Ontario Design Studio provides BCIN-certified building permit drawings across the City of Cambridge, formed from the historic communities of Galt, Preston, and Hespeler. From heritage cores to newer subdivisions, we know Cambridge’s zoning by-law and Region of Waterloo servicing requirements.
Building Permit Services in Cambridge
Whatever you are building in Cambridge, 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
Cambridge Local Considerations
- Three historic cores: Galt, Preston, and Hespeler each include heritage conservation districts that require additional review.
- Grand River corridor: lots near the Grand River can carry floodplain limits and Grand River Conservation Authority review.
- Region of Waterloo servicing: coordinated with the Region.
Ready to start your Cambridge project?
Ontario Design Studio delivers BCIN-certified, OBC-compliant permit drawings across Cambridge 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 Cambridge Building Permit Process Works
Every building permit in Cambridge is reviewed against the Ontario Building Code and the City’s zoning by-law. Because Cambridge is part of the Region of Waterloo, 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, Cambridge-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 Cambridge
Under Ontario’s housing legislation, up to three residential units are permitted as-of-right on most Cambridge 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 Cambridge by-law
Permit Drawing Costs in Cambridge
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 Cambridge project.
Cambridge Neighbourhoods We Serve
We prepare permit drawings throughout Cambridge, including Galt, Preston, Hespeler, West Galt, Blair, Southwood, and Fiddlesticks.
Why Homeowners in Cambridge 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 Cambridge 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 Cambridge 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.
How does building near the Grand River affect my Cambridge permit?
Lots near the Grand River may fall within a regulated floodplain, which requires Grand River Conservation Authority review and can limit where and how you build. We confirm whether your property is affected and design accordingly.
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