Getting Started
The team you pick to help you build new units will depend a lot on what kind of project you want to do. Each member of your team has distinct roles. There’s a lot of people you’ll work with to build a multiplex. We’ll begin with the core members.

The one who makes the decisions.

The one who designs it.

The one who builds it.
Speak to an architect or a licensed designer first. They can help you figure out what is possible to build on your lot and check the rules and regulations.
Some designers will provide basic budget numbers for construction cost, but your general contractor will be able to provide more accurate pricing.
Licensed designers prepare drawings sets. These plans and other drawings are like the road map that illustrates the scope of work. All three team members use the drawings to execute the work. The drawing package forms the basis of the contract between you and the contractor.
A Homeowner can submit plans to the city to be reviewed for approvals for buildings with less than 3 units, but we recommend that you ask a licensed designer to do it for you.
As the homeowner (or homeowners!) you are the director of the project. You know how you want the house to feel and what you need to support the way you live. It is also important to remember, as a critical member of the team you have roles and responsibilities. We have outlined the main ones here below:
Roles & Responsibilities:
Some homeowners want to take on some of the scope from other team members to help save money. Depending on your own capabilities, some additional roles a homeowner may take on are:
When assembling your team, we recommend starting with the design professional. The design professional is your primary consultant, or team leader. They will be able to help guide you through the process and advise on any additional team members your project may need. A good design professional can also help you achieve your goals and save your money through creative design solutions.
Roles & Responsibilities:
In Ontario, the construction and renovation of homes must comply with the Ontario Building Code. Municipalities such as Toronto have a specific department that reviews and regulates construction in the city. To build your multiplex, you first must obtain a building permit from the City of Toronto. There are two types of professionals that are legally allowed to design, draw, and submit plans for building permit approval: Architects, and BCIN Designers.
In Ontario, an architect is a highly trained professional who has passed specific educational and professional requirements and received a license from the Ontario Association of Architects (OAA). They are bound to the statutes of the Architects Act and OAA Bylaws to protect the public’s interest and are expected to adhere to the OAA’s Code of Ethics. Additionally, architects carry professional liability insurance and generally are liable for their buildings for up to 15 years.
Architects can draw, design, and submit construction and permit drawing sets on behalf of homeowners for building permits. Additionally, architects can help homeowners navigate the building approval process by working with planners and engineers to have the correct documentation completed. Only architects licensed by the OAA are legally entitled to use the term Architect and offer Architectural Services. All licensed architects in Ontario are listed on the OAA Directory. To look up the license status of your Architect, click here.
Services architects offer:
In Ontario, a BCIN Designer can be an architectural technologist, technician, or designer who obtained their BCIN (Building Code Identification Number) from the Ministry of Municipal Affairs and Housing. BCIN holders obtain their certification through studying the Ontario Building Code and passing the required examination. The BCIN designation reflects an individual’s knowledge and ability to interpret the Ontario Building Code and produce drawings for building permits. All registered BCIN holders are listed in the QuARTS public search registry. To search for your professional’s BCIN qualification, click here.
Services BCIN Designers offer:
Roles & Responsibilities:
Depending on the nature of your project, your team may require a few additional team members. Your Design Professional should be able to advise you on what services your project will need. Below is a non-exhaustive list of other consultants who may need to join your team: