Homeowner's Guide · North Vancouver
Home Additions in North Vancouver: Cost Factors, Permits & Process
Adding square footage is one of the smartest ways to get the home you want without moving — but it's also where projects go sideways when the structure underneath isn't right. Here's how additions actually work on the North Shore, and what to think about before you start.
Build up, build out, or finish what you have?
There are three common ways to add living space, and the right one depends on your lot, your home, and your budget:
- Build out — a ground-floor addition that extends the footprint. Needs new foundation and roof, but is the simplest structurally. Limited by your lot's setbacks and how much yard you're willing to give up.
- Build up — a second-storey addition. Keeps your footprint but adds load to the existing foundation and walls, so those have to be checked (and sometimes reinforced) first.
- Build under — finishing or lowering a basement to add a suite or living space. Often the best value per square foot, and on the North Shore a legal secondary suite can offset your mortgage.
What actually drives the cost
There's no honest per-square-foot number that fits every addition — anyone who gives you one over the phone is guessing. The real cost is driven by:
- Foundation and structure — whether the existing foundation can carry the new load, and whether you're pouring new footings.
- Connecting old to new — matching rooflines, framing, and finishes so the addition looks original, not bolted-on.
- Mechanical reach — extending heating, plumbing, and electrical, and whether your existing systems have the capacity.
- Site access and slope — North Shore lots are often tight and steep, which affects everything from excavation to material handling.
- Finishes — the same shell can cost very differently depending on the kitchen, bathrooms, and millwork inside it.
Permits and zoning come first
Nearly every addition needs a building permit from the District or City of North Vancouver, and the design has to fit your property's zoning — setbacks, height limits, and floor-area ratio. This stage usually takes longer than the construction itself, so it pays to start early and get the drawings right the first time. We handle the permit, the drawings, and the engineering so you don't have to chase city hall.
The part most homeowners miss: the structure underneath
An addition only lasts if what's holding it up is sound. We've been called in more than once to fix an addition that was framed onto a foundation that couldn't take it — cracking, sloping, separating from the original house within a few years. Because structural work is our specialty, we check the bones first and build the addition to last, not just to pass inspection. If your home already shows any of the signs of a structural problem, that gets sorted before we add a single square foot.
Wondering whether your project needs a permit at all? See do you need a permit to renovate, or read how to choose a contractor before you sign anything.
Thinking about adding on?
Start with an honest conversation. We'll look at your home, tell you what's realistic on your lot, flag anything structural up front, and give you a clear plan and a fixed quote before any work begins.