Duplex Design Guide for BC
Complete BC duplex design guide: lot requirements, BC catalogue designs, costs ($700K-$1.2M), where permitted, fire separation, and energy requirements.
BC Duplex Design Guide
Duplexes are the entry point for multiplex development in BC. With lower costs ($700K-$1.2M) and simpler construction than larger multiplexes, they are ideal for smaller lots and homeowners looking to start with a manageable project.
Duplex Design Options
- Side-by-side: Two units sharing a centre wall, each with own entrance
- Stacked: One unit above another, shared exterior entrance
- BC catalogue: 2 standardized duplex designs available
- Typical lot: 33ft+ frontage, 3,500+ sqft lot area
- Fire separation: 1-hour fire-rated assembly between units required
Duplex Economics
Duplexes offer lower entry cost but also lower returns than fourplexes or sixplexes. If your lot supports more units, building more will generate better returns. VanPlex analyzes the optimal unit count for your specific lot.
Frequently Asked Questions
- How much does it cost to build a duplex in BC?
- Duplex construction costs range from $700K-$1.2M depending on size, finishes, and location. This is lower than larger multiplexes but returns are proportionally less.
- Should I build a duplex or fourplex?
- If your lot supports a fourplex, it will generate significantly better returns. Duplexes make sense only on lots too small for more units. VanPlex shows your lot's maximum potential.
- What are the fire separation requirements for duplexes?
- BC Building Code requires a 1-hour fire-rated assembly between duplex units, including walls and floor/ceiling assemblies. VanPlex designs meet all code requirements.
Get Started Today
Check your property's multiplex eligibility and see your potential returns with VanPlex's free analysis tool.