RenoIntel › Permit Directory › Ontario › St. Catharines

St. Catharines Building Permits

Building permit requirements, fees, department contacts, and application process for St. Catharines, Ontario. RenoIntel tracks 9,629 building permits in St. Catharines.

St. Catharines, ON Ontario 9,629 Permits Tracked Large City
Total Permits Tracked
9,629
In RenoIntel database
Added Last 30 Days
8,047
Active permit flow
Residential Permits
4,968
Homes & dwellings

Building Department

📞Phone905-688-5600
✉️Emailbuilding@stcatharines.ca
📍Address50 Church St, St. Catharines, ON L2R 7C2
🕐HoursMonday–Friday 8:30am–4:30pm (verify with city)
🌐PortalApply Online →

Permit Application Process

1
Confirm Requirements
Contact the St. Catharines building department or visit their online portal to confirm whether your project requires a permit.
2
Prepare Your Application
Gather site plans, drawings, and project specifications. Many municipalities require signed drawings from a licensed designer for structural work.
3
Submit & Pay Fees
Submit your application in person or online. Fees are typically calculated based on the declared construction value.
4
Wait for Review
Review times vary by municipality and project complexity — typically 5–15 business days for residential permits.
5
Receive Permit & Post It
Once approved, post your permit on site where it's visible. Work must not begin until the permit is issued.
6
Schedule Inspections
Call the building department to book required inspections at each stage (framing, insulation, final).
For Homeowners
Planning a Renovation in St. Catharines?
Budget your project, understand what permits you need, and find trusted local contractors — all free on RenoPlanner.ai.
Try RenoPlanner.ai →
For Contractors & Businesses
Get Found on RenoPlanner.ai
List your business on RenoPlanner.ai and connect with homeowners actively planning renovations in your area.
Connect with Projects →

Common Permit Types in St. Catharines

Permit Type
Kitchen Renovation Permit
Required for structural changes, electrical upgrades, or plumbing work in kitchen renovations.
May be required
Permit Type
Basement Finishing Permit
Required to finish or renovate a basement, including adding bedrooms, bathrooms, or living space.
May be required
Permit Type
Home Addition Permit
Required for any addition that increases the footprint or height of your home.
May be required
Permit Type
Deck & Patio Permit
Required for decks over 24" (60cm) above grade or attached to the house.
May be required
Permit Type
New Home Construction Permit
Required to build a new residential structure. Includes site plan, foundation, and framing inspections.
May be required
Permit Type
General Renovation Permit
Required for structural, electrical, plumbing, or HVAC work in existing dwellings.
May be required
Permit Type
Demolition Permit
Required before demolishing any structure. Utilities must be disconnected prior to approval.
May be required
Permit Type
HVAC & Mechanical Permit
Required for furnace replacement, AC installation, duct work, or ventilation changes.
May be required

Other Municipalities in Ontario

Toronto
Ontario · 2,794,356 pop.
Ottawa
Ontario · 1,017,449 pop.
Mississauga
Ontario · 717,961 pop.
Brampton
Ontario · 656,480 pop.
Hamilton
Ontario · 569,353 pop.
London
Ontario · 422,324 pop.
Markham
Ontario · 338,503 pop.
Vaughan
Ontario · 323,103 pop.

View all Ontario municipalities →