What is the total cost to drywall and finish a Toronto restaurant or retail space being converted to office use?

Commercial drywall costs for restaurant-to-office conversions in Toronto range from $8-$18 per square foot for walls and $12-$25 per square foot for ceilings, depending on fire ratings, soundproofing requirements, and finish levels. A typical 2,000-3,000 square foot space conversion runs $35,000-$85,000 for the complete drywall scope, but costs vary dramatically based on existing conditions and new office layout requirements.

Understanding the Scope Complexity

Restaurant-to-office conversions present unique drywall challenges that significantly impact costs. Restaurants typically have commercial-grade finishes, grease-saturated surfaces, and layouts optimized for food service rather than office work. The existing drywall may need complete removal due to grease contamination, odor absorption, or incompatible fire ratings. Kitchen areas often have specialized wall coverings (stainless steel, FRP panels, ceramic tile) that must be removed before new drywall installation.

Office spaces require different fire separations than restaurants under the Ontario Building Code. Tenant separations, exit corridors, and electrical/mechanical rooms may need upgraded fire ratings — typically 1-hour or 2-hour assemblies using multiple layers of 5/8-inch Type X drywall. If the conversion creates multiple office suites, each tenant separation requires proper fire rating and sound transmission class (STC) ratings to meet commercial building standards.

GTA Commercial Market Factors

Toronto's commercial construction market operates differently than residential drywall work. Union labour requirements, commercial insurance, WSIB compliance, and building management restrictions all increase costs. Most downtown Toronto commercial buildings restrict construction hours (typically 7 AM to 6 PM weekdays), require dust containment systems, and mandate freight elevator bookings that add scheduling complexity and cost.

Commercial drywall contractors in the GTA typically charge 40-60% more than residential rates due to higher overhead, specialized insurance requirements, and the technical complexity of commercial fire and sound ratings. Material costs are also higher — commercial-grade drywall, fire-rated assemblies, and acoustic treatments cost significantly more than standard residential materials.

Detailed Cost Breakdown

Demolition and preparation runs $2-$5 per square foot, depending on existing conditions. Grease-contaminated surfaces require specialized cleaning or complete removal. Restaurant kitchen areas may need environmental remediation if grease has penetrated the substrate.

New framing for office layout adds $3-$8 per linear foot for non-load-bearing partitions. Office spaces typically require more individual rooms, conference areas, and storage spaces than the open restaurant layout.

Drywall installation costs vary by assembly type:

• Standard office partitions (5/8-inch regular): $4-$7 per square foot


• Fire-rated tenant separations (double 5/8-inch Type X): $8-$14 per square foot


• Sound-rated assemblies for conference rooms: $10-$18 per square foot


• Acoustic ceiling systems: $12-$25 per square foot

Finishing levels for commercial office space typically require Level 4 finish throughout, with Level 5 in reception areas and executive offices where critical lighting conditions exist. Commercial finishing runs $3-$6 per square foot for Level 4, and $5-$9 per square foot for Level 5.

When to Hire Commercial Specialists

Restaurant-to-office conversions require commercial drywall contractors experienced with Ontario Building Code commercial requirements, fire ratings, and acoustic assemblies. This is not residential work — the fire separation requirements, permit complexity, and building management coordination require specialized expertise. Commercial contractors also carry the appropriate insurance and WSIB coverage required for commercial projects in Toronto.

The project will require building permits, architectural drawings showing fire separations, and multiple inspections. A qualified commercial drywall contractor can coordinate with the architect, building management, and city inspectors to ensure code compliance and project approval.

Find commercial drywall contractors experienced with office conversions through the Toronto Construction Network at torontoconstructionnetwork.com/directory?trade=insulation — they can provide detailed estimates based on your specific space requirements and building conditions.