How much does it cost to add decorative stucco mouldings and trim around an Ottawa home?

Decorative stucco mouldings and trim—also called stucco reveals, bands, quoins, and keystones—can dramatically elevate your home's curb appeal. In Ottawa, this type of architectural detail work is popular on both new builds and renovation projects, especially in established neighbourhoods where homes have a more traditional aesthetic.

Cost Ranges for Decorative Stucco Elements

Pricing depends on the type and complexity of the moulding, but here are typical Ottawa ranges:

Window and door surrounds:

• Simple flat trim bands (2–4" wide): $150–$300 per opening- Profiled mouldings with a shaped cross-section: $300–$600 per opening- Elaborate surrounds with keystones and sill details: $500–$1,000+ per opening

Horizontal elements:

• Belly bands / string courses (running horizontal trim): $15–$30 per linear foot- Cornice mouldings at the roofline: $25–$50 per linear foot- Water table trim at the base: $12–$20 per linear foot

Corner and accent elements:

• Quoin blocks (alternating corner stones): $80–$150 per quoin, typically 8–12 per corner- Keystones above windows: $100–$250 each- Medallions or custom decorative panels: $300–$800+ each

Full-house decorative package: For a typical two-storey Ottawa home with trim around 12–15 windows, a front door surround, corner quoins, and a belly band, you're looking at $5,000–$15,000 for the decorative elements alone (on top of the base stucco application cost).

Two main approaches and their cost impact:

Site-built stucco mouldings: The traditional method where a mason shapes moulding profiles on-site using stucco over a shaped foam or wood core. This is labour-intensive—$50–$75/hour for a skilled mason—but allows fully custom profiles and seamless integration with the stucco surface. Best for heritage-style homes in areas like Rockcliffe, the Glebe, or Westboro.

Pre-fabricated EPS foam mouldings: Expanded polystyrene profiles factory-cut to shape, then coated with a thin polymer-modified stucco finish. These cost 30–40% less than site-built and install much faster. The finished look is excellent, and modern coatings are durable enough for Ottawa's climate. This is the more popular choice for new construction in Barrhaven, Kanata, and Orléans.

A few practical notes for Ottawa specifically: any decorative projections need proper drip edges and flashing to prevent water from pooling behind them. Ottawa's heavy snow loads and ice buildup mean that horizontal mouldings without adequate slope and drainage will trap moisture and fail within a few years. A knowledgeable contractor will build a slight outward slope (minimum 5-degree pitch) into every horizontal element and install metal drip caps where mouldings meet the wall surface. This is a detail that separates quality work from work that looks great for two years and then starts crumbling.

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

• Luxe Painting and Renovations
• JC Carpentry
• Dreamwood Construction & Renovations
• Floor-2-Wall Inc
• Renovo Construction

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