Building Permit Guide
Westmount

Kitchen Renovation

Permit required if moving or adding plumbing (sink, dishwasher lines)

Usually Required

Fee: $150–$500 · 2–6 weeks

Bathroom Renovation

Plumbing permit required for new or relocated fixtures

Usually Required

Fee: $150–$450 · 2–5 weeks

Basement Finishing

Building permit required to finish an unfinished basement

Always Required

Fee: $200–$800 · 3–8 weeks

Home Addition

Building permit always required for any addition

Always Required

Fee: $500–$3000 · 6–16 weeks

Roof Replacement

Permit required in most Ontario and BC municipalities

Usually Required

Fee: $100–$400 · 1–3 weeks

Deck / Patio Construction

Permit required for attached decks

Usually Required

Fee: $100–$350 · 2–5 weeks

Landscaping

Generally no permit required for landscaping

Rarely Required

Fee: Up to $200 · 1–2 weeks

New Home Construction

Full building permit always required

Always Required

Fee: $2000–$15000 · 8–20 weeks

Flooring Installation

No permit required for most flooring replacements

Rarely Required

Fee: Up to $100 · Same day–1 week

Windows & Doors

Permit required if enlarging or creating a new window or door opening

Sometimes

Fee: $75–$250 · 1–3 weeks

Electrical Upgrades

Electrical permit required for all new wiring, panels, and circuit work

Always Required

Fee: $100–$500 · 1–4 weeks

HVAC / Mechanical

Mechanical permit required for new HVAC systems

Always Required

Fee: $100–$400 · 1–3 weeks

Solar Panel Installation

Building permit for roof mounting and structural loads

Always Required

Fee: $150–$600 · 2–6 weeks

Garage / Carport

Building permit required for all new garages and carports

Always Required

Fee: $200–$800 · 3–8 weeks