Bathrooms deliver 70-80% cost recovery at resale in GTA markets. Here’s what to know before starting.
Permit required when:
- Moving or adding plumbing drain/supply lines
- Adding a bathroom in a new location
- Altering load-bearing walls
- Adding a new electrical circuit
Cosmetic work (new tile, vanity, fixtures in existing locations) typically no permit required.
GTA cost ranges (2026):
- Cosmetic refresh (toilet, vanity, mirror, light, paint): $3,000-$7,000
- Full gut, updated fixtures, keeping plumbing locations: $15,000-$28,000
- Full gut with relocated plumbing, walk-in shower, radiant floor: $28,000-$55,000
- Primary ensuite with custom tile shower, soaker tub, double vanity: $45,000-$80,000
Waterproofing: OBC requires waterproof membrane in all wet areas. Best practice for custom tile showers: liquid-applied membrane (Schluter KERDI, Laticrete Hydro Ban). Missing waterproofing is the leading cause of bathroom structural damage.
Fan ventilation: Must exhaust to exterior (not attic). Minimum 50 CFM intermittent. Humidity-sensing fans prevent moisture damage without relying on occupant behaviour.
Bathroom contractor referrals at home.renovation.reviews