Building Permit Drawings in Mississauga.
Residence Redefined prepares permit drawings for Mississauga homeowners — legal basement apartments, additional residential units, custom homes, additions and decks — designed to Ontario Building Code requirements and the City of Mississauga's zoning rules.
Request a ConsultationPermit services for Mississauga homeowners.
Legal Basement & Secondary Dwelling Units
Mississauga basement apartments with egress windows, fire separation and separate-entrance planning, drawn for city review.
View service →Custom Homes, Additions & Rebuilds
Additions, second storeys and rebuilds on Mississauga lots, with zoning review before drawings begin.
View service →ADU, Garden & Laneway Suites
Garden and laneway suites for Mississauga lots — feasibility, servicing review and OBC Part 9 drawings.
View service →Deck Permits
Deck permit drawings for Mississauga backyards — layout, framing, guards and stairs for municipal submission.
View service →City of Mississauga Building Division reviews every drawing set.
Mississauga's mature neighbourhoods make basement apartments, additions and backyard suites some of the most requested residential projects. Each goes through the City of Mississauga's Building Division, where drawings are checked against the city's zoning by-law — setbacks, lot coverage, parking and unit rules — and Ontario Building Code requirements. We prepare the design and documentation for that process and support responses to reviewer comments.
- Drawings checked against Mississauga's zoning by-law before submission
- Secondary units planned within the city's zoning and servicing rules
- Permit packages assembled for the City's online submission process
- Responses to plan review comments prepared and resubmitted
- Port Credit
- Cooksville
- Streetsville
- Meadowvale
- Churchill Meadows
- Lorne Park
Not sure if your property is covered? Send us the address and we'll confirm what applies to your lot.
Tell us what you're planning in Mississauga.
Name, email, phone and city — that's all we need to get started. Pick the service you're interested in and we'll take it from there.
Mississauga permit FAQs
Do I need a permit for a basement apartment in Mississauga?+
Yes. Converting a basement into a legal second dwelling unit requires a building permit. The City of Mississauga reviews the drawings for zoning compliance and for Ontario Building Code requirements — ceiling height, egress, fire separation, ventilation and more. We prepare the drawings and documentation for that review.
Do I need a permit for a deck in Mississauga?+
In most cases, yes. A deck generally needs a permit when it is higher than about 0.6 m (24 in.) above grade or attached to the house. Mississauga's Building Division sets the exact thresholds, so we confirm the scope before drawings begin.
Can I add a garden suite on my Mississauga lot?+
Ontario municipalities are now required to allow additional residential units on many residential lots, and Mississauga permits this within its zoning rules. Feasibility depends on lot size, setbacks, coverage, servicing and parking. We start with a zoning feasibility review, then prepare the permit drawings.
How long does a Mississauga permit take?+
Review timelines depend on the project type, how complete the submission is and the city's review queue. Complete, code-compliant drawings are the best way to avoid resubmittals — and if the reviewer issues comments, we prepare the revisions and resubmit.
Start Your Mississauga Permit Project
Send us the address and what you have in mind — we'll tell you what's realistic.