Here’s the part most career guides skip: in Ontario, “Interior Designer” is a legally protected title. Under the ARIDO Act of 1984, amended by Bill Pr6 in 1999, it’s against the law to call yourself one without Registered membership in ARIDO, the Association of Registered Interior Designers of Ontario.
So how to become an interior designer, legally, in this province? The verified path has four steps: earn a CIDA-accredited degree (four years), join ARIDO as an Intern member, log 3,520 hours of supervised work experience, and pass the NCIDQ exam. Then, and only then, can you register and use the title. Here’s how each step works, with the Toronto specifics.
Step 1: Get a CIDA-accredited degree
Accreditation matters more than the school’s name. ARIDO’s Registered pathway starts with a degree accredited by CIDA, the Council for Interior Design Accreditation, and five programs in or near the GTA currently hold it (CIDA, accredited program list, 2026). Check the dates before you apply, because accreditation runs in cycles.
| School | Program | Length | CIDA status |
|---|---|---|---|
| TMU, School of Interior Design | BFA Interior Design (called Bachelor of Interior Design before Fall 2023) | 4 years, optional 5-year co-op | Accredited 2024–2030 |
| Humber Polytechnic | Bachelor of Interior Design | 4 years | Accredited 2024–2030 |
| Sheridan, Oakville | Honours Bachelor of Interior Design | 4 years | Accredited 2023–2029 |
| OCAD U | BDes Environmental Design, Interior Design Specialization | 4 years | Accredited 2024–2030; meets NCIDQ eligibility |
| Yorkville University, Concord | Bachelor of Interior Design, including online | 4 years | Accredited 2023–2029 |
One honest caveat. George Brown College offers both an Honours Bachelor of Interior Design (T320) and a three-year advanced diploma (T178), and neither is currently CIDA-accredited. The college is pursuing recognition with a stated goal of 2027. If you enrol there now, you’re betting on that timeline, so go in with eyes open.
Step 2: What’s the difference between a designer and a decorator?
In Ontario, the difference is the law. “Interior Designer” has been a protected title since the ARIDO Act of 1984, strengthened by Bill Pr6 in 1999 (ARIDO). “Interior decorator,” by contrast, is unprotected. Anyone can print it on a business card tomorrow, no degree, no exam, no hours.
That’s not a knock on decorators. Plenty of talented people work under that title. But the protected designation exists because the Registered pathway certifies a specific, verifiable level of training. To get there, ARIDO requires three things:
- A CIDA-accredited degree, or the Intern Competencies Review System for those whose education doesn’t fit the standard mould.
- Supervised work experience completed as an ARIDO Intern member.
- A pass on the NCIDQ exam. ARIDO is also developing a Canadian Examination Alternative, though the NCIDQ remains the established route.
Why does this matter to clients? When a firm lists Registered designers, that credential traces back to this exact pathway. It’s one of the things we weigh when covering Toronto’s design studios.
Step 3: How do the NCIDQ exam and the 3,520 hours work?
The NCIDQ is administered by CIDQ, the Council for Interior Design Qualification, and with a bachelor’s degree you need 3,520 hours of qualified, supervised experience to sit it (CIDQ). That’s roughly two years of full-time work. The useful catch: up to half of those hours can be earned while you’re still a student.
The exam itself comes in three sections:
- IDFX (Fundamentals): typically the first section, open to recent graduates.
- IDPX (Professional): the deeper professional-practice section.
- Practicum: the applied section, which is being replaced by a new format called IDIX (Implementation) from April 2026. If you’re starting your hours now, IDIX is the version you’ll likely face.
Add it up and the realistic timeline from first-year studio to Registered member is about six years: four for the degree, then roughly two of supervised practice, less if you banked student hours along the way. Anyone promising a faster route to the protected title is selling something.
What does an interior designer earn in Canada?
The median wage for interior designers and decorators in the Toronto region is $29.53 per hour, which works out to roughly $61,400 a year at full-time hours (Job Bank Canada, NOC 52121, 2024 data; annual figure is approximate). Here’s how the interior designer salary picture compares across regions.
| Region | Low | Median | High | Period |
|---|---|---|---|---|
| Canada | $18.35/hr | $28.85/hr | $48.72/hr | 2023–24 |
| Ontario | $17.60/hr | $27.40/hr | $50.00/hr | 2023–24 |
| Toronto region | $18.86/hr | $29.53/hr | $45.65/hr | 2024 |
Two things worth noting. First, NOC 52121 groups designers and decorators together, so the low end reflects unregulated entry-level work, not the Registered career track. Second, the spread between low and high is wide, nearly $27 an hour in the Toronto numbers. Credentials, specialization, and the strength of your portfolio are what move you up that range.
Honest advice on first jobs and your portfolio
Your first interior design jobs out of school will probably not be glamorous, and that’s fine, because the supervised-hours requirement makes early studio work the whole point. Every drawing set, site visit, and finish schedule you touch as an ARIDO Intern counts toward your 3,520 hours. Choose your first employer for mentorship and breadth of work, not the name on the door.
Your portfolio is the other long game. Document everything you’re allowed to share, learn to explain your decisions as clearly as you draw them, and study how established studios present their projects. Spend an hour with the portfolios of the firms in our guide to the best interior designers in Toronto and you’ll notice they sell process and thinking, not just pretty after-shots. That’s the standard you’re working toward.
Frequently asked questions
How long does it take to become an interior designer in Canada?
Plan for about six years in Ontario: a four-year CIDA-accredited degree, then roughly 3,520 hours of supervised experience, about two years full-time, before passing the NCIDQ exam (ARIDO; CIDQ). Up to half of those hours can be earned as a student, which can shorten the post-graduation stretch.
Do you need a degree to be an interior designer in Ontario?
To legally use the title “Interior Designer,” yes, in practice. ARIDO’s Registered pathway requires a CIDA-accredited degree or its Intern Competencies Review System alternative, plus supervised hours and the NCIDQ exam (ARIDO). You can work in design-adjacent roles without one, but the protected title stays out of reach.
How much do interior designers make in Toronto?
The median wage in the Toronto region is $29.53 per hour, roughly $61,400 a year at full-time hours, with the range running from $18.86 to $45.65 per hour (Job Bank Canada, NOC 52121, 2024). The annual figure is approximate, and experience and credentials push earnings toward the high end.
What is the difference between an interior designer and an interior decorator?
In Ontario, “Interior Designer” is a protected title under the ARIDO Act of 1984, amended in 1999, requiring an accredited degree, supervised hours, and the NCIDQ exam (ARIDO). “Interior decorator” is not regulated, so anyone can use it without formal training or examination.
What is the NCIDQ?
The NCIDQ is the professional licensing exam for interior designers, administered by CIDQ. It has three sections, IDFX, IDPX, and a practicum that is being replaced by IDIX from April 2026 (CIDQ). With a bachelor’s degree, candidates need 3,520 hours of qualified experience to complete it.
