About Us

QUADCON Group Inc. is a commercial general contractor servicing the needs of building owners, real estate management firms and property managers across the Greater Toronto Area (GTA).

With over 30 years of experience in the various sectors of the building industry, our team has the expertise to expedite all your project needs. 

Quadcon Group - Our Team

Jon Prioste Photo Final Final

John Prioste, B.Tech.      

An Architectural Science (Project Management) graduate from Ryerson University (1991), John has over 30 years of project management and construction management experience. John worked as a construction project coordinator and facilities planner at one of Ontario's largest universities, prior to joining a construction general contracting company as a senior project manager. In 2001, John founded QUADCON Group Inc. As company President, John oversees all aspects of the business which continues to grow and expand.


Anna Prioste, B.Tech.

An Architectural Science (Building Science) graduate from Ryerson Universtiy (1991), Anna has over 30 years of experience in the building industry. Prior to joining Quadcon, Anna worked in the building materials testing field and then worked for over 15 years for two consulting engineering firms, providing building science consulting services. She has extensive experience with contract documents, specifications and field reviews. Anna is a Past-President of the Ontario Building Envelope Council. She joined QUADCON in 2016.


Joe Da Cunha

Site Supervisor specializing in custom cabinetry and millwork. Highly skilled and knowledgeable in all aspects of construction.

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Robert Schunk

Drywall, taping, steel stud framing, partition layout and suspended ceiling grid and ceiling tile installation.


QUADCON Group Inc. and our sub-trades are WSIB compliant.

All of our employees have Health and Safety training including: Ministry of Labour WHMIS / GHS and Working at Heights training (2016).       

We also actively participate and meet the requirements of various third party compliance management programs including     

ComplyWorks, Contractor Check, ISNetworld and eRailSafeCanada.