What is the cost to apply decorative stucco finishes like Venetian plaster in Ottawa?

Decorative stucco finishes like Venetian plaster are premium applications, and in Ottawa you can expect to pay $8 to $22 per square foot for interior Venetian plaster, and $14 to $28 per square foot for exterior decorative stucco finishes. For a single feature wall (roughly 100–150 sq ft), that's $800 to $3,300 interior or $1,400 to $4,200 exterior. A full room or large exterior area will run significantly more.

Decorative finish options and their price ranges

The term "decorative stucco" covers a wide range of finishes, each with different material costs, skill requirements, and labour intensity:

• Venetian plaster (interior): $8–$22/sq ft. Multiple thin layers of lime-based plaster burnished to a polished, marble-like finish. The higher end gets you deeper colour layering, more burnishing passes, and a richer depth of finish. This is the most labour-intensive decorative option — a skilled applicator might cover only 100–150 sq ft per day.- Marmorino (interior/exterior): $12–$20/sq ft. Similar to Venetian plaster but with marble dust aggregate, giving it a slightly more textured feel. It can be used outdoors in protected areas.- Exterior decorative textures (Santa Barbara, skip-trowel, lace, Spanish): $10–$16/sq ft over properly prepared substrate. These are more accessible price-wise because they're faster to apply than polished finishes.- Tadelakt (waterproof Moroccan lime plaster): $18–$28/sq ft. Excellent for bathrooms and wet areas. Extremely specialized — only a handful of applicators in the Ottawa region do this well.- Textured acrylic finishes: $6–$12/sq ft. The most affordable decorative option, using pre-mixed acrylic products that can mimic natural stucco textures.

Material costs for quality decorative plasters are substantial — genuine Italian lime putty products like Grassello di Calce run $60–$120 per pail, and you'll go through several pails even on a modest project. Cheaper synthetic alternatives exist at $30–$50 per pail but don't achieve the same depth and luminosity.

For Ottawa specifically, exterior decorative finishes need to withstand our –30°C winters and significant freeze-thaw cycling. Not every decorative product is rated for Ottawa's climate — make sure your contractor specifies exterior-grade materials with documented freeze-thaw resistance. Interior applications have no such restrictions.

The biggest cost driver in decorative work is applicator skill. Venetian plaster and similar finishes are genuinely artisanal — the difference between a mediocre and exceptional result is entirely in the craftsperson's hands. Ask to see completed projects in person (not just photos), and expect to pay more for an applicator with a strong portfolio. This is one area where choosing the lowest bid almost always leads to disappointing results.

---

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

• Justyn Rook Contracting
• RenoMotion Inc.
• Valcor Construction
• Dreamwood Construction & Renovations
• The Granite shop

View all contractors →