Multiplex Development in Burnaby: Rules, Costs, Timelines, and ROI (2026)

What "Multiplex" Means in BC (2026 Context)

In the context of British Columbia's 2026 housing landscape, a "multiplex" refers to a small-scale multi-unit housing (SSMUH) development on a single residential lot. This typically includes 3 to 6 units, such as triplexes, fourplexes, and sixplexes, designed to fit within the scale of existing single-family neighborhoods. The provincial legislation, specifically Bill 44, has mandated municipalities to allow this form of density to address the "missing middle" housing gap.

For Burnaby, this means moving away from exclusive single-family zoning. A multiplex is no longer a special exception requiring a complex rezoning process; it is now a permitted use under the new R1 Small-Scale Multi-Unit Housing (SSMUH) District. This shift is designed to create more diverse housing options for families, seniors, and young professionals who want to live in established neighborhoods but cannot afford a detached home.

What Burnaby Allows Today (Zoning + Where Multiplexes Are Possible)

As of 2026, the City of Burnaby has fully integrated provincial SSMUH mandates into its zoning bylaw. The key changes include:

R1 SSMUH District: Most single-family and two-family lots have been rezoned to the R1 SSMUH District. This allows for up to 4 units on standard lots and up to 6 units on larger lots near transit hubs [1].
Height Limits: The maximum permitted height for multiplexes has been adjusted to 3 storeys (approx. 10 meters), down from an initially proposed 4 storeys, to better align with neighborhood character [2].
Floor Area Ratio (FAR): Density is now primarily controlled by form-based code (setbacks, height, lot coverage) rather than strict FAR limits, allowing for more flexible designs [3].
Parking: Parking minimums have been reduced, especially for projects near transit, to lower construction costs and encourage sustainable transport.

Where can you build? Multiplexes are permitted on almost all residential lots previously zoned R1, R2, R3, R4, R5, R9, R10, R11, and R12. However, specific site constraints like slope, heritage status, or environmental setbacks may still apply.

Step-by-Step Process: Feasibility → Design → Permits → Build → Occupancy

Developing a multiplex in Burnaby follows a structured path. Here is the typical roadmap for 2026:

1. Feasibility Study (2-4 Weeks)

Before buying land or hiring an architect, conduct a thorough feasibility analysis.

Zoning Check: Confirm the lot is in the R1 SSMUH District.
Site Analysis: Check for easements, rights-of-way, and topography (sloped lots add cost).
Financial Pro Forma: Estimate costs and projected revenue to ensure the project makes financial sense.

2. Design & Pre-Application (2-3 Months)

Work with an architect experienced in Burnaby's specific bylaws.

Concept Design: Create site plans and floor layouts.
Pre-App Meeting: Meet with city planners to identify potential issues early.

3. Development Permit (DP) & Building Permit (BP) (12-18 Months)

This is often the longest phase.

DP Application: Submit detailed architectural drawings, landscape plans, and arborist reports.
BP Application: Once DP is approved, submit technical drawings for structural, mechanical, and electrical systems.
Timeline Note: While the province aims for faster approvals, current processing times in Burnaby for multiplexes are averaging 12-18 months [4].

4. Construction (12-15 Months)

Demolition & Excavation: Remove existing structures and prepare the site.
Framing & Lock-up: The structure goes up.
Finishing: Interior and exterior finishes are applied.
Landscaping: Final site work.

5. Occupancy & Sale/Rental

Final Inspections: City inspectors sign off on the building.
Occupancy Permit: The building is legally ready for residents.

Cost Breakdown: Soft Costs vs Hard Costs vs Contingencies

Understanding the costs is critical for a successful project. These are estimated ranges for 2026 based on current market data.

Hard Costs (Construction)

Range: $350 - $450 per square foot [5].
Includes: Demolition, excavation, concrete, framing, roofing, windows, interior finishes, landscaping.
Note: Sloped lots or premium finishes will push this higher.

Soft Costs (Consultants & Fees)

Range: $80 - $120 per square foot.
City Fees: Development Cost Charges (DCCs) and Amenity Cost Charges (ACCs) have increased significantly, adding approx. $38,000+ per unit [6].
Consultants: Architect, structural engineer, civil engineer, landscape architect, surveyor, energy consultant.
Holding Costs: Property taxes, insurance, and loan interest during the 2-3 year process.

Contingency

Recommendation: 10-15% of hard costs. Unforeseen issues (e.g., bad soil, delays) are common.

Key Numbers Table:

Timeline Breakdown: Typical Durations

Feasibility: 1 Month
Design: 3 Months
Permitting (DP + BP): 12-18 Months
Construction: 12-15 Months
Total Project Duration: 2.5 - 3.5 Years

Note: Timelines are highly dependent on the complexity of the site and the quality of your consultant team.

Financing Basics for Small Developers

Financing a multiplex is different from a standard mortgage.

Land Loan: Typically 50-65% Loan-to-Value (LTV). You need significant equity upfront.
Construction Loan: Interest-only payments during the build. Funds are released in "draws" based on progress.
Take-out Financing: Once complete, you refinance into a standard commercial or residential mortgage (CMHC MLI Select is a popular option for rentals).

Return Profile: ROI, Resale, and Rent Stabilization

Build-to-Sell: Target a profit margin of 15-20% on total cost. In a flat market, this can be tight.
Build-to-Rent: Focus on Cap Rate and Cash-on-Cash return. With high construction costs and interest rates, long-term appreciation is often the primary driver.
Rent Stabilization: New purpose-built rentals are exempt from rent control for the first tenant, but subsequent increases are capped by the province.

Common Pitfalls

Underestimating City Fees: The new ACCs and DCCs can kill a pro forma if not accounted for.
Ignoring Site Constraints: A significant slope can add $100k+ to excavation costs.
Utility Upgrades: Upgrading water or sewer lines to service 4-6 units can be unexpectedly expensive.
Neighbor Opposition: While zoning is "as-of-right," neighbors can still cause delays during the design review process.

Operator Case Study Template

Project: The Burnaby Fourplex (Hypothetical) Lot Size: 50' x 120' (6,000 sq ft) Zoning: R1 SSMUH Concept: 4-Unit Townhouse Style Multiplex Total Buildable: ~3,600 sq ft (0.6 FSR equivalent) Projected Cost: $2.2M (Land) + $1.6M (Build + Soft Costs) = $3.8M Total Projected Value: $4.4M ($1.1M per unit) Projected Profit: $600k (15.7% Margin)

Disclaimer: This is a simplified example for illustrative purposes only.

Conclusion

Building a multiplex in Burnaby in 2026 is a viable path to creating value and housing, but it requires professional execution. The "easy" flips are gone; today's market demands rigorous cost control and smart design.

Ready to explore your lot's potential? [Link: Contact] Karimi Developments today for a preliminary site assessment.

Sources & Notes

[1] City of Burnaby, "Provincial Housing Legislation Changes"
[2] City of Burnaby, "Zoning Bylaw Rewrite"
[3] VanPlex, "How to Build a Multiplex in Burnaby (2026)"
[4] Rain City Properties, "Bill 44 Burnaby 2026: New Bylaw Restrictions"
[5] Industry Estimate based on 2025/2026 construction data.
[6] Core Val Homes, "Why Are Burnaby Home Builder Fees So High? A 2026 Guide"

FAQ

Q: Can I build 6 units on my lot? A: typically only if your lot is within 400m of a frequent transit stop and meets minimum size requirements. Most standard lots are limited to 4 units.

Q: Do I need to rezone my property? A: No. If you are in the R1 SSMUH District, the density is permitted "as-of-right," meaning you skip the rezoning phase and go straight to Development Permit.

Q: How much equity do I need? A: Expect to need 35-50% of the total project cost in cash or equity, depending on your lender.

Q: Can I strata-title and sell the units individually? A: Yes, Burnaby allows for the stratification of these units, making them sellable as individual homes.

Q: What is the minimum lot size for a multiplex? A: There is no strict minimum, but lots smaller than 33 feet wide may be challenging to fit 3+ units due to setbacks and access requirements.

Q: Do I need to provide parking? A: Yes, but requirements have been reduced. Check the specific bylaw for your distance to transit.