/ About Secondary Units
At Secondary Units, our mission is to provide homeowners, real estate investors, and property developers in Ontario with affordable and sustainable Accessory Dwelling Units (ADUs).
We believe in creating versatile living spaces that enhance property value and contribute to building greener, more efficient communities.
Our comprehensive service—from design and permits to construction and occupancy verification—ensures our clients a seamless, stress-free experience.
Secondary Units was founded to make high-quality ADUs accessible to everyone.
As experts in the design and construction of secondary residential units, we specialize in turning your property’s potential into reality.
Our team comprises seasoned professionals with extensive experience in architecture, construction, and project management, all united by a passion for delivering exceptional results.
/ Our Expertise
/ Our Team
Project Manager & General Contracting
Asset Manager
Procurement
/ FAQs
An Accessory Dwelling Unit (ADU) is a secondary housing unit on a single-family residential lot. It can be a detached structure, a converted space within the primary home, or an addition to the existing structure. ADUs offer flexible living arrangements, additional rental income, and increased property value.
Thanks to our preferred construction technology, the Lodestar superstructure, we can build your ADU in less than a month. This innovative approach allows for faster construction times without compromising on quality or durability.
We specialize in a variety of ADU types, including:
Each type can be customized to suit your specific needs, whether you're looking to add rental income, create space for family, or simply increase your property value.
The cost of building an ADU can vary depending on the size, design, and specific requirements of your project.
Generally speaking it can range from $280-$380 sq/ft which is significantly less than the usual $500 or more a sq/ft the way labour and materials costs are after the pandemic
We focus on providing affordable solutions, using cost-effective materials and efficient construction methods. Contact us for a detailed quote tailored to your needs.
Choosing Secondary Units means partnering with experts who are committed to affordability, sustainability, and quality. Our use of the Lodestar superstructure technology allows us to build quickly and efficiently, delivering high-quality ADUs that enhance your property. Plus, we manage the entire process, so you can enjoy a hassle-free experience from start to finish.
Yes, building an ADU requires permits and must comply with local zoning laws and building codes. At Secondary Units, we handle the entire permitting process for you, ensuring that all legal requirements are met and that your project progresses smoothly.
Absolutely! We prioritize sustainability in every project. By using the latest in green building practices and materials, including the Lodestar superstructure, we ensure that your ADU is energy-efficient and environmentally responsible.
Yes, there are several financing options available for building an ADU, including home equity loans, construction loans, and grants. We can guide you through the financing process to help make your ADU project as affordable as possible.
Getting started is easy! Simply contact us to schedule a consultation. We'll discuss your vision, assess your property, and begin the planning and design process. From there, we handle everything from permits to construction and final occupanc
/ Quotation
Secondary Units specializes in the design, permit, and construction of Accessory Dwelling Units (ADUs) in Ontario. From concept to occupancy… we handle everything.
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