Ontario Design Studio prepares BCIN-certified permit drawings for secondary suites in Brampton. With some of the fastest household growth in Ontario, Brampton is one of the strongest markets in the GTA for additional residential units (ARUs) - basement apartments, garden suites, and above-garage units that add rental income and multi-generational space. We prepare the complete OBC-compliant drawing package and guide you through Brampton's permit and second-unit registration process.
Types of Secondary Suites in Brampton
- Basement secondary suites - legal second units below grade, the most common option
- Garden suites - self-contained detached buildings in the rear yard
- Above-garage suites - self-contained units over a detached garage
- Coach house and accessory-building conversions
Brampton Second-Unit Rules & Registration
Under Ontario's housing legislation, most Brampton lots can have up to three residential units as-of-right - for example, a main dwelling plus a basement suite and a garden suite. Parking requirements for second units have been reduced province-wide. Brampton also requires second units to be registered with the City, and a residential rental licence may apply in some areas. We design the drawings so the building permit and the registration requirements are satisfied together, keeping your unit fully legal and insurable.
Planning a secondary suite in Brampton?
Ontario Design Studio delivers BCIN-certified, OBC-compliant drawings across Brampton and Peel Region. Call 416-558-9607 or request your free quote - most packages are ready in 5–10 business days.
Ontario Building Code Requirements
Every legal secondary suite in Brampton must satisfy the same core OBC and Fire Code requirements:
- Ceiling height: minimum 1.95 m (6′5″) in habitable rooms - underpinning if the basement is too low
- Fire separation: a 45-minute fire-resistance rating between units
- Egress windows: an openable window of at least 0.35 m² in each bedroom
- Separate entrance: interior or a dedicated exterior entrance
- Independent ventilation and interconnected smoke & CO alarms
What's in Your Drawing Package
- Site plan with parking, setbacks, and (for garden suites) fire access
- Existing and proposed floor plans with dimensions
- Fire-separation details and a bedroom egress schedule
- Cross-sections, SB-12 energy compliance, and Schedule 1
- Zoning summary confirming conformity with the Brampton by-law
Secondary Suite Costs in Brampton
A basement secondary suite typically runs $2,000 to $4,000 in designer fees, while a detached garden suite - being a full dwelling - ranges from $4,000 to $8,000+. Municipal permit fees are additional. See our 2026 cost guide for a full breakdown.
Brampton Neighbourhoods We Serve
We prepare secondary suite drawings across Brampton, including Springdale, Bramalea, Heart Lake, Mount Pleasant, Fletcher's Meadow, Sandringham-Wellington, Castlemore, Credit Valley, and Downtown Brampton.
Related Services
- Secondary Suite Permits - Ontario-wide
- Garden Suite & Laneway House Permits
- Legal Basement Apartment Permits
- All Building Permit Services in Brampton
- Building Permit Drawing Cost Guide
Frequently Asked Questions
Can I build a secondary suite in Brampton?
Yes. Additional residential units are permitted as-of-right in most Brampton residential zones - up to three units on many lots, such as a main dwelling plus a basement suite and a garden suite. Each unit needs a building permit, OBC-compliant drawings, and registration with the City.
Do I need to register a second unit in Brampton?
Yes. Brampton requires second units to be registered with the City, and a residential rental licence may also apply in some areas. We prepare the drawings so the permit and registration requirements are satisfied together.
What types of secondary suites are allowed in Brampton?
Brampton permits basement (below-grade) secondary suites, detached garden suites in the rear yard, self-contained units above a detached garage, and coach house conversions, subject to zoning limits on size, height, and setbacks.
How much do secondary suite drawings cost in Brampton?
A basement secondary suite typically runs $2,000 to $4,000 in designer fees, while a detached garden suite - being a full dwelling - ranges from $4,000 to $8,000 or more. Municipal permit fees are additional. Contact us for a free quote.