Callon Dietz

What Callon Dietz does

Callon Dietz is a private Ontario-based surveying and geomatics firm founded in 1967 and headquartered in London, Canada, operating as the Callon Dietz Group of Companies. The firm provides legal (cadastral) surveys, engineering surveys, land development and condominium registration, geodetic and land information services, utility surveys, subsurface utility engineering (via subsidiary Callon Dietz Locates Inc.), bathymetric surveys, aerial/drone surveys, and mobile mapping (MMS/LiDAR). It serves engineering firms, real estate developers, utility and energy companies (including wind farm developers), all levels of government, and individual property owners, with a project portfolio that spans subdivisions, condominiums, highway reconstruction, and large utility installations across Ontario.

The firm is built around specialized, capital-intensive measurement technology: it owns a Mobile Mapping System with sub-centimeter LiDAR scanners, a 360° camera, IMU, and GPS; a photogrammetric eBEE+ RTK UAS drone with a province-wide blanket SFOC; GNSS-coupled bathymetric sonar; and a full suite of GNSS receivers and total stations. An in-house quality control process is certified to ISO 9001:2015, the firm holds COR health and safety certification, and it was the first cadastral surveying firm in Ontario to achieve ISO 9000 certification. It is staffed by 6 Ontario Land Surveyors, 20 two-person field crews, and 15 CAD drafters, supported from four Ontario offices (London, North Bay, Carleton Place/Ottawa-area, Oshawa).

Revenue is generated on a project-based, professional services model with custom quote-based pricing, delivered through field crews deployed to client sites. Go-to-market is direct, relationship-driven sales, complemented by a website quote-request channel and a LinkedIn presence. The firm is privately held with no disclosed external investors, no public funding, and is structured as a parent (Callon Dietz Incorporated) with two wholly-owned subsidiaries: Callon Dietz Locates Incorporated (SUE, 2018) and Bitwise Ideas Inc. (technology services).

Name

Callon Dietz

Legal name

Callon Dietz Incorporated

Website

https://callondietz.com

Company type

Private

Founded year

1967

Operating status

Operating

Headcount range

51–100 employees

Short description

Callon Dietz is a private Ontario surveying and geomatics firm, founded in 1967, providing legal, engineering, geodetic, subsurface utility, bathymetric, and LiDAR/UAS surveying services to engineering firms, real estate developers, utilities, and government clients across Ontario from four office locations.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

Canada

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Surveying and Mapping Services: Professional surveying services provided on a project basis. Services include legal/cadastral surveys, engineering surveys, land development, subsurface utility engineering, aerial surveys, bathymetric surveys, geodetic surveys, utility surveys, MMS/LiDAR scanning, and land information services. Revenue is generated through project-based fees for surveying work.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Callon Dietz is a professional land surveying firm providing comprehensive surveying, mapping and land information services across Ontario since 1967. Its core offering is project-based cadastral, engineering, geodetic, bathymetric, aerial (UAS), utility and Subsurface Utility Engineering (SUE) surveys, plus subdivision/condominium land development registration, delivered by Ontario Land Surveyors, 20 two-person field crews and 15 CAD drafters using GPS/GNSS, LiDAR MMS, UAS drones and sonar equipment from four Ontario offices.

Product overview

Callon Dietz is a land surveying company providing comprehensive surveying, mapping, and land information services since 1967. The company operates as a single integrated platform offering multiple specialized surveying services: Subsurface Utility Engineering (SUE), Legal (Cadastral) Survey, Bathymetric Surveys, Engineering Surveys, Land Development, Land Information, Geodetic Surveys, Utility Surveys, Aerial Survey/Drone (UAS), and MMS/LiDAR Technology. These services are delivered through field crews equipped with advanced technologies including GPS receivers, LiDAR scanners, UAS drones, and sonar equipment, supported by CAD drafting and project teams across offices in London, North Bay, Carleton Place (Ottawa-area), and Oshawa.

Differentiator

Problem solved

Functional benefit

Products and services

• Subsurface Utility Engineering (SUE) Comprehensive utility investigations that relate utility records, field investigations and professional judgment to create comprehensive utility drawings in accordance with CI/ASCE 38-02 standards. Services include utility mapping, CCTV investigation, sewer mapping, LiDAR scanning of sewer chambers, and test holes using hydro-vac excavation. Delivered to engineering firms, utility companies, energy developers, contractors and government agencies across Ontario.
• Legal (Cadastral) Survey Property boundary establishment and re-establishment services including Surveyor's Real Property Report (SRPR) and Reference Plans. Used by legal professionals, real estate professionals and property developers for development, severances and real estate transfers in Ontario.
• Bathymetric Surveys Underwater surveys of rivers, lakes and ponds using GNSS receiver coupled with SonarMite Echo Sounder to capture precise data for building digital terrain models of water bodies. Used for engineering projects such as ferry bubbler line mapping and shoreline infrastructure.
• Engineering Surveys Survey services for highway projects, city streets, open fields and city blocks, including digital terrain modelling, boundary confirmation, plan compilation and geodetic surveys, executed under an in-house quality control process certified to ISO 9001:2015. Used by engineering firms and government agencies on Ontario infrastructure projects.
• Land Development Subdivision design and registration services including preparation and registration of plans of subdivision and various condominium types (standard, highrise, townhouse, detached, commercial, mixed use, vacant land, leasehold, and conversion of rental units). Provided to residential and commercial property developers.
• Land Information Geo-spatial data mapping services relating spatial data to digital maps, including Automated Mapping/Facilities Management (AM/FM), utilities mapping and parcel mapping. Used by municipalities, utilities and organizations managing large land and asset datasets.
• Geodetic Surveys Surveys defining height, latitude and longitude of points using geodesy to create 3D renderings accounting for the size and shape of the earth, including horizontal/vertical control, control network design, GPS positioning and precision leveling. Used by engineering firms and government on large infrastructure projects.
• Utility Surveys Survey services for utility companies including property line establishment for gas main installation and wind farm development, providing turbine, access road and distribution line layout, plus topographic and legal surveys for energy infrastructure.
• Aerial Survey / Drone (UAS) Photogrammetric survey services using the company-owned eBEE+ RTK UAS (unmanned aerial system) to collect survey grade data for creating DTM/DEM, orthorectified photogrammetric models, construction, quantity/volume surveys, forestry and agriculture applications. Callon Dietz holds a blanket SFOC (Special Flight Operation Certificate) for the province of Ontario, enabling immediate client service without the standard 20 business day approval wait.
• MMS/LiDAR Mobile Mapping Company-owned Mobile Mapping System (MMS) combining 2 sub-centimetre LiDAR scanners, a 5 centimetre LiDAR scanner, a 360° spherical camera, an Inertial Measurement Unit (IMU) and a GPS receiver to collect survey-quality data. Features are extracted from georeferenced LiDAR data in office software packages, minimizing road surface time and improving worker safety for asset management and feature extraction projects.

Quantifiable outcome

• 1,200 parking spaces and ten multi-storey towers handled for The Barrel Yards condominium project
• +6 more outcomes

Named customers7 records

Segments7 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• GeoVerra: One of Canada's largest surveying and geomatics firms, operating across Western Canada with growing Ontario presence. Comparable in advanced LiDAR, drone, and geospatial service offerings.
• EXP: Global multi-disciplinary engineering firm with significant Ontario surveying, geomatics, and infrastructure practices. Competes for similar municipal, transportation, and land development work.
• Badger Daylighting: Canadian provider of hydrovac excavation and subsurface utility services that overlap directly with Callon Dietz Locates' SUE offering, particularly on test hole and utility locating scopes.
• Aplin Martin: Canadian surveying, engineering, and planning firm with strong Ontario presence. Directly comparable in delivering cadastral, engineering, and land development surveying services.
• Tatham Engineering: Ontario engineering firm offering surveying, land development, and municipal infrastructure services. Comparable in customer base (developers, municipalities) and project types.
• J.D. Barnes Limited: One of the largest land surveying firms in Ontario, offering legal/cadastral, engineering, and hydrographic surveys. Closest direct competitor to Callon Dietz in scale and service mix.
• Tulloch Engineering: Ontario-based multi-disciplinary engineering and surveying firm with similar geographic footprint and service offerings including land development, municipal, and transportation surveying.
• R. Avis Surveying: Ontario land surveying firm offering legal/cadastral, engineering, and construction surveys. Comparable in service mix and customer types (developers, municipalities, legal professionals).

Broad incumbents

• WSP Global: Major global engineering consultancy with extensive Ontario surveying, geospatial, and infrastructure practices. Competes for large-scale municipal, transportation, and energy projects.
• Stantec: Large global engineering consulting firm with surveying capabilities serving Ontario infrastructure and land development markets. Acts both as a Callon Dietz client (Hwy 401 work) and a competitor on integrated bids.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/callon-dietz

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Callon Dietz