Ontario Design Studio provides BCIN-certified building permit drawings across the Town of Whitby, from the historic downtown and Port Whitby waterfront to the fast-growing community of Brooklin. We know Whitby’s zoning by-law and Durham Region servicing requirements.
Building Permit Services in Whitby
Whatever you are building in Whitby, our BCIN-certified team prepares the complete, Ontario Building Code–compliant drawing package your project needs:
- Residential permits - new homes, additions, and renovations
- Legal basement apartment conversions
- Secondary suites and garden suites
- Deck and porch permits
- Load-bearing wall removals with structural engineering
- Commercial permits and tenant fit-outs
Whitby Local Considerations
- Brooklin growth: north Whitby is expanding quickly, with new subdivisions and strong demand for additions and second units.
- Heritage and waterfront: downtown Whitby heritage properties and Port Whitby lots can carry additional review.
- Durham Region servicing: coordinated with Durham Region.
Ready to start your Whitby project?
Ontario Design Studio delivers BCIN-certified, OBC-compliant permit drawings across Whitby and the surrounding area. Call 416-558-9607 or request your free quote - most drawing packages are ready in 5–10 business days.
How the Whitby Building Permit Process Works
Every building permit in Whitby is reviewed against the Ontario Building Code and the City’s zoning by-law. Because Whitby is part of Durham Region, some projects require coordination with the Region for water and sewer servicing. Ontario legislation targets a 10-business-day review for houses once a complete application is filed, so a complete, professional first submission is the fastest route to approval.
- Zoning check - we confirm setbacks, height, and lot coverage before drawing a single line.
- Drawing preparation - your complete, Whitby-formatted package, typically in 5–10 business days.
- Submission - we file through the City’s online permit system and respond to examiner comments.
- Permit & inspections - you build, with City inspections through to final sign-off.
Second Units & Garden Suites in Whitby
Under Ontario’s housing legislation, up to three residential units are permitted as-of-right on most Whitby lots - a main dwelling plus two additional residential units, such as a basement apartment and a garden suite. A building permit and inspections are still required, and the drawings must show fire separation, egress, ceiling height, and independent ventilation. We prepare complete second-unit packages so your rental is fully legal and insurable.
What’s Included in Your Drawing Package
- Site plan based on your legal survey - setbacks, lot coverage, and parking
- Existing and proposed floor plans with dimensions
- Exterior elevations and building cross-sections
- Structural details and, where required, P.Eng-stamped drawings
- Energy compliance (SB-12) and Schedule 1 designer information
- Zoning summary confirming conformity with the Whitby by-law
Permit Drawing Costs in Whitby
Drawing fees depend on your project type and complexity, and are separate from the City’s municipal permit fee. See our 2026 building permit cost guide for full ranges, or call 416-558-9607 for a free quote on your Whitby project.
Whitby Neighbourhoods We Serve
We prepare permit drawings throughout Whitby, including Downtown Whitby, Brooklin, Port Whitby, Williamsburg, Rolling Acres, Pringle Creek, and Taunton North.
Why Homeowners in Whitby Choose Ontario Design Studio
- BCIN-Certified - provincially registered, OBC-compliant drawings
- Complete submissions that reduce examiner back-and-forth and delays
- 5–10 day turnaround on most residential packages
- We manage the process - submission, examiner responses, and resubmissions
Frequently Asked Questions
Do I need a building permit for a basement apartment in
Yes. Creating or legalizing a basement apartment (a second unit) in Whitby requires a building permit with drawings showing fire separation, egress, ceiling height, and interconnected smoke and CO alarms. Ontario permits additional residential units province-wide, but the permit and inspections remain mandatory before the suite is legal.
How do I apply for a building permit in
Applications are filed through the City of Whitby online building permit system. Ontario Design Studio prepares your complete drawing package, submits the application, and manages examiner comments and any resubmissions as part of our service.
How long does a building permit take in
Ontario legislation targets a 10-business-day review for houses once a complete application is received. Incomplete or non-compliant drawings reset that clock, which is why a complete, professionally prepared first submission matters.
Can I build a garden suite or second unit in Whitby?
Yes. Additional residential units, including garden suites, are permitted across Whitby subject to zoning limits on size, height, and setbacks. We confirm what your lot allows and prepare the complete permit package.
Related Services
- Legal Basement Apartment Permits
- Garden Suite & Laneway House Permits
- Our Permit Process, Step by Step
- Permit Rejected? We Fix and Resubmit
- Building Permit Drawing Cost Guide