How much does it cost to add stucco to a second-storey addition during a renovation in Ottawa?

Adding stucco to a second-storey addition during a renovation is a smart time to get the work done, because the scaffolding and site access that come with an active renovation can significantly reduce your overall costs compared to doing it as a standalone project later.

What Drives the Cost of Second-Storey Stucco in Ottawa

The material system you choose is the biggest single cost variable. Traditional three-coat Portland cement stucco runs $8 to $14 per square foot installed in Ottawa, while acrylic stucco — which is often a better choice for new additions because of its superior flexibility and crack resistance in our freeze-thaw climate — runs $10 to $16 per square foot. If you're interested in the thermal performance benefits of EIFS, expect $12 to $22 per square foot, which is worth considering seriously on a second-storey addition where insulation continuity on the upper floor can meaningfully improve your home's energy performance.

For a typical second-storey addition with, say, 400 to 800 square feet of new wall area, rough cost estimates look like this. Traditional three-coat stucco on that area would run approximately $3,200 to $11,200. Acrylic stucco would be $4,000 to $12,800. EIFS would be $4,800 to $17,600. These are ranges, not quotes — your actual number will depend on substrate condition, wall complexity, window and door openings, and corner detailing.

One important cost consideration specific to second-storey work is scaffold access. On a standalone stucco job, scaffold rental and setup can add $1,500 to $4,000 or more to the project cost. If your renovation already has scaffolding in place, your stucco contractor may be able to work within that setup, which is a real saving. Coordinate with your general contractor early so the stucco work can be scheduled while access equipment is already on site.

Matching the new stucco to your existing first-floor finish is a detail that catches many homeowners off guard. If your home already has traditional cement stucco on the main floor, matching the texture, aggregate size, and colour on the addition takes skill and sometimes multiple sample applications. This is not a place to cut corners — a visible mismatch between floors will stand out for the life of the building.

From a permit standpoint, your addition almost certainly already has a building permit, and the stucco work will fall under that permit's scope as part of the exterior envelope. If you're adding EIFS to a home that didn't previously have it, confirm with your contractor that the wall assembly change is captured in the permit drawings. If your home is in one of Ottawa's heritage conservation districts — Centretown, Sandy Hill, New Edinburgh, Rockcliffe Park, and others — exterior finish changes may require heritage approval even as part of a permitted renovation.

Timing matters in Ottawa's short stucco season. If your addition is being framed in spring or early summer, you're in good shape to have stucco applied and properly cured before fall. If framing is running into September or October, talk to your contractor about realistic curing windows — stucco needs sustained temperatures above 5 degrees Celsius for at least 48 to 72 hours after each coat, and Ottawa's fall weather can be unpredictable.

For next steps, get your stucco contractor involved in the conversation early — ideally before framing is complete — so they can advise on the weather-resistive barrier, lath specification, and sequencing with other trades. You can browse stucco contractors serving Ottawa through the Ottawa Construction Network directory at justynrookcontracting.com, which is a free resource to find and contact local professionals directly.