What Nunn Constructors, LTD does

KWH Constructors Ltd is a privately held specialty trade contractor incorporated in 1989 and domiciled in British Columbia, Canada. The company erects complex structural steel and precast/pre-stressed concrete for bridges, commercial and institutional buildings, sports facilities, heritage façades, mass timber structures, and industrial/port infrastructure such as dockside cranes, ship-loaders, and conveyor systems. Projects are secured through competitive bidding and direct negotiation with general contractors and project owners across North America, served from a Burnaby, BC headquarters and an Issaquah, WA regional office.

Name

Nunn Constructors, LTD

Legal name

KWH Constructors Ltd

Website

https://kwhconstructors.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

11–50 employees

Short description

KWH Constructors is a Pacific Northwest specialty trade contractor that erects complex structural steel, precast, and mass timber for bridges, buildings, and industrial projects, and operates Somerset Engineering as an in-house construction engineering and equipment design subsidiary.

Ownership category

akta.pro rank

Product category

Structural Steel Erection Services

NAICS

Structural Steel and Precast Concrete Contractors (23812), Foundation, Structure, and Building Exterior Contractors (2381)

SIC

Construction - Special Trade Contractors (1700), Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Steel Plate, Sections & Welded Assemblies (IMADACAD)

Keywords

• Structural steel erection
• Bridge construction services
• Construction engineering consulting
• Precast concrete installation
• Seismic retrofit services

Headquarters

HQ city

Burnaby

HQ country

Canada

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Erection Services: Project-based steel and precast erection services for bridges, buildings, and industrial structures. Revenue generated through competitive bidding on construction projects with pricing based on project scope, complexity, and duration.
2. Engineering Consulting Services: Somerset Engineering provides construction engineering, design-build, design-assist, and technical consulting to third-party contractors and project owners.
3. Specialty Equipment Fabrication: Design and fabrication of purpose-built erection equipment, falsework, shoring, and lifting devices.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

KWH Constructors is a specialty trade contractor providing structural steel and precast erection services for bridges, buildings, and industrial structures. Its Somerset Engineering division delivers construction engineering, design-build, design-assist, and custom erection equipment design. Services include lifting equipment operation, field erection, seismic retrofits, port facilities maintenance, precast/pre-stressed concrete installation, heritage façade shoring, mass timber installation, and bulk materials handling maintenance.

Product overview

KWH Constructors is a construction services company offering a unified portfolio of specialized erection and engineering services. The core offerings include bridges construction, structural steel erection, heritage façade shoring, bulk materials handling and maintenance, and mass timber installation. The company operates its engineering division, Somerset Engineering, which provides in-house construction engineering, design-build, design-assist, and specialized equipment design services. All these services are integrated to deliver turn-key construction solutions for complex and architectural steel structures, with Somerset Engineering providing the construction engineering expertise that underpins the erection services.

Differentiator

Problem solved

Functional benefit

Products and services

• Bridge Construction and Erection Construction and erection of rail, road, pedestrian, pipeline, and temporary bridges, including prestressed concrete I girders or boxes, pre-cast segmental, seismic retrofit, jacking, strengthening, repair, and dismantle services using launch, hi-line, conventional, or water-borne erection methods, sold to general contractors and project owners.
• Structural Steel Erection Installation and erection of structural steel for sports complexes, recreational facilities, office buildings, hi-rise structures, institutional and industrial projects, including architectural precast and complex structural steel retrofit services, sold to commercial developers and contractors.
• Heritage Façade Shoring Design, supply, and installation of facade shoring systems for heritage structures, including deep foundation shoring design/build and vertical support shoring for houses or commercial structures.
• Bulk Materials Handling and Maintenance Services New construction, maintenance, repair, refurbishment, and shutdown services for dockside cranes, stacker/reclaimers, ship-loaders, car dumpers, conveyor galleries, transfer towers, emergency repairs, and salvage dismantle operations for port, mining, and industrial operators.
• Mass Timber Installation Installation of mass timber construction including architectural applications, sports facilities, and commercial buildings using CLT (Cross-Laminated Timber), GLT (Glulam), NLT (Nail-Laminated Timber), DLT (Dowel-Laminated Timber), MPP (Mass Plywood Panel), and SCL (Structural Composite Lumber).
• Somerset Engineering Construction Engineering In-house construction engineering division providing Design-Build, Design-Assist, detailed construction methods, construction sequence analysis, design of purpose-built falsework, shoring and lifting equipment, engineering, fabrication and layout drawings, and heavy lifting/jacking procedures to third-party contractors, project owners, and KWH's own erection operations.
• Specialized Erection Equipment Design and Fabrication Design and construction of specialized erection equipment including derricks, cableways, travelers, erection machines, gantries for steel or concrete members, temporary erection trusses for bridge assembly and launching, heavy jacking, lifting, falsework, and rigging, supporting project-based equipment needs.

Quantifiable outcome

• Longest cable-stayed bridge in the world at time of construction (Alex Fraser Bridge) completed with 18-month superstructure construction
• +1 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Somerset Engineering LtdcoreStrategic or Co-development Partner · 1 January 1981Somerset Engineering is KWH's subsidiary engineering division, originally established in 1981 as one of the first engineering companies in North America solely dedicated to construction engineering. It provides erection schemes, equipment specifications, connection design, and construction engineering consulting services. Somerset supports both KWH's erection operations and serves third-party contractors.
• Ironworkers UnionminorOthersAffiliated with ironworkers union as part of the company's unionized workforce structure.
• Operating Engineers UnionminorOthersAffiliated with operating engineers union as part of the company's unionized workforce structure.

Scale indicators4 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• PCL Construction: Major North American general contractor with extensive heavy civil and building construction operations. KWH has a long-standing subcontractor relationship with PCL (notably on Alex Fraser Bridge), and PCL is a relevant peer in the broader construction services market where KWH competes for project flow.
• Weeks Marine: Major US marine and heavy civil construction contractor with capabilities in bridge, port, and heavy structural construction. Comparable to KWH's port facilities work and heavy bridge erection, though operating at significantly larger scale and broader scope.
• Flatiron Construction: Major US heavy civil contractor specializing in transportation infrastructure including bridges, highways, and rail. Comparable to KWH's heavy civil bridge erection work, though operating as a large general contractor across a broader portfolio rather than as a specialty erector.

Direct peers

• SteelFab: US structural steel fabricator and erector providing services for commercial buildings, industrial facilities, and infrastructure. Directly comparable to KWH in offering integrated structural steel erection services, with overlapping AISC-certified operations and similar target markets.
• DBM Global (Schuff Steel): Large US structural steel fabricator and erector with operations across multiple regions. Comparable to KWH as a specialty structural steel erector serving commercial, industrial, and infrastructure clients, with similar value proposition around complex structural installations.
• Hillsdale Fabricators: Mid-sized US structural steel fabricator and erector serving commercial and industrial markets. Comparable to KWH as a regional specialty steel erector with similar AISC certification and project portfolio mix in buildings and infrastructure.
• Koontz Steel & Construction: Structural steel erector serving commercial and industrial construction in the western US. Direct peer to KWH in structural steel erection services for buildings, with overlapping capabilities in complex structural installations and similar unionized operations.
• Canam Group: Canadian-based fabricator and erector of structural steel and steel bridges for commercial, industrial, and infrastructure projects. Closely comparable to KWH in terms of structural steel erection focus, bridge work, and integrated engineering capabilities, though operating at a much larger scale across North America.
• SME Steel Contractors: US-based structural steel erector serving commercial, industrial, and large-scale projects across the western US. Direct peer to KWH in specialty structural steel erection, with comparable union workforce and AISC-style certifications, though larger in scale.

Others

• WSP Global: Global engineering consulting firm providing design, engineering, and project management services including structural and bridge engineering. Comparable to Somerset Engineering (KWH's subsidiary) in construction engineering consulting services, though WSP operates at vastly greater scale across many disciplines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/kwh-constructors

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

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 Nunn Constructors, LTD