Multiplex - Design Process

3 to 6 units are now allowed on many residential lots throughout BC.

In Vancouver, plexes are allowed a density of 1.0FSR, while Net-Zero or Passivhaus plexes can achieve a bonus up to ~1.2 FSR.
In Burnaby BC and other cities, there is no FSR cap, just a limit on height and setbacks. Give us a call / email to discuss what’s possible on your lot.

See an explainer video with Lanefab co-owner Bryn Davidson, produced by HAVAN: https://www.youtube.com/watch?v=lfB91D8SQw4

As of 2026 the City of Vancouver’s “zero emissions” density bonus (sometimes known as the Net Zero Density Bonus) now requires an embodied carbon calculation, and Lanefab is one of the few teams with direct experience and the ability to deliver these projects. Ask us how!

Step 1a - The Massing Study

A digital architectural rendering of a modern multi-story residential building with large glass windows, balconies, and a mix of flat and pitched roof sections, surrounded by trees and parked cars.

Step 1b - Explore Massing with Density Bonuses (Vancouver)

Architectural rendering of different housing options with detailed specifications, including Net Zero Duplex, Code Min 4 Plex, Net Zero 3 Plex, and Net Zero 4 Plex, with roof solar panels, trees, and street parking, labeled with FSR ratios, on a sidewalk with the website lanefab.com.

Step 1c - Detailed Concept Model

Step 1d - Preliminary Cost Estimate

Step 2 - Engineering and Permit Drawings

Step 3 - Construction Documents, Costs and Final Specs