Laneway houses and multiplex conversions are reshaping Toronto’s renovation landscape. This thread covers the 2026 policy environment and build costs.
Toronto 2026 As-of-Right Permissions
Most residential lots can now have 4 units as-of-right:
- Main house
- Basement suite
- Laneway or garden suite
- Multiplex conversion within existing footprint
No rezoning required. Building permits only.
Laneway House Build Costs
- Custom (400-600 sq ft): $280,000-$420,000
- Prefab/modular: $180,000-$280,000 plus site work
- Utility connections and permit fees: add $30,000-$60,000
- Rental income: $2,000-$3,500/month for well-designed unit
Multiplex Conversion Costs
Converting to legal 4-plex: $150,000-$350,000. Key costs: fire separation, separate electrical meters, plumbing for additional kitchens and bathrooms, fire egress compliance.
Lot Eligibility for Laneway Houses
Requires lane access at rear, minimum setbacks, and lot coverage compliance. Check your lot with a pre-application consultation at City of Toronto before committing to design.
LF Builders builds laneway houses and multiplex conversions: https://lfbuilders.ca
Discuss laneway and multiplex projects at https://home.renovation.reviews