“Change begins at home,” and the City of St. Catharines is proving just that by introducing pre-approved designs for detached Accessory Dwelling Units (ADUs). This initiative, part of the City’s Housing Accelerator Fund, is designed to expand housing choices and support homeowners with innovative, cost-effective solutions.

What are Accessory Dwelling Units (ADUs)?

ADUs, also known as secondary suites or garden suites, are self-contained homes located on the same lot as a main residence. They can be detached, like a small house in the backyard, or integrated into the primary home. ADUs provide flexible options for rental income, accommodating family needs, or creating accessible spaces for aging in place.

Benefits of Pre-Approved ADU Designs

Embracing pre-approved ADU plans comes with a plethora of benefits:

• Faster Approvals: Skip lengthy review processes as these designs have already met the code requirements.
• Cost-Effective: Save on design fees and engineering costs, making your project more affordable.
• Quality & Efficiency: Each design adheres to Ontario Building Code standards while incorporating sustainable construction features.

“A smart investment in home expansion,” these benefits ensure a streamlined process for every homeowner.

Explore the Available Pre-Approved Designs

A wide selection of high-quality ADU designs is now available, each tailored to suit different styles, space requirements, and budgets:

The Axe One Bedroom

• Size: 500 sq. ft.
• Features: Spacious and energy-efficient design with exposed timber ceilings, high-performance HVAC, luxury finishes, and clever storage. Customisation options allow a seamless blend with your existing home. Starting at $140,000 (excluding foundation and site servicing), installation can be completed in as little as two months.
• Highlights: Prioritises privacy and sustainability, with extra accessible features available upon request.

The Axe Two Bedroom

• Size: 770 sq. ft.
• Features: Similar advantages as the one-bedroom model, with additional space to accommodate families or guests, stylish high-end finishes, and design flexibility. Priced from $175,000 (excluding foundation/site servicing).

OCI Large Model

• Size: 80 m²
• Features: A contemporary two-bedroom design featuring an open-concept living, dining, and kitchen area, 1.5 bathrooms, a sloped roof ideal for future solar panels, and a large porch. Fully electric with an efficient heat pump system. Estimated cost is $225,000.

OCI Small Model

• Size: 50 m²
• Features: Compact and modern design suitable for singles or couples. Includes a full bath and powder room, with high ceilings and large windows ensuring an open atmosphere. Designed to be fossil-fuel-free, with an estimated cost of $160,000.

Backyard Homes Beech Model

• Size: 37 m²
• Features: A one-floor, one-bedroom, one-bathroom home constructed onsite. Prioritises energy efficiency and privacy, ideal for extra living space, rental income, or multigenerational living. Offered at $129,999 + HST.

Backyard Homes Maple Model

• Size: 54 m²
• Features: A larger two-bedroom, one-bathroom design built with similar emphasis on privacy and sustainability. An excellent option for growing families or those seeking versatile space. Priced at $189,999 + HST.

Financial Incentives

To promote the construction of ADUs, St. Catharines offers generous financial support through the Community Improvement Plan ADU Program:

• Grants: Eligible projects can obtain up to $40,000 for interior units and up to $80,000 for exterior units.
• Cost Offset: These grants help significantly reduce construction expenses, making the investment even more appealing.

What Homeowners Need to Know

• Zoning Review Is Essential: Each property must be evaluated for zoning compliance, including setbacks, lot size, and parking.
• Custom Adjustments: While the designs are pre-approved, any site-specific modifications may require additional review and design alterations.
• Professional Guidance: Engaging a designer, planner, or contractor is recommended to ensure all regulations are met.
• Building Permits: A building permit is mandatory for every ADU project, regardless of pre-approval status.

Frequently Asked Questions

What is an ADU?
An ADU is a self-contained residential space located on the same lot as a main dwelling. It can be detached or integrated, making it a versatile option for housing family members or renters.

Where can I build a detached ADU?
Detached ADUs are permitted in most residential zones across St. Catharines, provided that property-specific zoning requirements are met.

Do I need a permit?
Yes. A building permit is required for all ADU construction projects to ensure compliance with the Ontario Building Code and local regulations.

Does pre-approval guarantee zoning compliance?
No. While the designs are code-compliant, property-specific factors like setbacks, lot coverage, and parking must still be independently verified.

Are parking spaces required?
Typically, one parking space is mandated per ADU, though this may vary based on the number of dwellings and local bylaws.

Can I customise a pre-approved design?
Yes, with limitations. Any modifications must continue to meet all relevant building codes and zoning by-laws.

Are financial incentives available?
Yes. Generous grants are offered through the City’s ADU incentive program, subject to eligibility and funding availability.

Can an ADU be used for short-term rentals?
ADUs can serve as short-term rentals if they are also designated as a primary residence and comply with licensing requirements.

How long do permits take?
While pre-approved designs can expedite the process, permit timelines will vary depending on the complexity of the project and application volume.

Bringing It All Together

With these innovative, pre-approved ADU designs, St. Catharines is making it easier, faster, and more cost-effective for homeowners to expand their living spaces. Whether your goal is to accommodate family, generate rental income, or create an accessible home, there is a design that suits your needs. Embrace this exciting opportunity and take a confident step towards enhancing your property and community.