Stirloch

What Stirloch does

Stirloch Group is a privately-owned Australian civil engineering and construction contractor founded in 1997, headquartered in Traralgon, Victoria, with a Queensland office in Woolloongabba (Brisbane) and a Design Group office in East Brighton. The company delivers design-and-construct (D&C) infrastructure projects on a project-tendered basis across four service lines: Water & Waste Water Services (treatment plants, reservoirs, pump stations, pipelines), Civil Engineering & Construction (multidisciplinary civil, mechanical, and electrical works for public and private sector clients), Commercial Property Development via its Stirloch Developments subsidiary, and in-house civil/structural/hydraulic design through its Design Group.

Stirloch serves a predominantly Australian public-sector client base — including federal, state (Victoria, Queensland), and local government entities, water utilities (Seqwater, Unity Water, South-East Water, Barwon Water, Gippsland Water, Wannon Water, Western Water, Gold Coast Water, Trility), and regional councils (Bundaberg, Gladstone, Isaac, Lismore, Logan, Sunshine Coast, Tablelands, Toowoomba, Tweed) — alongside private-sector customers such as Australian Paper, Loy Yang Power, Stanwell Energy, Fulton Hogan, Officeworks, and UnitingCare Health. Revenue is generated through competitive tendering and negotiated D&C contracts with prices not publicly disclosed; no standard pricing tiers, SaaS subscriptions, or recurring licenses are offered. The company is privately owned with no parent entity, no disclosed funding rounds, no subsidiaries beyond Stirloch Developments, and no patents or trademarks on record. Geographic reach is concentrated on Australia's East Coast, and the firm holds ISO 9001, ISO 14001, and ISO 45001 certifications displayed on its corporate website.

Name

Stirloch

Legal name

Stirloch Group

Website

https://stirloch.com.au

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

11–50 employees

Short description

Privately-owned Australian civil engineering and construction contractor founded in 1997, delivering design-and-construct water, wastewater, and infrastructure projects for government utilities and private clients across Australia's East Coast.

Ownership category

akta.pro rank

Product category

Civil Engineering & Construction

NAICS

Water and Sewer Line and Related Structures Construction (23711), Other Heavy and Civil Engineering Construction (237990), Heavy and Civil Engineering Construction (237)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600), Pumps & Pumping Equipment (3561)

akta.pro primary industry

Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE)

akta.pro secondary industries

Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE), Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

Keywords

• Civil engineering construction
• Water infrastructure projects
• Wastewater treatment plants
• Hydraulic engineering design
• Commercial property development

Headquarters

HQ city

Traralgon

HQ country

Australia

HQ region

Oceania

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Civil Engineering & Construction Projects: Stirloch generates revenue through design-and-construct contracts and civil engineering construction projects for water/wastewater infrastructure, power industry, industrial works, and pipelines. Projects include both public sector (government utilities) and private sector clients throughout Australia.
2. Commercial Property Development: Stirloch Developments delivers architecturally designed purpose-built facilities for both public and private sector clients, including office solutions with energy efficiency and environmental considerations.
3. Asset Management Services: The group provides ongoing asset management services as part of its diversified engineering service offering.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Stirloch is a civil engineering and construction contractor that delivers design-and-construct infrastructure projects for water and wastewater treatment, pipelines, reservoirs, pump stations, power industry facilities, industrial works, and commercial property development. The group serves government water utilities, state and federal agencies, local councils, and private sector clients across Australia's East Coast through offices in Victoria and Queensland, supported by an in-house Design Group providing civil, structural, and hydraulic engineering design.

Product overview

Stirloch is a civil engineering and construction company offering a unified portfolio of infrastructure services. The core offerings include Water & Waste Water Services (treatment plant design, construction, and upgrades), Civil Engineering & Construction (pipelines, reservoirs, pump stations), Commercial Property Development, and Design Group services (civil, structural, hydraulic design). These services are delivered as an integrated offering, with the Design Group providing in-house engineering capabilities that support the construction and development divisions, enabling the company to offer design-to-completion project delivery for water/wastewater infrastructure, industrial facilities, and commercial properties.

Differentiator

Problem solved

Functional benefit

Brands

• Stirloch Developments: Delivers architecturally designed purpose built facilities for both public and private sector clients.

Products and services

• Water & Waste Water Services Design, construction, and upgrade of water and wastewater treatment plants, including treatment processes, sludge management, and chemical dosing systems, delivered to government water utilities and private sector clients across Australia's East Coast.
• Civil Engineering & Construction Delivery of complex civil engineering infrastructure projects including pipelines, reservoirs, pump stations, and civil, mechanical, and electrical works for public and private sector clients.
• Commercial Property Development Architecturally designed purpose-built facilities for public and private sector clients, including energy-efficient and environmentally friendly office solutions (Green Star rated).
• Design Group Services Innovative civil, structural, and hydraulic engineering design solutions for the water and wastewater industry, commercial, and industrial sectors, providing in-house design support to Stirloch's construction and development divisions.
• Asset Management Services Ongoing asset management services provided to clients as part of the group's diversified engineering service offering following project handover.

Named customers31 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

Feature1 record

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• McConnell Dowell: Australian-founded civil contractor with deep water infrastructure capability (treatment plants, pipelines, pump stations). Direct competitor in D&C water tenders across Australia and Asia-Pacific.
• Abergeldie Complex Infrastructure: Australian privately owned civil contractor specializing in water and wastewater infrastructure, pipelines, and treatment plants. Closest scale and business-model peer to Stirloch, with similar D&C delivery and government utility client base.
• Seymour Whyte: Australian civil contractor (now part of VINCI) delivering water, utilities, and infrastructure projects with design-and-construct capability. Competes with Stirloch on QLD and regional infrastructure tenders.
• Fulton Hogan: Large Australasian civil contractor delivering water, wastewater, and roading infrastructure for government utilities. Directly comparable to Stirloch's water/wastewater D&C model, and notably also appears in Stirloch's customer list as a collaborator on civil projects.
• John Holland: Tier-one Australian contractor with a dedicated water business delivering treatment plants, pipelines, and pump stations via D&C. Competes directly with Stirloch for utility framework agreements in Victoria, Queensland, and beyond.
• BMD Group: Privately held Queensland-based civil contractor with strong water and urban development capability. Highly comparable to Stirloch's ownership structure, regional Queensland focus, and water infrastructure service offering.
• Downer EDI: ASX-listed major Australian contractor with extensive water and wastewater treatment plant construction capability, including design-and-construct delivery for utilities like Seqwater, Sydney Water, and Melbourne Water. Directly competes with Stirloch on the same tenders in VIC and QLD.
• Comdain Infrastructure: Mid-sized Australian contractor focused on water, wastewater, and gas infrastructure for utilities. Closely comparable to Stirloch in scale, private ownership, and D&C delivery model.
• CPB Contractors (CIMIC Group): Major Australian tier-one contractor delivering water infrastructure, pipelines, and treatment plants under EPC and D&C models. Direct competitor for large government water utility tenders across Australia.

Broad incumbents

• Lendlease Engineering: Major Australian diversified contractor with civil engineering capability overlapping Stirloch's water and infrastructure work, though operating at much larger scale across property, construction, and infrastructure globally.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 Stirloch