British Columbia building code question

What are the BC building code requirements for laneway houses and garden suites?

BC has provincial and municipal provisions for laneway houses and garden suites covering maximum size, setbacks, building code compliance as accessory dwelling units, BC Energy Step Code requirements, and accessibility provisions. Municipal bylaws set lot-specific criteria for size, height, and placement.

Laneway houses and garden suites have become a significant housing form in British Columbia, particularly in Vancouver and surrounding municipalities. These are detached accessory dwelling units that must meet the BC Building Code as small residential buildings while also complying with municipal size, setback, and design requirements. The BC Energy Step Code applies, and evolving accessibility requirements affect unit design. Each municipality sets its own maximum size, height, and lot coverage rules.

What to check first

  • Laneway houses and garden suites must comply with the BC Building Code as Part 9 residential buildings.
  • BC Energy Step Code requirements apply and may vary by municipality and step level.
  • Municipal bylaws set maximum size, height, setbacks, and parking requirements specific to each community.

Jurisdiction notes

BC Building Code

Laneway houses must meet BC Building Code Part 9 requirements as small residential buildings.

BC Energy Step Code

Energy performance requirements vary by municipality based on which Step Code level has been adopted.

Municipal bylaws

Maximum floor area, height, setbacks, and design guidelines vary significantly between municipalities.

Work through it in this order

  1. Check your municipality's laneway house or garden suite zoning bylaw for size, height, and setback limits.
  2. Determine the applicable BC Energy Step Code level for your municipality.
  3. Design to BC Building Code Part 9 requirements for structural, fire safety, plumbing, and accessibility.
  4. Apply for the building permit and confirm any additional municipal design review requirements.

Common questions

How big can a laneway house be in BC?

Maximum size varies by municipality. Check your local zoning bylaw for the specific floor area limit for your lot.

What Energy Step Code level applies?

The required step level depends on your municipality and when the permit is submitted. Some municipalities have adopted higher steps than the provincial minimum.

Can I rent out a laneway house?

Most municipal laneway house bylaws permit rental use. Check your local bylaw for any restrictions on short-term versus long-term rental.