We provide professional basement permit drawings in Oshawa for homeowners looking to create legal secondary dwelling units. Our architectural design services ensure your basement apartment plans meet Ontario Building Code requirements and city permit regulations.
Our team prepares detailed basement permit drawings in Oshawa including floor plans, sections, and permit-ready documentation to help you get approval faster.
If you are also planning to expand your home, we can help design a home addition that integrates with your existing structure.
Custom Plans Designed for Guaranteed Permit Approval
As housing needs evolve across Ontario, Accessory Dwelling Units (ADUs) and Secondary Dwelling Units (SDUs) are emerging as smart, flexible solutions for maximizing residential space and property value. These additional units—whether detached in a backyard, converted from a basement, or added to a second floor—are now permitted in most residential zones, thanks to recent updates in municipal zoning by-laws.
At Archi1 Designs & Tech, we specialize in creating fully customized, code-compliant designs for ADUs and SDUs that align with Part 9 of the Ontario Building Code. Our expertise ensures a smooth, stress-free approval process—giving homeowners and investors confidence that their secondary unit plans meet all building and zoning requirements.
✔ Tailored design solutions for in-law suites, rental units, and multigenerational living
✔ Up-to-date compliance with local zoning and building code changes
✔ Clear, detailed drawings ready for submission
✔ Permit approval guaranteed—we support revisions needed to get your permit approved
If you need basement permit drawings in Oshawa, our experienced design team can help you prepare permit-ready architectural plans quickly.
If you would like to discuss your project, you can book a consultation with our design team.