Multi-Unit & Triplex Building Permits Toronto
Convert or Build Multi-Family Homes with Expert Permit Guidance
Cadaxx specializes in multi-unit developments, from duplexes to four-plex conversions, turning homes into income-generating properties and thriving communities
At Cadaxx Design, we specialize in designing duplexes, triplexes, and townhouses that combine functionality, modern living, and long-term value. These multi-family dwellings are an excellent solution for maximizing property potential, generating rental income, or creating flexible living arrangements for extended families. Serving Toronto and the GTA, our team provides complete residential design and building permit services tailored to your unique project.
Designing smaller-scale multi-family housing requires attention to zoning bylaws, building code compliance, fire separation, and accessibility.
We carefully consider site conditions, space efficiency, and neighborhood character to create layouts that feel spacious, practical, and attractive. Whether you are converting an existing single-family home into a duplex, adding a triplex to your lot, or developing a row of modern townhouses, we ensure your project is designed with both residents and investors in mind.
From feasibility studies and concept design to permit-ready construction drawings, Cadaxx Design streamlines the process to save you time and avoid delays. We coordinate with engineers and city requirements so you can move forward with confidence.
With every duplex, triplex, or townhouse project, our goal is to deliver innovative, cost-effective, and sustainable solutions that make the most of your property and investment.
📞Contact us to schedule your consultation today to start your project
416 639 09 04
Lot Severance & Two Custom Homes
Rathburn Rd
Etobicoke
This custom home on Rathburn Rd features a contemporary façade with warm materials and large windows. The design focuses on efficient planning, natural light, and strong street presence. Now built, it reflects a complete transformation from concept to finished modern residence.
Completed 2020
Second Unit Addition Over the Garage
Sidney Dr
Mississauga
This second apartment on Sidney Dr was designed as a private, fully functional secondary suite with modern finishes and efficient space planning. The layout provides bright living areas, improved functionality, and full compliance with zoning and permit requirements for multi-unit residential use.
Completed 2023
Multi-Unit Apartment Conversion
Glenholme Ave
Toronto
This multi-unit apartment on Glenholme was designed for efficient land use and full compliance with Toronto’s zoning and multi-unit housing standards. Detailed permit drawings coordinated entrances, fire separations, and shared services, delivering safe, functional rental units within a compact urban footprint.
Completed 2020
Multi-Unit Apartment Conversion
Northcliffe Blvd
Toronto
A contemporary multi-unit home on Northcliffe Blvd in North York. Cadaxx Design prepared the full permit drawings for this conversion, transforming a single-family dwelling into efficient modern suites. The design balances functionality, comfort, and city compliance while maintaining the original streetscape character and enhancing curb appeal with a clean façade.
Completed 2018
Multi-Unit Apartment Conversion
Clouston Ave
Toronto
This project on Clouston converted an older home into a functional 3-unit building with self-contained suites. Permit drawings addressed OBC compliance for exits, ventilation, and fire separations. The upgraded structure now provides flexible living options, improved interiors, and better energy performance within a mature Toronto neighbourhood.
Completed 2018
Multi-Unit Apartment Conversion
Yore Rd
Toronto
This project converted an existing home on Yore into a legal 3-unit apartment building meeting Toronto’s multi-unit zoning requirements. The design incorporated separate entrances, fire-rated construction, efficient layouts, and coordinated services, creating comfortable rental units while retaining elements of the original home’s character.
Completed 2019
Multi-Unit Apartment Conversion
Holburne Rd
Mississauga
Proposed multiplex development on Holburne Road in Mississauga featuring contemporary design, efficient unit layouts, and a lot severance strategy. The project balances increased density with neighbourhood context while meeting zoning, planning, and municipal approval requirements.
Design