Callon Dietz is a leading Ontario surveying, mapping, and land information firm, delivering comprehensive above- and below-ground solutions backed by trusted expertise and innovative technology. From major infrastructure and development projects to utility mapping, our team provides accurate, reliable, and timely results that help move projects forward with confidence.
Over 60 Years of Proven Experience
Advanced Surveying Technology
Full-Service Geomatics Solutions
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Trusted by Industry Leaders
Commitment to Accuracy & Safety
Your trusted partner for advanced surveying across Ontario
For more than 60 years, Callon Dietz has been a trusted partner to engineers, developers, government agencies, and utility providers, delivering reliable surveying, mapping, and land information services across Ontario.
With offices in London, North Bay, and Carleton Place, and supported by remote crews throughout Ontario, our integrated team brings together local knowledge with the collective expertise, resources, and specialized capabilities of our entire organization. This company-wide approach allows us to respond efficiently, adapt to project needs, and deliver consistent quality and dependable results wherever our clients need us.
Built on precision.
Driven by expertise.
Callon Dietz is a recognized leader in the Ontario surveying industry, backed by ISO 9001 registration and COR Safety certification—demonstrating a commitment to quality, consistency, and safety on every project.
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We invest in the latest surveying technologies to ensure precision at every stage, including robotic total stations, high-accuracy GNSS, mobile LiDAR mapping systems, UAS and drone photogrammetry, and advanced 3D scanning and digital modelling.
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