Basement Bathroom Addition Cost Vancouver 2025
Adding a Bathroom to the Basement in Vancouver
Adding a bathroom to an existing basement is one of the most impactful investments for secondary suite creation or adding convenience to a finished basement. Costs range from $12,000 (simple half-bath) to $35,000+ (full bathroom with shower).
Cost by Bathroom Type
| Type | Cost Range |
|---|---|
| Half bath (toilet + vanity) | $8,000–$15,000 |
| 3/4 bath (toilet, vanity, shower) | $16,000–$32,000 |
| Full bath (toilet, vanity, shower/tub) | $20,000–$42,000 |
Key Complexity Factor: Drain Depth
The biggest variable in basement bathroom additions is whether the existing floor drain is deep enough to accommodate the new toilet and shower drains by gravity, or whether an ejector pump (sewage ejector) is needed:
- Gravity drain: Requires sufficient drop to existing stack. Less expensive
- Sewage ejector pump: Required when drains can’t run by gravity. Adds $1,500–$3,500
- Concrete cutting: Often needed to install new drains below slab. Adds $2,000–$5,000
Permit Required
Adding a new bathroom in BC requires plumbing and building permits. Work must be done by a licensed plumber. Processing: 2–4 weeks.
→ See also: Vancouver Renovation Cost Guide 2026
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