What is the price range for a 200-square-foot bump-out in Ottawa?

A 200-square-foot bump-out is a meaningful extension, enough for an enlarged kitchen, a bigger family room or a new dining area. As broad perspective only, a project of this size can range from roughly $50,000 to $120,000, depending on foundation type, structural work, mechanical changes and finishes. Treat that as perspective, not a quote.

The foundation is the first major decision. At this size you will almost certainly need a foundation rather than a cantilever. On clay or poorly defined soils, the Building Code calls for footings at least 1.2 m deep and not less than the depth of frost penetration, and on sensitive clay footing sizes must be engineered. Options include a poured frost wall or engineered piles with a beam. Piles can help where excavation access is tight. Your engineer will confirm what suits your lot.

Structural framing includes the critical connection to the house. Where part of the existing exterior wall is removed, a header beam carries the load above the opening. Depending on the span it may be engineered lumber or steel, and a structural engineer must size it.

Roofing varies with design. A simple shed roof sloping away from the house is the most economical. A gable or hip roof that matches your existing architecture looks better but costs more. Flashing where the new roof meets the existing wall is critical to keeping water out.

Mechanical work is fairly contained at this size. Ductwork can often be extended if a heat-loss calculation shows your furnace has capacity. Electrical work needs an ESA notification and is done by an ESA-licensed electrical contractor. A kitchen expansion adds plumbing, so the distance fixtures move matters.

Interior finishes are where your choices most affect the total, from basic drywall and laminate to hardwood, custom trim and pot lights.

On permits, the City requires a building permit for an addition, and fees are $12.75 per $1,000 of construction value (minimum $117), so an $80,000 valuation would be about $1,020. Your zoning sets maximum height, lot coverage and setbacks, so check your property's zone before committing to a design. Ask the City for current approval timelines, and ask contractors for a construction schedule.

Ask each contractor to break the quote into foundation, framing, roof, mechanical and finishes so you can compare line by line. You can browse addition contractors in the Ottawa Construction Network directory at justynrookcontracting.com and compare itemized quotes.

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Looking for experienced contractors? The Ottawa Construction Network connects homeowners with qualified professionals:

• 613Bins
• JC Carpentry
• Nic’s D.U.C.T Works Inc
• Renovo Construction
• Joe Imerti Contracting