One team for design, permits, and construction

Second Dwelling Unit Ottawa was built around a simple idea: homeowners adding a secondary dwelling unit shouldn’t have to coordinate a designer, a permit consultant, and a contractor separately.

Get your free quote

Tell us about your project and we will get back to you within 24 hours.

What can we help with?

So the right crew reviews your project.

Written quote within 2 business days. No obligation.

Why we exist

One team, so the gaps don't become your problem

Building an ADU in Ottawa usually means hiring a designer, a permit consultant, and a contractor separately – and every handoff between them becomes the homeowner’s problem. We design, permit, and build under one team instead.

How we're structured

Three things that come from working as one team instead of three separate parties.

One team, one contract

The same team designs, files the permit, and builds – so a construction detail gets resolved with the person who drew it, not a dispute between two firms.

We say so when we don't know

No blanket price or warranty promises before we've seen your property – what applies to your job is set out in your written quote.

Building our track record in public

As a newer company, that means direct access to the people actually doing the design and the build, without layers of account managers.

Where we work

We work out of an office on Hamilton Avenue North in Ottawa and serve homeowners across the city, from Kanata and Barrhaven to Orleans and Manotick – see our full list of service areas for local zoning notes. The office is staffed by appointment, since our team is usually out on site. You can also reach us by email at info@seconddwellingunitottawa.ca.

About us

Do you only build detached units, or basement conversions too?

Both. We design, permit, and build all four Additional Dwelling Unit types the City of Ottawa recognizes: garden suites, coach houses, laneway suites, and basement apartment conversions.

Do you work across all of Ottawa, or specific neighbourhoods only?

We work across the city. Zoning and lot conditions vary by property, not by neighbourhood name, so every project starts with a feasibility review specific to your address.

Talk to us about your property

Tell us about your lot and what you're trying to achieve, and we will tell you what's realistic.

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