Permit handled for you Egress designed in from day one Free written quotes

Bedroom additions with code-sized egress windows from day one

A bedroom addition in Ottawa typically runs $325-$475 per sq ft, or $50,000-$100,000 with an ensuite. The permit takes 4 to 12 weeks to issue, and the egress window is sized to the Ontario Building Code from the first drawing.

Egress window sized to Ontario Building Code Div. B 9.9.10

Rear-yard setback confirmed before design

Foundation founded to clear local frost depth

Written quote itemised by scope

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Tell us the space you have and what you're hoping to add.

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Service

So the right crew reviews your project.

Every quote is site specific.

What makes a bedroom addition different from any other room

The Ontario Building Code treats a bedroom specifically, and it changes the design.

Egress is not optional

Each floor level with a bedroom needs at least one window with an unobstructed opening of at least 0.35 sq m, no dimension under 380 mm and a sill no higher than 1,000 mm above the floor, unless a door on that level leads directly outside.

It still has to fit the setback

A bedroom addition is subject to the same rear yard setback as any other addition: 25 percent of lot depth in most urban neighbourhood zones, never less than 6 m.

Electrical and closet requirements

A room counted as a bedroom typically needs its own closet and a minimum floor area under the applicable code, which we design to rather than guessing.

Bedroom addition framed with a row of new windows and a patio door

Why the window comes before the wallpaper

An egress window is a common reason a bedroom addition fails inspection on the first pass. The Ontario Building Code sets the opening size, the minimum dimension, and the maximum sill height precisely, and there is no discretion in the number once the room is being used as a bedroom. We size the window into the design from the earliest drawings, not as a retrofit once the framing is up, which is the point at which fixing an undersized opening becomes expensive.

Bedroom addition prices in Ottawa

For a ground-floor bedroom addition.

Ground-floor bedroom addition

$325-$475 per sq ft

Code-sized egress window included in the design
Foundation founded to clear local frost depth
Matched exterior finish and roofline
Priced per square foot

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Bedroom with ensuite

$50,000-$100,000 full project

Bedroom plus a new bathroom, priced as a combined project
Plumbing rough-in included
Same egress and setback requirements apply
Itemised quote after a site visit

Ask about an ensuite

Room addition framed with roof rafters, glass doors and a tall window unit installed in Metcalfe, Ottawa

Room addition with glass doors

Recent Project in Metcalfe

This Metcalfe addition was planned around natural light. The new room is framed with the roof rafters in place, and a set of glass doors and a tall window unit are already installed and taped in the front wall.

See more about our Metcalfe work

Our Process

How we run a bedroom addition project

1

Confirm setback and footprint

We measure your lot and confirm the addition fits the rear-yard setback before designing the room.

2

Design with egress built in

The bedroom's window is sized to code from the first drawing, not added afterward.

3

Permit and foundation

Permit application submitted, then footings excavated to clear local frost depth.

4

Build and finish

Framing, exterior finish, and interior completion, inspected at each stage.

What Ottawa homeowners say

Reviews given to us directly by clients.

Home Additions Experts Ottawa built a beautiful family-room addition for our home. The team communicated clearly, stayed organized, and made sure the new space blended perfectly with the original house.

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.

The team managed our home addition professionally from the initial planning stage through construction. They answered our questions, respected our property, and delivered a result that exceeded our expectations.

What to check on a bedroom addition quote

The exact egress window dimensions

Ask for the specific opening size and sill height on the drawings, not a statement that it 'meets code.' The Ontario Building Code sets precise minimums with no discretion.

Whether a closet is included

Most applicable codes expect a closet and a minimum floor area for a room to count as a bedroom. Ask if that's built into the design or left as a future add-on.

How the addition fits the rear-yard setback

Ask to see your lot's specific setback measurement, not a general 'it should fit' answer.

Whether plumbing is included if you want an ensuite

A bedroom with a bathroom is usually a different pricing tier than a bedroom alone. Confirm which one you're being quoted.

4 to 12 weeks Typical time to get a City of Ottawa permit

Free Site visit and zoning check before any price

380 mm Minimum dimension allowed for any side of the egress opening

1,000 mm Maximum sill height above the floor for an above-grade bedroom window

Bedroom Addition questions

What size does the bedroom window need to be?

The Ontario Building Code requires a minimum unobstructed opening of 0.35 sq m, with no single dimension under 380 mm, and a maximum sill height of 1,000 mm above the floor.

Can a bedroom addition go in the basement instead?

Yes, but a basement bedroom has no fixed maximum sill height requirement since a window well handles the drop, and that well needs at least 550 mm of clearance in front of the open sash. See our basement addition page for that scope specifically.

Do I need a closet for the room to count as a bedroom?

Generally yes, most applicable codes require a closet and a minimum floor area for a room to be classified as a bedroom. We design to that from the start.

How much does a bedroom addition with a bathroom cost?

A bedroom with an ensuite is priced as a combined full-project total rather than a per-square-foot rate, because the plumbing scope changes the math.