive twenty minutes east to Coquitlam and the land flattens out into wide postwar lots, many of them a short walk from a SkyTrain station. Two cities, two landscapes, and, since the province changed the rules, the same basic permission to build small multi-unit housing on lots that used to allow a single house.

British Columbia's Small-Scale Multi-Unit Housing law did not stop at Vancouver. It reached every municipality, and New Westminster and Coquitlam both adopted it, on different timelines and in different forms. For a homeowner east of the city, that means the opportunity is genuinely there. How it plays out, though, depends heavily on which of these two cities you are in, what your lot looks like, and a few pieces of fine print that most owners never hear about.

The same floor, set by the province

Both cities work from the same provincial minimums. A lot of 280 square metres or smaller must allow at least three homes. A larger lot must allow at least four. And a larger lot within roughly 400 metres of frequent transit must allow at least six. These are the floors every Metro Vancouver and the Fraser Valley municipality had to meet, including these two.

Past that shared floor, each city wrote its own bylaw, its own setbacks, height limits, parking expectations and design guidelines, and in New Westminster's case its own zone names. So a fourplex in Coquitlam and a fourplex in New Westminster start from the same unit math but end up shaped by different local rules. The headline number travels across city lines; the design details, and sometimes even that sixth unit, do not.

Coquitlam: flat land, and a transit catch almost nobody expects

Coquitlam adopted its SSMUH zoning changes in June 2025, and its older neighbourhoods gave us a lot of flat, regular lots, which is close to ideal for multiplex design. On flat land, units arrange cleanly, parking is straightforward, and each home can get its own entrance and a piece of usable outdoor space without the building fighting the grade. On paper, Coquitlam looks like the easy city to build in.

Here is the catch, and it's the one owners get wrong most often. The six-unit bonus is not triggered by being near a SkyTrain station, it's triggered by frequent bus service, a stop running about every 15 minutes through the day. And Coquitlam has stated that it currently has no bus stops meeting the provincial criteria for frequent service. So even along the Evergreen extension, most Coquitlam lots top out at four units today, not six. We've had to correct that assumption more than once, because the SkyTrain line is right there and it feels like it should count. Under the way the rule is written, right now, it doesn't.

That can shift if service levels change, which is exactly why we check the current transit designation for a specific address instead of eyeballing the map. But planning a six-unit Coquitlam project on the assumption that a nearby station qualifies you is a good way to design a building the bylaw won't permit. Four is the number to build around on most Coquitlam lots as things stand.

New Westminster: RGO-A, RGO-B, and density on a hillside

New Westminster took a different route and a later one. It adopted its Infill Housing Program in June 2026 and pre-zoned properties into two categories: RGO-A, which permits up to four units, and RGO-B, which permits up to six. So in New Westminster the question isn't only how big your lot is, it's which category the city assigned your property. That designation sets your ceiling before design even starts, and it's the first thing we look up on a New Westminster address.

New Westminster is also one of the oldest cities in the region, and it shows in the street grid: compact lots, walkable blocks, real neighbourhood character, and slope. A lot of the city runs downhill toward the river, and that slope is the defining design factor for a multiplex here.

Building on a grade is not a problem to avoid; it is a condition to design with. Units can step down the slope, parking can tuck into the lower portion of the site, and a well-handled hillside building often feels more interesting than a flat-lot equivalent. But it takes deliberate engineering. Foundations cost more, access has to be worked out carefully, and a design lifted straight from a flat Coquitlam lot will not drop onto a New Westminster hillside unchanged.

One more piece of New Westminster fine print: Queensborough was left out of the June 2026 program. The city said it needs to study whether the water and sewer there can carry more housing, and it holds a provincial extension with a compliance deadline of May 4, 2029. If your lot is in Queensborough, you're on a different clock than the rest of the city, and that belongs in the conversation early.

• Coquitlam, flatter lots and simpler layouts, but currently no qualifying frequent-transit stops, so most lots cap at four units.
• New Westminster, RGO-A (up to four units) or RGO-B (up to six), assigned lot by lot, on compact, character, often-sloped land.
• Both, three to four homes on most lots as a baseline, set by the province off the 280-square-metre line.
• Both, local setbacks, height and design rules layered on top of the shared minimums.

Why "frequent transit" decides so much

The phrase "frequent transit" is not casual language, and Coquitlam's situation shows why it matters. It points to a specific service standard, corridors where buses run often enough, all day, to count under the housing rules, anchored in TransLink's Frequent Transit Network. When a lot falls within roughly 400 metres of a stop that meets that standard, the higher unit minimum can apply. When no stop meets it, as Coquitlam currently reports, the bonus simply isn't available, SkyTrain or not.

This is why Coquitlam and New Westminster behave differently lot by lot, and why neither behaves like Vancouver. Transit coverage, service frequency and how each city drew its designations all vary. Two neighbours on the same street can end up with different permitted unit counts. We measure it precisely against the current designations rather than assuming distance to the nearest station settles it, because the difference is worth real money.

Parking, and where the two cities quietly differ

Parking is one place the provincial push toward gentler requirements shows up unevenly. New Westminster, for instance, removes off-street parking minimums for its six-unit RGO-B category, the lots pre-zoned for the higher count near frequent transit. That doesn't mean parking disappears from the design; it means the number of stalls becomes a design and market decision rather than a fixed bylaw minimum. On a tight, sloped New Westminster lot, that flexibility can be the difference between a workable layout and a cramped one.

Coquitlam's flatter lots make parking mechanically easier to place, but with most Coquitlam sites capped at four units, the calculus is different, fewer homes, simpler access, and no six-unit parking relief to lean on. We work the parking layout alongside the unit count in both cities, because a plan that ignores where the cars go tends to lose a unit late in design, which is the worst time to lose one.

The building itself is provincial, the ground isn't

Owners comparing these two cities sometimes assume the buildings will differ as much as the sites do. Mostly they won't. Both cities build to the BC Energy Step Code, the provincial standard that ratchets up energy performance over time, better-sealed walls, good windows, and mechanical systems chosen with the energy target in mind. That standard is set provincially, so a New Westminster multiplex and a Coquitlam multiplex share the same wall physics. What differs is the ground: Coquitlam's flat, easy lots versus New Westminster's grades. Design to the site, budget to the code.

Reading your specific lot

If you own a lot in either city, the useful question is not "what does the law allow" in general, it is "what does my lot allow," once slope, the current transit designation, lot area and the local bylaw (including New Westminster's RGO category) are all accounted for. Those factors can swing a project meaningfully in both directions.

We have learned not to trust citywide averages on these eastern lots. New Westminster's hills and RGO split, and Coquitlam's transit fine print, create too much variation between neighbouring properties. The only reliable read comes from putting your actual parcel against the actual rules as they stand this year.

Where to start

The practical next step is a Feasibility & Equity Review on your specific address. We confirm the local bylaw for New Westminster or Coquitlam, look up your RGO category or Coquitlam zone, check the current frequent-transit designation rather than assuming a nearby station qualifies, factor in slope and lot area, and give you an honest unit count along with the equity already sitting in your land. If that points to a project worth pursuing, our Development Strategy & Permitting work takes the design through the city's process. You can also try the multiplex calculator for a first estimate before we meet. Both cities opened the door; a clear read on your own lot, and on the fine print, tells you how far through it you can walk.

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