Laneway house, coach house, garden suite: the words matter
The terms get used interchangeably and they should not be, because they describe different buildings that price differently and land in different places in the zoning bylaw. If you are pricing one and being quoted the other, the number will be wrong.
A laneway house is a detached dwelling at ground level, typically in the rear yard and accessed from the lane where one exists. A coach house is a dwelling built above a garage or parking structure, which means the lower level is engineered to carry the upper one: long clear spans for vehicle doors with a home sitting on top need real beams and concentrated bearing points with footings to match. That structure is why a coach house runs $400 to $600 per square foot against $375 to $550 for a laneway house at grade, and why the two should never be estimated from each other.
Both are forms of what BC calls a detached accessory dwelling unit: a self-contained residence, with its own kitchen, bathroom, sleeping area, and separate entrance, secondary to the principal home on the lot. The separate entrance and full kitchen are what distinguish a dwelling unit from a bedroom with a bar fridge, and they are what the building code, the servicing requirements, and the rent all follow from.
One more piece of vocabulary, because it matters on permits: West Vancouver does not use the word laneway at all. Its program is called detached secondary suites, informally rental coach houses, and the District of North Vancouver has used both coach house and detached secondary dwelling over the years. When you phone a planning department, use their word.
Where they are allowed: three municipalities, three rulebooks
The North Shore is three separate municipalities, and a lot that easily takes a coach house in one can face tighter limits two streets away across a boundary. The table below is the 2026 picture in outline. Every figure should be confirmed with the municipality for your specific lot before you commission drawings, because these bylaws have been amended repeatedly since 2024 and more change is likely.
The City of North Vancouver has run a coach house program for years and is the most developed of the three. Coach houses are permitted on one-unit residential lots of at least 362.3 square metres, about 3,900 square feet, with unused floor area available under the zone's cap, and the City publishes pre-approved coach house plans that can shorten the review on straightforward lots. In December 2025 the City went further, adopting a new ground-oriented zone that allows three to six units per lot depending on lot size and location.
The District of North Vancouver permits coach houses on eligible single-family lots inside its urban containment boundary. The long-standing size cap was 90 square metres, about 968 square feet, with two storeys possible where height and roof rules allow, and a lane is preferred but not required: where no lane exists, access comes from the fronting street. Parking is the District's distinctive requirement: three on-site spaces across the property, one of which may be inside the coach house. In December 2025 the District adopted ground-oriented housing regulations that permit up to four units on eligible lots and expand the maximum coach house size to about 130 square metres, roughly 1,400 square feet; confirm the exact figure for your zone with the District, because these provisions are new.
West Vancouver permits detached secondary suites in most single-family zones, RS6 being the exception, and in the RD1 and RD2 duplex zones. The floor area cap is the greater of 111.5 square metres or 10 percent of the site area, to an absolute maximum of 148.6 square metres of gross floor area counting basements and vehicle storage. The building must sit at least 4.9 metres from the principal dwelling and include at least 6 square metres of private outdoor space, and most two-storey configurations need a form and character development permit before the building permit. West Vancouver reviews are the longest of the three, and nothing about a West Vancouver project should be estimated from a Vancouver or North Vancouver benchmark.
| Rule | City of North Vancouver | District of North Vancouver | West Vancouver |
|---|---|---|---|
| Program name | Accessory coach house | Coach house / detached secondary dwelling | Detached secondary suite (rental coach house) |
| Where permitted | One-unit residential lots of 362.3 m2 (about 3,900 sq ft) or larger | Eligible single-family lots inside the urban containment boundary | Most single-family zones except RS6, plus RD1 and RD2 |
| Size cap | Tied to the lot's unused floor area under the zone | 90 m2 historically; about 130 m2 under the December 2025 changes | Greater of 111.5 m2 or 10% of site area, to 148.6 m2 total |
| Parking | Reduced near transit; commonly one stall | Three on-site spaces across the property, one may be in the coach house | Vehicle storage capped at 20.4 m2 within the suite building |
| Distinctive requirement | Pre-approved plans available; design compatibility with the main house | Slope, creek setbacks, and tree protection drive feasibility | 4.9 m separation from the main house, 6 m2 private outdoor space |
A snapshot, not the bylaw. All three municipalities amended these rules between 2024 and 2026 and further changes are expected. Confirm current requirements for your specific lot before designing anything.
Bill 44, Bill 25, and the 2026 standoff
The reason all three municipalities now clearly permit detached units traces to provincial legislation. Bill 44, BC's small-scale multi-unit housing law passed in late 2023, required municipalities to allow at least a secondary suite or accessory dwelling unit on single-family lots, with three or four units on most urban lots and up to six near frequent transit. On the North Shore, the practical effect was that adding a suite plus a detached unit went from a rezoning conversation to something clearly permitted.
Then the province tightened the screws. Bill 25, the Housing and Municipal Affairs Statutes Amendment Act passed in November 2025, closed the interpretation some municipalities had leaned on, that a main house plus a suite plus a coach house already satisfied the density rules, and set a June 30, 2026 deadline for compliant zoning that permits the full range of small-scale housing types, including houseplexes.
The three councils went three different ways. The City of North Vancouver adopted its new official community plan and ground-oriented zoning on December 8, 2025, allowing three to six units per lot depending on size and location. The District of North Vancouver adopted its own ground-oriented housing rules in December 2025, up to four units on eligible lots, but on April 13, 2026 council voted 4 to 3 against the further changes Bill 25 requires, making it the first Metro Vancouver municipality to formally decline the provincial mandate. West Vancouver council had refused to consider its own Bill 25 zoning changes on April 4, 2026, and the June 30 deadline passed with neither district compliant.
What this means for a homeowner in August 2026: the rules on the books today still permit your coach house or laneway house in all three municipalities, and nothing about the standoff changes that. But how the province responds to the two non-compliant districts is an open question, and the rules could move again with little notice. It is one more reason to confirm your lot's current entitlements with the planning department at the start of the project rather than relying on anything published earlier, this page included.
What it actually costs in 2026
The construction number is the one people quote. It is not the number they end up paying. Construction on the North Shore runs $350 to $450 per square foot for a basic finish on a simple foundation, $400 to $550 for a mid-range unit on a standard site, and $500 to $700 where the finish is high-end or the site is difficult, with coach houses at the upper end of each band because of the engineered structure under the dwelling.
On top of construction sits everything else, and on the North Shore the everything else is substantial. Here is the whole picture for a typical 700 square foot mid-range unit.
| Line item | Range |
|---|---|
| Construction at $400 to $550 per sq ft | $280,000 to $385,000 |
| Architectural design and drawings | $18,000 to $40,000 |
| Structural engineering | $6,000 to $14,000 |
| Geotechnical report | $2,500 to $6,000 |
| Arborist report and tree protection | $2,000 to $8,000 |
| Survey | $2,500 to $5,000 |
| Building permit and municipal fees | $12,000 to $30,000 |
| Servicing: water, sanitary, hydro | $30,000 to $90,000 |
| Site work, excavation, landscaping restoration | $25,000 to $70,000 |
| Electrical service upgrade if still on 100 amp | $4,500 to $9,000 |
Added together, a completed North Shore laneway house lands between $420,000 and $600,000, and a coach house between $420,000 and $650,000. On a difficult lot with street servicing and heavy site work, $650,000 is realistic for either.
Why a small building costs more per foot than a big one
A 700 square foot laneway house needs the same permit process, utility connections, foundation engineering, and mechanical systems as a full-size house, compressed into a smaller package. The kitchen and bathroom, the two most expensive rooms per square foot in any building, take up a far larger share of the floor area, and mobilization overhead is roughly the same whether the building is 700 or 2,500 square feet.
Design constraints: height, setbacks, parking, trees, and fire access
Height is the binding constraint on almost every coach house. Municipalities cap the overall height of accessory buildings, and a coach house stacks a garage level, a floor assembly, and a dwelling under that cap. Getting a comfortable ceiling upstairs while keeping the garage tall enough for a vehicle means every inch of the floor assembly matters, which is where engineered floor systems earn their cost. A laneway house at grade dodges the problem, which is one reason to build one where parking rules allow it.
Setbacks and separation define the buildable envelope before design starts. Side and rear setbacks come from the zone, West Vancouver adds its 4.9 metre separation from the principal dwelling, and on many lots the leftover envelope is smaller than owners expect. Overlook into neighbouring yards draws scrutiny everywhere, and a low, simple massing is a strategic choice as much as an aesthetic one on any lot where a neighbour is likely to comment during notification.
Trees stop more North Shore projects than any bylaw. Both North Vancouver municipalities and West Vancouver protect mature trees, in the City anything above roughly 20 centimetres in diameter, and a protected tree's root zone extends well past the canopy. Two mature cedars in a rear corner can consume the entire buildable area. Protection measures during construction run $3,000 to $10,000, and we have had Lynn Valley projects where the root zone pushed the building 10 feet, which cascaded into servicing runs, setbacks, and the floor plan. An arborist report before design is the best few thousand dollars on any detached-unit project.
Fire access is the quiet one. A dwelling at the back of a deep lot has to be reachable in an emergency, and the fire department reviews access as part of permitting. On long or constrained lots, the path from the street to the unit's entrance can shape where the building sits and what mitigation the design carries, so raise it at the pre-application meeting rather than discovering it in plan check. New units must also meet the BC Energy Step Code, which on a 700 square foot building adds roughly $15 to $25 per square foot for the better envelope, high-performance glazing, heat recovery ventilation, and the blower door test that proves the air sealing.
- Height: accessory building caps bind hardest on coach houses, where garage, floor assembly, and dwelling stack under one limit
- Setbacks: zone setbacks plus, in West Vancouver, 4.9 m separation from the main house
- Parking: one stall commonly in the City near transit, three spaces across the property in the District, vehicle storage capped at 20.4 m2 in West Vancouver
- Trees: protected root zones can consume the buildable area; arborist first, design second
- Fire access: the route from street to entrance is reviewed, and deep lots need it planned early
- Step Code: better envelope, triple-pane or high-performance glazing, HRV, and airtightness testing on every new unit
Servicing: the line item that ruins budgets
The building is the part people picture. The connection to municipal services is the part that surprises them, and it is the single widest variable in the whole budget.
A detached unit needs its own water supply, sanitary connection, and electrical feed. If the lane behind the property already carries services and the run is short and unobstructed, the whole package might cost $30,000. If the sanitary main is in the street rather than the lane, common on the North Shore, the connection has to run under or around the existing house, which means trenching the front yard, cutting the street, restoring pavement to municipal standard, and paying for traffic management. That is how the same line item reaches $90,000 on the lot next door.
Electrical has its own trap. Adding a second dwelling to a property still on 100 amp service means a service upgrade at $4,500 to $9,000, and BC Hydro's timeline is not yours: 6 to 12 weeks is normal, and on some older streets the transformer serving the block needs attention, which adds months. Water and sewer laterals, meter splits, and, in older neighbourhoods, storm and sanitary separation requirements all live in this category too.
The advice is simple and it saves real money: spend a few thousand dollars on a servicing investigation, a locate plus a review of the municipal utility records, before commissioning architectural drawings. Once in a while it reveals the project does not work at the owner's budget. Far better to learn that before paying for a design.
The process, start to occupancy
From first conversation to a tenant or family member moving in, a detached unit on the North Shore runs 14 to 22 months. The permit stage carries the widest variance: a straightforward application on a flat lot with lane services and no protected trees can clear in about four months, while a sloped Lynn Valley lot with a creek setback, an arborist report, and geotechnical review can sit for eight or more. That is not the municipality being difficult. It is a genuinely more complicated file.
One legal requirement to know before hiring anyone: a new laneway or coach house is a new home under BC law, which means the builder must be licensed with BC Housing and the unit must carry third-party 2-5-10 home warranty insurance, two years on labour and materials, five on the building envelope, ten on structure. That is a meaningful difference from renovation work, and BC Housing's licensed builder search is public, so check it.
- 1
Site investigation before anything else
Arborist report, servicing locate, survey, and a zoning summary for the specific lot. The package costs $8,000 to $16,000 and answers whether the project exists before anyone designs it.
- 2
Pre-application meeting with the municipality
All three North Shore municipalities offer them, generally free. Thirty minutes with a planner flags tree, drainage, parking, and fire access issues before you have paid for drawings.
- 3
Design and consultant reports: 3 to 5 months
Architecture, structural, geotechnical, and energy modelling, run in parallel where possible. In the City of North Vancouver, a pre-approved coach house plan can shorten this on a straightforward lot.
- 4
Permits: 4 to 8 months
Often a development permit ahead of the building permit for detached units. Complete applications move fastest; missing arborist or geotechnical reports are the most common cause of resets.
- 5
Construction: 5 to 11 months
Laneway houses at the shorter end, coach houses longer because of the engineered structure. North Shore rain slows sitework from November through March, so foundation timing matters.
- 6
Final inspections and occupancy
Inspection sign-offs, warranty registration on the new unit, and the occupancy permit that makes the rent legal and the insurance valid.
Rental income, family use, and whether the math works
A one-bedroom laneway house in North Vancouver rents for roughly $1,800 to $2,500 a month in 2026, a two-bedroom for $2,200 to $3,000, and a well-finished coach house toward $2,400 to $3,200. On a $350,000 construction cost, $2,200 a month is a gross yield of about 7.5 percent, but after the property tax increase, insurance, maintenance, and vacancy, the net return runs closer to 4 to 5 percent, and on the full all-in cost the payback on rent alone stretches to fifteen or twenty years. The stronger financial argument is the property itself: a permitted, finished unit can add $200,000 to $400,000 of value, and the documented rental income changes what a future buyer can borrow.
Count the carrying costs honestly. BC Assessment treats the new unit as an improvement, and on a typical North Vancouver property the assessed value rises $150,000 to $350,000, which is roughly $500 to $1,500 a year in additional property tax. Landlord insurance on a detached unit runs $800 to $1,500 a year, and your existing home policy does not automatically cover the new building.
The homeowners happiest with these projects almost always had a person in mind from the beginning. An adult child priced out of the market, parents who want proximity without cohabitation, or a plan to downsize into the smaller unit at retirement and rent out the main house: these are the cases where a detached unit beats every alternative, because it buys exactly the right amount of separation. Design follows the occupant. A rental unit wants durable finishes, in-unit laundry, and sound separation. A parent suite wants wider doorways, a curbless shower, and level access, which cost little to build in and a lot to retrofit.
And before committing to a detached build, price the basement. A legal basement suite at $70,000 to $150,000 rents for $1,900 to $2,600 and takes 4 to 7 months rather than 14 to 22. It earns less and offers less privacy, but on cost per unit nothing competes with a structure that already exists. The right answer depends on the lot, the house, and the person the unit is for.
The comparison worth running first
Basement suite: $70,000 to $150,000, 4 to 7 months, rents $1,900 to $2,600. Detached laneway or coach house: $420,000 to $650,000 all in, 14 to 22 months, rents $1,800 to $3,200 with far more privacy and a larger lift to property value. Run both through the calculators before choosing.
How we scope these projects
We start with the site, not the building. Lane access, servicing locations, tree survey, slope, and setbacks get established before anyone draws a floor plan, because those five things determine what is buildable and every one of them can end a project. Not every North Shore property is a good candidate for a detached unit, and we would rather say so at the first site visit than let an owner spend months in design before hitting the wall at permit stage.
We price servicing and site work as a separate, explicit part of the budget rather than folding them into a per-square-foot number. A coach house quoted at $450 per square foot with the servicing hidden inside it is a number that will move. Splitting it out means you see the real shape of the project from the beginning, and it is how our fixed-price contract stays fixed.
From there we run the whole sequence: the pre-application meeting with the City, District, or West Vancouver on your behalf, design coordination with our architectural partners, the engineering, the permit submission and plan-check responses, and construction with one team accountable for the result. Small buildings are not simple buildings. The margin for error on 700 square feet is tighter than on a full house, and the trade sequencing in a small space is where these projects are won or lost.
Every question, answered
These are the questions we actually get asked, with the answers we actually give.
How much does it cost to build a laneway house in North Vancouver in 2026?
Construction runs $350 to $700 per square foot depending on finish level and site conditions, and the all-in number, once design, engineering, permits, servicing, and site work are added, lands between $420,000 and $600,000 for a typical 700 square foot unit. A coach house over a garage reaches $650,000 because of the engineered structure. On a difficult lot with street servicing, $650,000 is realistic for either.
What is the difference between a laneway house and a coach house?
A laneway house is a detached dwelling at ground level; a coach house has its living space built above a garage or parking structure. The stacked structure means the garage level is engineered to carry a dwelling, which is why coach houses run $400 to $600 per square foot against $375 to $550 for a laneway house at grade. Parking rules often decide between them: where a stall is required, the coach house solves it on the same footprint.
Can I build a coach house on my North Shore lot?
Probably, but the rulebook depends on your municipality. The City of North Vancouver permits coach houses on one-unit residential lots of at least 362.3 square metres, about 3,900 square feet, with pre-approved plans available. The District allows them on eligible lots inside its urban containment boundary, with three on-site parking spaces required across the property. West Vancouver permits detached secondary suites in most single-family zones except RS6. In practice, protected trees, slope, and servicing stop more projects than zoning does.
How big can a coach house be in each North Shore municipality?
In the District of North Vancouver the long-standing cap was 90 square metres, about 968 square feet, expanded to about 130 square metres, roughly 1,400 square feet, under the ground-oriented housing changes adopted in December 2025. West Vancouver allows the greater of 111.5 square metres or 10 percent of site area, to an absolute maximum of 148.6 square metres including basements and vehicle storage. In the City of North Vancouver the size is tied to the lot's unused floor area under the zone. Confirm current figures with your municipality, since all three amended these bylaws between 2024 and 2026.
What did Bill 44 and Bill 25 change for North Shore homeowners?
Bill 44, passed in late 2023, required municipalities to permit secondary suites and accessory dwelling units on single-family lots, which made a suite plus a detached unit clearly permitted on most North Shore properties. Bill 25, passed in November 2025, tightened the requirements and set a June 30, 2026 zoning deadline. The City of North Vancouver complied on December 8, 2025 with a zone allowing three to six units per lot, while the District of North Vancouver voted 4 to 3 on April 13, 2026 against implementing the mandate and West Vancouver declined on April 4, 2026, so the provincial response is still unfolding.
How long does a laneway or coach house take from start to occupancy?
Plan on 14 to 22 months on the North Shore: 3 to 5 months of design and consultant reports, 4 to 8 months of permit review, and 5 to 11 months of construction. A flat lot with lane services and no protected trees sits at the short end; a sloped Lynn Valley lot with a creek setback and geotechnical review sits at the long end, and North Shore rain slows sitework from November through March.
Why can servicing a laneway house cost $90,000?
Because the cost depends on where the sanitary main sits. If the lane already carries services and the run is short, the water, sewer, and hydro package might cost $30,000. If the sanitary main is in the street, the connection runs under or around the existing house, which means trenching the front yard, cutting the street, restoring pavement to municipal standard, and traffic management. A servicing investigation before design costs a few thousand dollars and occasionally saves the whole project.
How much rent does a laneway or coach house earn on the North Shore?
In 2026, a one-bedroom laneway house rents for roughly $1,800 to $2,500 a month, a two-bedroom for $2,200 to $3,000, and a well-finished coach house toward $2,400 to $3,200. Net of the property tax increase, insurance, maintenance, and vacancy, the return runs about 4 to 5 percent, with payback on rent alone at fifteen to twenty years. The larger financial effect is usually the $200,000 to $400,000 the finished unit adds to property value.
Does a laneway house need a BC Housing licensed builder and 2-5-10 warranty?
Yes. A new laneway or coach house is a new home under BC law, so the builder must hold a BC Housing residential builder licence and the unit must carry third-party 2-5-10 home warranty insurance: two years on labour and materials, five on the building envelope, ten on structure. That is different from renovation work inside an existing house, which sits outside the mandatory warranty scheme. BC Housing's licensed builder search is public, so verify before signing.
Is a basement suite or a laneway house the better first move?
On cost per unit, the basement suite wins: $70,000 to $150,000, built in 4 to 7 months, renting $1,900 to $2,600, against $420,000 to $650,000 and 14 to 22 months for a detached unit. The laneway or coach house wins on privacy, rent ceiling, and property value, and it is usually the right call when the unit is for family, an adult child or aging parents, where the extra separation is the point.
