One of the first questions homeowners ask when planning a new house or addition is simple: who is actually allowed to design it? The answer depends on the scope of your project, and understanding your options early can save time, money, and headaches later.
Your Design Options for a Single Family Dwelling
Whether you're building new construction or adding onto an existing house, you have several qualified professionals to choose from:
BCIN Designer (with the "House" qualification)
A BCIN Designer holding the House qualification can design the architectural and structural portions of a house. For many straightforward projects, this is a cost-effective and well-suited option.
Architect
An architect can design all of the architectural aspects of a house and some of the structural components. However, once the structural design becomes sufficiently complex, it may fall outside the architect's scope, and an engineer will need to be brought in.
Professional Engineer (P.Eng)
An engineer can design every aspect of a house. Certain elements, however, can only be designed by an engineer, including:
Underpinning
Shoring
Any structural components that fall outside the scope of Part 9 of the Ontario Building Code
Homeowner (Schedule 1)
Homeowners can also take on design responsibility by signing a Schedule 1 form. Keep in mind that the limitations are similar to those of a BCIN Designer, so a homeowner-led design is best suited to simpler projects.
Why Many Custom Homes Involve Both a Designer and an Engineer
From a pure design standpoint, a BCIN Designer can handle an entire house. In practice, though, custom home projects very often involve both a BCIN Designer and an engineer.
The engineer's role frequently comes into play during construction. Engineer sign-offs are required at key stages, and they can also be requested by the City's inspector. For example, during footing or foundation inspections, an inspector may ask an engineer to confirm in writing that rebar has been installed according to the drawings. Once the engineer's letter is received, the City can rely on that professional's review, and the inspection can be passed.
Choosing the Right Professional for Your Project
The right choice depends on your project's complexity, your budget, and your timeline. A simple addition may only need a BCIN Designer, while a custom home with significant structural elements will likely benefit from a coordinated team.
Not sure which path is right for your project? Contact Stelos and we'll help you understand your options before you commit to a design team.
