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Home Addition

Home Addition in Calgary

When you love the street but need more house, we build additions that look original to the home, from foundations to the final coat of paint.

Book a Consultation or call 403-870-5776

4 to 7 months

typical time on site

Fixed scope

signed before work begins

One project lead

drawing to walkthrough

What is included

An addition is a small new building attached to your existing one. It needs foundations, framing, roofing tie-ins, and a seam you can never find from the street. NUMI manages the full scope including development permits, which in Calgary can shape what is possible on your lot.

Main floor and second-storey additions

Foundations, framing and roof tie-ins

Exterior matching so the addition looks original

Development and building permits managed

Structural engineering coordinated

Interior finishing to match the existing home

Kitchens and bathrooms within the new space

Landscaping repair after construction

Planning your project

We give you an honest range at your consultation and a fixed number after design. These are the factors that move it, and how long the work takes.

Foundation type

Crawlspace, full basement or piles under the new space drive early costs.

Second storey vs out

Building up avoids lot coverage limits but adds structural work below.

Roofline complexity

Tying new roof into old cleanly is craftsmanship that pays off every day after.

Permit constraints

Setbacks and lot coverage rules shape what can be built. We assess this first.

How long it takes

Additions typically run four to seven months including permits. The permit phase in Calgary can take six to twelve weeks before construction starts.

The NUMI Method. Listen, Design, Build, Stand Behind. Four stages, in order, every time, with a single project lead throughout.

Common questions

Will the addition match our house?

That is the test we hold ourselves to. Rooflines, siding, windows and interior trim are matched so the seam disappears.

What permits does an addition need?

Development and building permits, plus trade permits. We manage the full application including drawings.

Can we stay in the home during construction?

Usually yes. The addition is built enclosed before we open the wall between old and new.

Is our lot even eligible?

Setbacks and coverage rules vary by neighbourhood. We assess feasibility before you spend money on design.

Renovated Calgary home interior in daylight

Ready to talk about your home addition?

Tell us about your project and we will set up a consultation, in your home, at your pace.

Book a Consultation

What is included

Planning your project

How long it takes

Common questions

Related renovations

Ready to talk about your home addition?