Reliable, accountable construction delivery from start to finish.
ASCO Construction provides general contracting services in Ottawa, Kingston, the Greater Toronto Area and across Ontario. We deliver complex Industrial, Commercial, and Institutional (ICI) and water and wastewater projects with precision, discipline, and accountability.
With more than 35 years of experience, we execute fixed-price and negotiated projects with a clear focus on safety, quality, schedule, and cost control. Our approach is simple: we own the work and stand behind the outcome.
As your general contractor, ASCO takes full responsibility for project execution. We coordinate trades, manage schedules, control costs, and maintain quality from mobilization through completion. We provide:
Our teams maintain clear communication throughout your project, so you always know where things stand.
ASCO has developed strong relationships with subcontractors, suppliers, and consultants across Ontario. These partnerships allow us to build reliable teams and deliver consistent results across projects.
We select partners based on:
Proven safety performance
Quality workmanship
Reliability and schedule adherence
Alignment with ASCO’s high standards
We focus on overall value, not just price, to ensure long-term project success.
ASCO typically provides general contracting services through the traditional Design-Bid-Build delivery model. In this approach, the owner first engages architects and engineers to complete the design and contract documents before the project is tendered for construction.
ASCO then submits a fixed-price bid based on the completed design. Once awarded, we assume responsibility for construction execution, project coordination, schedule management, quality control, and site safety. This delivery model allows owners to benefit from our proven construction process while retaining responsibility for the project design.
Many municipalities, public agencies, and private owners choose Design-Bid-Build because it provides a clear and well-defined scope before construction begins. The competitive tendering process can also help achieve market pricing while maintaining transparency and fairness.
This delivery model is often best suited for projects where design requirements, budget, and performance expectations are established prior to tendering.
Quality is built into every stage of our construction process. ASCO implements project-specific quality control and quality assurance programs that include inspections, testing, documentation, commissioning, and verification of compliance with contract requirements.
Our goal is simple: deliver a facility that performs as intended and meets the expectations of the owner, consultants, and end users from day one.
ASCO develops detailed project schedules that identify key milestones, procurement requirements, commissioning activities, and operational considerations. Throughout construction, we continuously monitor progress and proactively address challenges before they impact the project.
By combining careful planning with clear communication, we help keep projects moving efficiently from mobilization through to completion.
Safety is a core value at ASCO. As a COR-certified contractor through IHSA, we maintain comprehensive health and safety programs supported by regular training, site-specific hazard assessments, and ongoing supervision.
We work closely with our employees, subcontractors, and project partners to foster a strong safety culture on every project. Our goal is simple: everyone goes home safe at the end of the day.
Strong relationships are essential to successful projects. ASCO works with qualified subcontractors and suppliers who share our commitment to safety, quality, and professionalism.
Our project teams coordinate all trades, monitor performance, and maintain clear communication throughout construction to ensure work is completed efficiently, safely, and in accordance with project requirements.