ACCESORY DWELLING UNITS (ADUs)
Additional Space, Long-Term Value
An Accessory Dwelling Unit (ADU) can add flexibility, livable space, and lasting value to an existing property.
Whether intended for extended family, rental income, or future adaptability, these projects benefit from the same level of planning and construction discipline as any residential build. Our approach is to design ADUs that feel integrated with the property — not secondary or temporary.
Designed to Feel Part of the Property
Although typically smaller in scale, ADUs require the same level of consideration as larger residential work. Zoning review, servicing, layout efficiency, and site placement all influence how successfully the new space functions over time.
We approach these projects with a focus on clarity of design, durable construction, and integration with the primary residence so the result feels intentional and permanent.
Our team coordinates feasibility, design, permitting, and construction as a single process, ensuring decisions made early carry through to a well-executed build.
Key Considerations
Before moving forward with an ADU, it’s important to understand how the project fits within the broader property context.
Typical considerations include:
- Municipal zoning and setback requirements
- Servicing capacity (water, sewer, electrical)
- Site access and grading
- Privacy and relationship to neighbouring properties
- Long-term use and flexibility
Addressing these elements early allows the project to proceed with clarity and reduces surprises during permitting and construction.
DESIGNED TO FEEL INTENTIONAL. BUILT TO ENDURE.
We believe a well-executed ADU should feel as though it belongs on the property — not something inserted as an afterthought.
That means disciplined design decisions, restrained material palettes, and construction methods that prioritize durability over shortcuts. The same level of care we apply to custom homes informs every secondary dwelling we undertake.
Our goal is to create compact, efficient space that improves daily life while integrating seamlessly with the original home and site.
Client Experience
Ecnomus was transparent, pragmatic, and deeply invested in the success of our project. The quality of the work is evident, but what stood out most was Andrew’s honesty and commitment throughout the process.
— A. Bunker
After working with several builders over the years, Ecnomus outshone them all. The process was organized, fully transparent, and far less stressful than we expected — even finishing ahead of schedule.
— M. Sehl
Andrew, Craig, and the entire team treated our home as if it were their own. Communication was clear, craftsmanship was excellent, and the attention to detail never wavered from start to finish.
— M. Hagey
Proud Members of:
Where We Work
Our work is based in Waterloo Region — including Kitchener, Waterloo, and Cambridge — and extends across:
- Guelph and Wellington County
- Halton Region (Milton, Georgetown, Halton Hills, Oakville)
- Hamilton Area (Ancaster, Dundas, Waterdown, Burlington, Hamilton)
We also take on select ADU projects in Caledon, Belfountain, Perth County, and Wilmot Township, and surrounding communities.
Considering an ADU?
If you are exploring the addition of a secondary dwelling on your property, we’re happy to discuss feasibility and whether the project is a good fit.
Begin the Conversation
The most successful ADU projects begin well before construction starts. Early collaboration allows us to evaluate feasibility, align scope and budget, and establish a clear design from the outset.
Tell us a bit about what you’re considering — we’ll let you know if we’re the right fit.