Additional Dwelling Units

ADUs in Ottawa

Registered Ottawa architects designing additional dwelling units that add income and flexibility to your property.

Additional dwelling units in Ottawa

Provincial rules allow most Ottawa residential lots to add additional dwelling units — typically your principal home plus secondary and detached units. Whether you're converting a basement, adding on, or building a coach house, we design ADUs that fit Ottawa's zoning and your goals.

Ways to add an ADU

  • Secondary suites within the existing home
  • Additions that create a self-contained unit
  • Detached coach houses and garden suites
  • Multi-unit strategies that maximize your lot

Start with feasibility

Every lot is different — grading, services, parking, and tree protection all shape what's possible. As registered architects we begin with a clear feasibility review, then produce permit-ready drawings and coordinate approvals with the City of Ottawa. You get more livable space and lasting value, without the guesswork.

Serving Ottawa and the National Capital Region from our Ottawa studio.

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