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Our services are in demand from engineering companies, all levels of government, construction companies,
real-estate developers, and professionals in the utility and energy industry.



Whether it’s a highway project, city street, open field or city block, our experienced staff uses a combination of technologies for a correct and cost-effective product. Prior to beginning each project, accuracy specifications are reviewed to determine which measurement technology will best meet client specifications. We use a quality control process developed in-house that is certified to ISO 9000:2015. Once a survey is complete, we perform a thorough field check of the site, plan in hand.

  • Digital terrain modelling                         

  • Boundary confirmation

  • Plan compilation

  • Geodetic surveys



SUE investigations relate utility records, field investigations and professional judgment to create a comprehensive utility drawing, in order to reduce overall project risk. Callon Dietz works with the project owner, consultant, developer or property owner to establish a scope of work that is required for your specific project. We work with the latest technologies in the industry to complete our investigations efficiently and thoroughly. Our investigations are completed in accordance with CI/ASCE 38-02 standards, providing you a drawing and report summarizing the results of the investigation, which are reviewed and sealed by a professional engineer. With our experienced staff we have the in-house staff and strategic partners in order to provide:


  • ASCE 38-02 compliant SUE Investigations

  • Test Holes using hydro-vac excavation

  • CCTV investigation and sewer mapping

  • ​LiDAR Scanning Sewer Chambers

  • Utility Mapping Investigations



At its most basic, a survey establishes or re-establishes property boundaries. At its most complex, a properly prepared survey can settle legal disputes over property ownership.

Callon Dietz is the first cadastral surveying firm in Ontario to achieve ISO 9000 certification. This means a lot to us and even more to customers who value quality.

Our services are in demand from legal and real estate professionals, residential and commercial property developers, and individual homeowners. We prepare boundary plans required for development, severances and real estate transfers. Surveys can be supplied traditionally (paper) or in digital CAD format.


  • SRPR (Surveyor’s Real Property Report)

  • Reference Plan



Callon Dietz works with a number of utility companies to assist them in locating and constructing their new plant. For Union Gas, for example, we assist them with establishing property lines for gas main installation.

Callon Dietz also works with a number of wind farm developers laying out turbines, access roads and distribution lines. Our expertise in handling large data sets over large areas help keep the construction process on schedule.



Callon Dietz owns a photogrammetric eBEE+ RTK UAS to collect survey grade data in a safe and cost effect manner. With the eBEE we can create photogrammetric DTM’s in open areas accurate to a few centimeters and prepare orthorectified photogrammetric models.

Callon Dietz’s works closely with Transport Canada to plan and execute all the UAS’s flights in accordance with issued Special Flight Operation Certificate and we hold a blanket SFOC for the province of Ontario allowing us to serve our clients at a moment’s notice without having to wait the typical 20 business days for approval. Callon Dietz’s eBEE + RTK UAS coupled with our expert team of UAS surveyors are serve clients in many sectors:

  • Engineering/Topographic (DTMs, DEMs)

  • Construction

  • Quantity/Volume Surveys

  • Forestry

  • Agriculture



Callon Dietz owns a mobile mapping system utilizing 2 sub-centimetre LiDAR scanners, a 5 centimetre LiDAR scanner, a 360⁰ spherical camera, an inertial Measurement Unit (IMU) and a GPS receiver to collect survey quality data.

Control chevrons are established that are visible to the LiDAR sensors that allows us to align the LiDAR data to the project control network. Audit lines are measured to verify the integrity of the LiDAR data. This methodology results in accuracy levels that exceed MTO specifications for horizontal and vertical position.

Features are extracted from the georeferenced LiDAR data in a number of software packages moving the data extraction from the field to the office. The combination of point cloud images and digital photographs allow for positive identification of features required for extraction.

The mobile mapping system helps to minimize time spent on the road surface increasing worker safety. The scan data and digital imagery is also useful for asset management. Feature condition can often be determined from the digital data eliminating a field visit.



Land information services relate geo-spatial data to digital maps. Geo-spatial data includes everything from street line networks, addresses, and utilities to the components that make up the fabric of a specific lot such as roads, buildings and easements.

Geo-spatial data is useful in applications as diverse as emergency vehicle routing, land use detailing, and market research. At Callon Dietz, we begin a typical Land Information project by mapping all of the specified real-world physical details and relating them to a world coordinate system. Our expertise combined with superior equipment facilitates rapid and accurate data acquisition.


  • Automated Mapping/Facilities Management (AM/FM)

  • Utilities mapping

  • Parcel mapping



Using a GNSS receiver coupled with a SonarMite Echo Sounder, Callon Dietz can capture highly precise data from the beds of rivers, lakes and ponds to build digital terrain models of the bottom of these bodies of water.



Geodetic surveys define the height, latitude and longitude of a point, resulting in data that can be correlated to a known coordinate system. Using Geodesy, we create a 3D rendering that accounts for the size and shape of the earth.

• Horizontal/vertical control
• Control network design

• GPS positioning
• Precision leveling


Callon Dietz prepares a significant proportion of the subdivisions and condominiums in Middlesex County. We also work in the neighbouring counties and as far as Niagara and Simcoe counties. We have extensive experience in subdivision design and registration, and have registered many types of condominiums including:

  • Standard Condominiums                       

  • Townhouse                                              

  • Commercial                                             

  • Vacant Land Condominiums                  

  • Conversion of rental units, both townhouse and highrise

  • Highrise

  • Detached

  • Mixed use

  • Leasehold Condominiums

Defining ownership limits is quite complex in most condominium projects. Well-crafted plans accurately establish the boundary between individual ownership and common, or shared, elements. These include common elements that are used exclusively by an individual unit owner such as driveways, patios and courtyards. Any required easements are also defined. In phased developments, additional easements need to be defined to assure that all unit owners and utility companies have access to the facilities and services in the project.

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