What Paterson Group does

Paterson Group is a privately held Canadian consulting engineering firm founded in 1956 by John (Jack) D. Paterson in Ottawa, Ontario. The firm provides multi-disciplinary engineering services organized around six core practices: geotechnical engineering, environmental engineering, hydrogeological studies, materials testing (with CCIL-certified laboratory), building science (including building envelope engineering, building assessments, and energy/sustainability consulting), and noise/vibration monitoring. The firm operates a CCIL certified laboratory spanning Categories A through E for asphalt, a CSA A283 Level 1 certified concrete laboratory, and holds Canadian Nuclear Safety Commission authorization for nuclear density measurements. Specialized technical capabilities include Pile Dynamic Analysis (PDA) per ASTM D4945-17, advanced asphalt testing (Hamburg Wheel, SCB, DCT, Texas Overlay, Cyclic Fatigue, Flow Number, Dynamic Modulus), and nuclear density compaction testing. The company employs approximately 150-160 professionals, many holding P.Eng., P.Geo., QPESA, QPRA, and LEED AP credentials.

The firm serves a diversified client base of private developers, construction companies, municipalities, provincial and federal government entities, condominium corporations, and rural property owners. Services are delivered across four Ontario office locations: Ottawa (headquarters at 9 Auriga Drive plus a materials testing lab at 28 Concourse Gate), Mississauga (GTA office at 1535 Meyerside Drive, opened 2023), Sudbury (lab and office at 1648 Pioneer Road), and North Bay (office at 63 Gibson Street, opened 1998). Revenue is generated through professional services engagements billed on a project basis via a request-for-quote system; pricing is quote-based and project-specific rather than disclosed publicly. The firm's marketing relies on professional association memberships across 16+ industry bodies, direct client relationships, and a corporate website.

Paterson Group underwent a significant leadership restructuring in 2021, with David Gilbert appointed President alongside a new executive team, followed by a 2022 headquarters relocation and rebrand, and a 2023 expansion into the Greater Toronto Area — the most material geographic expansion in its 70-year history. The firm has been described as a 'go-to consultant for developers and the construction industry in Ottawa/Gatineau,' with many client relationships spanning over 20 years, evidencing strong client retention and institutional reputation in the Eastern Ontario market.

Name

Paterson Group

Legal name

Paterson Group

Website

https://patersongroup.ca

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

101–250 employees

Short description

Paterson Group is a privately held Canadian consulting engineering firm founded in 1956, providing geotechnical, environmental, hydrogeological, materials testing, and building science services to developers, construction firms, municipalities, and provincial/federal government clients across Eastern Ontario, GTA, and Northern Ontario.

Ownership category

akta.pro rank

Headquarters

HQ city

Ottawa

HQ country

Canada

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Consulting Engineering Services: Professional consulting engineering services billed on a project basis including geotechnical investigations, environmental assessments, materials testing, hydrogeological studies, and building science consulting for residential and commercial development applications.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Paterson Group is a multi-disciplinary consulting engineering firm providing geotechnical, environmental, hydrogeological, materials testing (with a CCIL certified laboratory), building science, noise and vibration, and energy/sustainability services. It serves property developers, construction firms, municipalities, and government clients across Ontario through offices in Ottawa, the Greater Toronto Area, North Bay, and Sudbury.

Product overview

Paterson Group is a multi-disciplinary consulting engineering firm offering a comprehensive portfolio of engineering services organized around six core divisions: Geotechnical Engineering, Environmental Engineering, Hydrogeological Studies, Materials Testing (with a CCIL-certified laboratory), Building Science (including Building Envelope Engineering and Building Assessments), and Noise & Vibration Studies. The company operates as a single unified consulting practice rather than a platform-plus-modules architecture, where these service areas are offered both independently and in combination to address complex infrastructure and construction projects. Their materials testing division includes specialized sub-services for asphalt, concrete, and soil/aggregates laboratory testing, while their building science division encompasses condominium/landlord services, energy & sustainability consulting, structural repairs, and rural development design. All services are delivered across multiple Ontario locations (Ottawa, GTA, North Bay, Sudbury) by their team of over 150 engineering professionals.

Differentiator

Problem solved

Functional benefit

Products and services

• Geotechnical Engineering
• Environmental Engineering
• Hydrogeological Studies

Quantifiable outcome

• Many clients have been using Paterson services for over 20 years

Named customers4 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators4 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• EXP Services: Canadian multi-disciplinary engineering firm offering geotechnical, environmental, building science, and materials testing services across Ontario — closely overlaps Paterson's six-division service model.
• SLR Consulting: Global environmental and advisory consultancy with strong Ontario presence in environmental site assessments, permitting, and geosciences — comparable environmental and engineering service mix to Paterson's environmental and hydrogeology divisions.
• Englobe Corp. Canadian employee-owned engineering, environmental, and materials testing firm with Ontario operations spanning geotechnical, environmental site assessment, and construction quality services — similar multi-disciplinary model.
• DS Consultants: Ontario geotechnical, environmental, and materials testing firm serving the GTA — competes directly with Paterson for the same developer and municipal project pipeline.
• Terraprobe Geoscience: Ontario-based geotechnical and geo-environmental consulting firm serving developers, construction companies, and municipalities in the GTA and surrounding regions — directly comparable in scope, customer mix, and Ontario footprint.
• GHD Group: Global employee-owned engineering, environmental, and construction services firm with a strong Ontario presence across geotechnical, environmental, and materials testing — directly comparable service portfolio and customer base to Paterson Group.

Broad incumbents

• AECOM: Global infrastructure consulting firm with a large Canadian environmental and geotechnical practice — competes for major Ontario infrastructure and developer mandates but as part of a much broader portfolio.
• Stantec: Major Canadian-headquartered engineering consultancy with broad environmental, geotechnical, and infrastructure practices across Ontario — overlapping service lines and customer segments but operating at a much larger scale.
• WSP Global: Global professional services powerhouse with extensive geotechnical, environmental, and materials testing capabilities across Canada — competes for the same Ontario municipal, provincial, and developer RFPs but at materially larger scale.

Regional players

• Cambium Group: Ontario-based consulting firm providing geotechnical, environmental, and building science services to developers, municipalities, and First Nations — directly comparable service lines with an Ontario-centric footprint similar to Paterson.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 Paterson Group