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Business Details
50+ Years
experience
Expert Construction Services in Niagara Region
At Duomax Developments, we are committed to serving with character and purpose while respecting the environment and the people we work with. Established in 1975, our locally-owned business has built a strong reputation in the Niagara Peninsula through decades of delivering high-quality construction management, design-build, and pre-engineered building services. Our team prioritizes open communication, positive working relationships, and focused attention to project details, ensuring every build is completed within budget and on schedule. With a robust network of trusted employees and subcontractors, we bring expertise, integrity, and a collaborative approach to every project.

Our clients benefit from our deep industry knowledge, competitive pricing, and a proven ability to manage complex projectsfrom initial design to final completion. We take pride in our ability to exceed expectations, whether through innovative solutions, cost-effective strategies, or unwavering commitment to client satisfaction. Our decades of experience and strong company culture position us as a trusted partner for commercial, institutional, and industrial construction needs.
Services
Competitive Bid Process Design + Build Pre-Engineered Steel Buildings Commercial Construction Institutional Construction Industrial Construction Project Management
Details
  • Year established: 1975
Highlights and features
  • We have over 45 years of experience in commercial and industrial construction.
  • Our team provides tailored project management and design-build solutions.
  • We maintain a robust network of trusted subcontractors and industry partners.
  • Our clients benefit from transparent communication and competitive pricing.
  • We prioritize quality control and on-time project delivery for every build.
Associations and certifications
  • Robertson Building Systems Authorized Builder
What people say
On time and within budget Excellent communication and paperwork Cost-effective solutions Strong company culture Depth of specialty trades
Services
Competitive Bid Process
Our competitive bid process ensures transparent, fixed-cost construction projects. We collaborate with architects and owners to provide accurate cost estimates, manage tenders, and deliver projects on schedule. Clients benefit from our expertise in coordinating subcontractors, finalizing budgets, and maintaining strict adherence to contractual timelines and specifications.
Design + Build
We streamline construction through integrated design and build services. Our team collaborates with architects and engineers to develop site plans, secure permits, and execute projects from concept to completion. Clients receive cohesive project management, cost-effective solutions, and timely delivery of fully functional buildings tailored to their needs.
Pre-Engineered Steel Buildings
As a Robertson Building Systems Authorized Builder, we deliver cost-effective pre-engineered steel structures. Our process includes customized design, efficient manufacturing, and precise assembly of components. Clients gain durable, energy-efficient buildings with rapid construction timelines for commercial, industrial, or institutional applications.
Construction Management
We provide comprehensive construction management for clients with existing designs. Our services include budget monitoring, subcontractor coordination, safety compliance, and quality control. Clients benefit from proactive issue resolution, transparent reporting, and expert guidance to ensure projects meet specifications and deadlines.
Institutional Construction
We specialize in constructing schools, libraries, care centers, and other institutional facilities. Our approach prioritizes functionality, safety, and accessibility while adhering to strict regulatory standards. Clients receive durable, purpose-driven spaces designed to serve community needs with long-term value.
People
John Werkman
Project Manager | Owner
With 41 years at Duomax, John Werkman leads with expertise gained from Niagara College and hands-on experience. As owner since 2010, he drives excellence through his deep understanding of construction processes and client needs.
Ed Poort
Project Manager | Estimator | Owner
Ed Poort joined Duomax directly after high school, completing carpentry apprenticeships before becoming a project manager and owner in 2019. His practical expertise and estimation skills ensure precise project planning and execution.
Stephan Jaeggi
Project Manager
Stephan Jaeggi brings international construction experience from Switzerland. As a detail-oriented project manager since 2008, he combines professional carpentry expertise with leadership in site supervision and client coordination.
Mike Werkman
Site Superintendent
Mike Werkman, a certified carpenter, oversees pre-engineered building operations. His 2017 transition to full-time leadership in this division ensures efficient delivery of versatile steel construction solutions.
Ross Serianni
Capital Projects Manager
Ross Serianni, with the District School Board of Niagara, collaborates with Duomax on complex educational projects. His partnership highlights the company's ability to manage large-scale institutional builds within budget and schedule.
Questions
What construction services does Duomax Developments offer?
We provide competitive bid projects, design-build solutions, pre-engineered steel buildings, and construction management for commercial, institutional, and industrial clients.
Which areas does Duomax serve?
We operate throughout the Niagara Peninsula, Dunnville, Cayuga, and Caledonia, delivering construction solutions tailored to regional needs.
How does Duomax handle complex projects?
Our team coordinates subcontractors, maintains strict schedules, and provides proactive solutions to ensure complex builds meet deadlines and specifications.
What sets Duomax apart from other contractors?
We combine 50+ years of local experience, a robust network of trades, and a client-focused approach to deliver reliable, high-quality results.
Can Duomax assist with pre-engineered steel buildings?
Yes, as a Robertson Building Systems Authorized Builder, we offer efficient, customizable steel construction solutions for diverse applications.
How does Duomax ensure project quality?
We implement rigorous quality control, safety monitoring, and budget management throughout every project phase to maintain high standards.