What are the permit requirements for adding a new bathroom in a Vancouver secondary suite?

Adding a new bathroom to a secondary suite in Vancouver requires a building permit, a plumbing permit, and an electrical permit — there are no exceptions. This is one of the most permit-intensive bathroom projects you can undertake because it involves new plumbing rough-in, new electrical circuits, ventilation, and must comply with both the BC Building Code requirements for bathrooms and the City of Vancouver's specific secondary suite regulations.

The building permit covers the overall construction — framing, waterproofing, ventilation, and ensuring the new bathroom meets minimum code dimensions and accessibility requirements. The BC Building Code requires a minimum clear floor area in front of fixtures, a minimum ceiling height of 1.95 metres (though 2.1 metres is standard), and a door that can close without obstructing fixture access. Building permit fees for a secondary suite bathroom addition in Vancouver typically run $300–$600, depending on the overall project scope. If the suite itself is not already legally permitted, you will need to address that first — the City of Vancouver has a secondary suite program that covers the requirements.

Plumbing permits are required for all new drain and supply rough-in. Adding a bathroom means connecting to existing drain stacks, running new supply lines, and installing new drain, waste, and vent (DWV) piping. This work must be done by a licensed plumber and inspected before walls and floors are closed up. The plumbing rough-in inspection is critical — the inspector verifies drain sizing (typically 3-inch for the toilet, 1.5-inch or 2-inch for the shower and sink), proper venting to prevent sewer gas issues, trap installation, and anti-scald protection on hot water supply. Plumbing permit fees are typically $100–$300.

Electrical permits cover all new circuits — bathroom receptacles (GFCI-protected, on a dedicated 20-amp circuit), lighting, exhaust fan wiring, and any heated floor systems. All electrical work must be performed by a licensed electrician and inspected through Technical Safety BC. Electrical permit fees are typically $100–$200.

Cost Expectations for a New Suite Bathroom

Adding a complete new bathroom (toilet, shower, and vanity with sink) to a secondary suite in Metro Vancouver typically costs $15,000–$35,000 depending on several factors. If the new bathroom is located near the existing drain stack — within a few feet — plumbing costs are significantly lower than if drains must run across the floor slab or through the ceiling below. Connecting to an existing stack typically costs $2,000–$5,000 for plumbing rough-in, while running new drain lines across a concrete slab can cost $5,000–$10,000 or more due to concrete cutting and patching.

The bathroom itself follows standard Metro Vancouver pricing: a basic shower with acrylic base runs $1,500–$3,500 installed, a custom tile shower with proper Schluter Kerdi waterproofing runs $4,000–$8,000, a toilet installation costs $400–$1,200, and a vanity with countertop and plumbing connections costs $2,000–$5,000. Add $300–$800 for an exhaust fan ducted to the exterior, $300–$800 for lighting, and $1,000–$3,000 for tile flooring.

Ventilation deserves special attention in secondary suite bathrooms. Many suites are at or below grade (basement suites), where moisture management is already challenging. The BC Building Code requires mechanical ventilation in all bathrooms without operable windows — and even with a window, mechanical ventilation is essential in Vancouver's humid climate. The exhaust fan must vent to the exterior through a dedicated duct, never into the attic, crawl space, or shared wall cavity. For basement suites, this often means running duct work through the rim joist to an exterior wall cap.

Waterproofing is non-negotiable in any new suite bathroom. All shower walls and the shower floor must have a continuous waterproof membrane — Schluter Kerdi sheet membrane or a liquid-applied membrane like RedGard. In a below-grade suite, moisture from the surrounding soil adds another layer of concern, making proper waterproofing even more critical than in an above-grade bathroom.

Timeline for permits in Vancouver is currently 4–8 weeks for residential building permits, so factor this into your project planning. Your contractor should handle the permit applications as part of the project, and the cost of permits ($500–$1,100 total for building, plumbing, and electrical) should be included in the project quote.