O.N. Site Construction Inc. – Design-Build Specialists

O.N. Site Construction Inc. will fulfill all of your Design-Build needs. Our highly skilled engineers and architects create design plans in response to your needs and in direct consultation with you.
Our design-build services include:

toronto design build ontario
    • Architectural Design
    • Structural Design
    • Mechanical and Electrical Design
    • Landscaping Design
    • Property Surveys
    • Soil Testing
    • Building Permit Application
    • Site Plan Approval
    • Detailed Cost Estimates
    • Superior Site Supervison


We are a Toronto Design-build company with unmatched customer service.

The experts at O.N. Site Construction Inc. apply their knowledge of industry and marketplace trends when they partner with you to design the structure you envision. We  strategically coordinate all phases of the construction project so that all of your construction goals are met. At O.N. Site  Construction Inc. we unify our resources so that success is found at every step of the Design-Build phase.