How much do contractors charge for bump out addition in Vancouver?

Bump-out additions in Metro Vancouver typically run $350–$650+ per square foot for the finished space, making a modest 100–200 sq ft bump-out a $35,000–$130,000+ project depending on scope and finishes.

The wide range reflects the complexity of bump-outs compared to full additions — while they're smaller in footprint, they're surprisingly expensive per square foot because you're still dealing with foundation work, structural modifications, roofline integration, and exterior cladding, all compressed into a small area. There's relatively little economy of scale, and Vancouver's labour market is among the tightest in Canada.

Typical Cost Ranges for Metro Vancouver

Here's how bump-out costs generally break down by project type:

• Small cantilevered bump-out (2–4 ft projection, no new foundation): $25,000–$60,000
• Mid-size bump-out with foundation (4–8 ft, 80–150 sq ft): $55,000–$110,000
• Larger bump-out or multi-room expansion (150–300 sq ft): $100,000–$200,000+

These ranges assume mid-grade finishes. High-end materials, complex rooflines, or heritage homes can push costs significantly higher.

What drives the price up in Vancouver specifically includes seismic requirements under BCBC 2024 — any structural addition must meet updated lateral bracing standards that took effect March 10, 2025. If your home was built before 1980, there's a real chance the existing structure needs seismic upgrading as part of the project, which can add $10,000–$30,000 on its own. Vancouver's rainfall also means rain screen assemblies and proper flashing details are non-negotiable, not optional extras.

What's typically included in a contractor's quote: demolition, framing, foundation (if required), roofing tie-in, exterior cladding, insulation, drywall, and basic electrical. What's often excluded: interior finishes, custom millwork, plumbing if you're expanding a kitchen or bathroom, permits, and engineering fees.

Vancouver-Specific Costs and Permits

Permits are mandatory and non-negotiable. Expect to pay $2,000–$8,000+ in permit fees depending on your municipality and project value, plus a structural engineer's report ($1,500–$4,000) — required for any addition that touches the building envelope or load-bearing elements. If you're in the City of Vancouver, budget 4–8 weeks minimum for permit approval; suburban municipalities like Surrey, Coquitlam, or Langley are often faster.

If you're in a strata property, a bump-out is almost certainly touching common property (exterior walls, roofline) and will require a ¾ vote at a general meeting under Section 71 of the Strata Property Act — get strata council involved early before spending money on design.

Professional Guidance

This is firmly in licensed-contractor territory. Bump-outs require a building permit, structural engineering, and coordination of multiple trades (framing, roofing, electrical, possibly plumbing). A general contractor will manage this, but make sure they carry WorkSafeBC coverage and adequate liability insurance ($2M minimum). Ask to see their BC Housing registration if the scope approaches anything resembling a new dwelling unit.

Next Steps

Get at least three quotes from licensed general contractors — costs vary significantly between firms right now given material and labour volatility. Before quotes, have a rough sketch or concept ready so contractors are pricing the same scope. An architect or designer ($150–$250/hr) can help you develop that scope and may save you money by optimizing the design before construction begins.

Browse licensed contractors in our directory at the Vancouver Construction Network to find experienced addition specialists in your area.