A City of Ottawa addition permit takes 4 to 12 weeks depending on scope. Start the conversation now for a spring start.
Knoxdale-Merivale, College, Bay Older homes checked first Free written quotes

Home additions in Nepean, built for the lot you have

Home additions in Nepean typically run $325-$525 per sq ft for rear, side and second-storey additions, or $50,000-$150,000 for a single room, kitchen or garage. The permit takes 4 to 12 weeks to issue, and every quote starts with a free site visit to your Nepean property. Below: our recent dormer addition and covered entry in Nepean.
Setback and lot coverage confirmed for your property
Foundation founded to clear local frost depth
Egress-compliant design for every bedroom floor
Free written quote after a site visit

Get a quote for your Nepean property

Tell us what you're hoping to add and we'll check what your lot allows.

What can we help with?

So the right crew reviews your project.

Every quote is measured and priced on site.

What matters for an addition in Nepean

Lot size and setback room

A pre-amalgamation Nepean lot and a newer infill lot nearby can carry meaningfully different setback room, so we confirm your property's specific allowance before designing.

What kind of addition fits

Nepean is a large former city, amalgamated into Ottawa in 2001, now comprising much of the city's west and southwest end, with housing stock spanning many decades under wards like Knoxdale-Merivale, College and Bay.

Foundation and ground conditions

We confirm what the existing foundation can carry before tying in an addition or building up. New footings go below frost depth.

Finished dormer addition and covered rear entry with cedar posts, beams and steps on a home in Nepean, Ottawa
Dormer addition and covered entry

Recent Project in Nepean

This Nepean project added a dormer to the upper floor and a covered entry at the back of the house. The dormer is finished in shingle siding to match the house, and the new porch roof is built from cedar posts and beams with a tongue-and-groove ceiling, over French doors and new cedar steps with a railing. The photo shows the finished exterior.

Get a quote for your Nepean project

What Ottawa homeowners say

Reviews given to us directly by clients.

5/5

We hired them to add an extra bedroom and bathroom to our Ottawa home. The workmanship was excellent, and the team kept us informed throughout the entire project. We are very pleased with the finished space.

Nicole R.

Direct Client

5/5

Our new second-storey addition looks like it has always been part of the house. The builders paid close attention to every detail and kept the worksite clean and organized. I would gladly recommend them.

Melissa C.

Direct Client

Map of the Nepean area of Ottawa

Older and newer Nepean homes under one name

Nepean was a separate city before Ottawa’s 2001 amalgamation, and the housing stock across its former wards spans many decades of construction. A pre-amalgamation Nepean lot and a newer infill property nearby can carry very different practical setback room and foundation conditions, even though the same City of Ottawa Zoning By-law now applies to both. We confirm your specific property’s allowance rather than assuming from the general area.

What a Nepean quote should confirm

Your lot's actual rear-yard measurement

Housing age varies too much across Nepean to assume a setback figure. Ask for your property's specific number.

What the existing foundation can support

Older Nepean construction sometimes needs structural review before a second storey can be added. Ask what was checked.

Egress requirements for each new bedroom floor

Sized to Ontario Building Code Div. B 9.9.10, whatever the age of the home.

Whether a second storey or a rear addition costs less on your lot

Ask to see both options compared for your property before you choose.

25% Rear yard setback as a share of lot depth, most urban neighbourhood zones (minimum 6 m)
1.5 m Common local footing depth used to clear frost
4 to 12 weeks Typical time to get a City of Ottawa permit
0.35 sq m Minimum egress window opening on each bedroom floor

Nepean home addition questions

What does a home addition cost in Nepean?

Room-scale additions typically run $50,000-$150,000, and rear, side and second-storey additions $325-$525 per sq ft. Older Nepean homes sometimes need foundation or wall reinforcement before a second storey, which we price as its own line once we have seen the house.

Do you have recent projects in Nepean?

Yes. Our recent dormer addition and covered entry in Nepean is shown above, and when we visit we can walk you through other jobs that match your addition.

What addition types are common in Nepean?

We see a mix of room additions, second-storey builds and basement finishing across Nepean's many different subdivisions, which is consistent with the range of lot sizes and home ages in the area.

Get your Nepean property assessed

We'll check the lot, the zoning and the ground before quoting anything.

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