DM Civil
DM Civil is a privately held Western Australian civil construction contractor (founded 1976, 101–250 employees) delivering water, gas, wastewater, mining, and land-development infrastructure as a Tier 1 Water Corporation-accredited panel contractor.
- Company typePrivate
- Founded1976
- HeadquartersMaddington, Australia
- Headcount101–250
- GTM typeB2B
- OfferingServices
What DM Civil does
DM Civil is a privately held Western Australian civil construction contractor founded in 1976 by Reg Toohey, Tony Spanjers, and Eric Spanjers, headquartered in Maddington/Perth with a workshop depot and 101–250 employees. The company delivers turnkey pipeline and civil infrastructure across nine core service lines: water pipelines, oil/gas/energy pipelines, wastewater pipelines, trencher hire, trenchless technology, HDPE plastic welding, concrete construction, mining infrastructure, and land development. Its specialised technical capabilities include trenchless pipe installation (DN150–DN1600) introduced in 1982, HDPE butt-welded pipelines up to DN1200 and electrofusion welding, and ownership of Tesmec TRS1475 and TRS1300 trenching rock saws and Tecnodue 500/630 Bushranger welding machines. The company is a Tier 1 Water Corporation accredited contractor and registered Critical Services Panel member, holds AS/NZS 4801, ISO 9001:2015, and ISO 14001:2015 certifications, and has achieved Platinum WorkSafe certification and multiple consecutive CCF safety awards.
DM Civil serves three primary customer segments — mining clients (Alcoa, Chevron, Ertech), municipal authorities (Water Corporation, LandCorp/Development WA, Rottnest Island Authority, Department of Communities), and private developers (Peet, Coogee Chemicals) — across Western Australia from the Perth metropolitan area to remote sites including Esperance, Kununurra, Albany, and the Tanami Desert in the Northern Territory. The business model is project-based B2B contracting: projects are scoped and quoted individually rather than sold on disclosed pricing tiers, with revenue generated through competitive tendering and direct enterprise engagement. Long-tenured client relationships — notably 35+ projects for Alcoa since 1985 and Tier 1 panel status with Water Corporation — provide a recurring base, supplemented by repeat mandates with ATCO Gas and APA Group (including turnkey gas pipeline and metering station work via the Qetra joint venture). Go-to-market is direct enterprise field sales with no resellers, supported by an in-house owned plant fleet and a directly employed multi-skilled workforce trained in HDPE welding, trenchless installation, and rock-saw trenching.
Management transitioned in 2014 when founders Reg Toohey and Tony Spanjers moved to Chairman roles and Jason Toohey and Stephen Hall became joint Managing Directors; in February 2025 the company added Jae Teakle as HSEQ Manager and Scott Burnett as Human Resources Manager, both bringing Tier 1 multinational and national mining/contracting experience, indicating a continuing professionalisation push. The company remains family-controlled, with no disclosed external investment, private equity backing, or M&A activity.
DM Civil firmographics
Firmographics- Name
- DM Civil
- Legal name
- DM Civil
- Website
- https://dmcivil.com.au
- Company type
- Private
- Founded year
- 1976
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- DM Civil is a privately held Western Australian civil construction contractor (founded 1976, 101–250 employees) delivering water, gas, wastewater, mining, and land-development infrastructure as a Tier 1 Water Corporation-accredited panel contractor.
- Ownership category
- akta.pro rank
DM Civil industry classification
Industry- Product category
- Civil Construction Services
- NAICS
- Heavy and Civil Engineering Construction (237), Water and Sewer Line and Related Structures Construction (237110), Water and Sewer Line and Related Structures Construction (23711), Land Subdivision (23721)
- SIC
- Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)
- akta.pro primary industry
- Mine Construction & Development Contracting (Shaft Sinking, Tunneling, Pre-Strip, Civil Works) (IMAKAKAG)
- akta.pro secondary industry
- Balance-of-Plant (BOP) & Civil Works for Power Plants (EUAEAAAL)
Keywords
Where DM Civil is headquartered
LocationHeadquarters
- HQ city
- Maddington
- HQ country
- Australia
- HQ region
- Oceania
Offices2 records
Markets served
DM Civil business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Infrastructure, Operations, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Civil Construction Services: Project-based civil construction contracts delivering pipeline infrastructure, trenchless technology, concrete construction, mining infrastructure, and land development services to government and private clients
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
DM Civil product offering
Product offeringCore offering
DM Civil is a privately owned Western Australian civil construction contractor that delivers pipeline and infrastructure projects for water, oil/gas/energy, wastewater, mining, and land development sectors. The company specialises in pipeline construction (water, gas, wastewater), trenchless technology installation, HDPE plastic welding, concrete construction, mining infrastructure, and residential/industrial land development civil works. It operates a directly employed multi-skilled workforce and owns specialised plant including Tesmec trenching rock saws and Tecnodue welding machines, executing project-based contracts across metropolitan Perth and remote regions of WA and the Northern Territory.
Product overview
DM Civil is a civil construction company offering a diverse range of integrated civil construction capabilities across Western Australia. The company's portfolio consists of nine core service offerings: Water Pipelines & Infrastructure, Oil, Gas & Energy Pipelines & Infrastructure, Wastewater Pipelines & Infrastructure, Trencher Hire Services, Trenchless Technology, HDPE Plastic Welding, Concrete Construction, Mining Infrastructure, and Land Development. These services are designed to work both independently and in combination, allowing DM Civil to deliver comprehensive turnkey civil construction solutions for projects ranging from municipal water infrastructure to mining developments.
Differentiator
Problem solved
Functional benefit
Products and services
- Water Pipelines & Infrastructure Civil construction services for water pipeline and infrastructure projects for government water utilities and municipal authorities, including pressure mains and water storage tanks.
- Oil, Gas & Energy Pipelines & Infrastructure High-pressure gas pipeline construction, relocation, and protection works to AS2885 standards for energy utilities such as ATCO Gas and APA Group, delivered in both metropolitan and remote settings.
- Wastewater Pipelines & Infrastructure Wastewater pipeline construction and infrastructure services for municipal authorities and water utilities, including gravity sewers, pumping stations, and emergency overflow storage.
- Trencher Hire Services Hire of DM Civil's trenching machines (including Tesmec rock saws) for cable, pipeline, and infrastructure trenching in varied ground conditions, offered to external clients in addition to internal projects.
- Trenchless Technology Trenchless pipe installation services (directional drilling and similar methods) for diameters from DN150 to DN1600 in all ground conditions, minimising community disruption in urban corridors and environmentally sensitive areas.
- HDPE Plastic Welding HDPE butt welding up to DN1200 and electrofusion welding for restricted-space water and gas connections, delivered as a Tier 1 Water Corporation accredited service to both internal projects and external clients.
- Concrete Construction Concrete construction services for stormwater, civil, and building projects, complementing DM Civil's earthworks and pipeline crews to deliver comprehensive turnkey solutions.
- Mining Infrastructure Turnkey mining infrastructure solutions for resource companies (e.g., Alcoa, Chevron), including trenching for cabling and pipelines, refinery civil works, and remote-site project delivery with owned plant and a directly employed workforce.
- Land Development Primary civil contractor for residential, commercial, and industrial land development projects, partnering with consulting engineers (e.g., Pritchard Francis, GHD) and developers (e.g., Peet) to deliver full-scope civil works for sustainable communities.
Quantifiable outcome
- Delivered Welshpool Station HP Gas Pipeline Relocation on time despite latent conditions and expanded scope
- +3 more outcomes
Companies that use DM Civil
Customer profileNamed customers9 records
Segments3 records
Ideal customer profiles4 records
DM Civil technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
DM Civil partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered core, major and minor.
- Water CorporationcoreTier 1 Water Corporation accredited contractor and registered Critical Services Panel member providing pipelines, plastic welding, trenchless construction and concrete construction services for potable water infrastructure
- Pritchard FranciscoreLong-standing consulting engineering partnership for land development projects including Tuckey Cove development
- Development WAcoreGovernment land development authority partner for sustainable community projects in Western Australia
- GHDmajorEngineering consultancy partnership for projects including Karratha remediation and various infrastructure developments
- AlcoacoreMajor mining client since 1985 with ongoing infrastructure works at Wagerup, Pinjarra, Kwinana refineries and Willowdale, Huntley, Arundel, Myara, McCoy, Marshall, Roberts mine sites - delivered over 35 projects
- JacobsmajorEngineering and technical consultancy services partner for infrastructure projects
- PeetmajorLand development company partnership for residential projects including Lakelands 1ML Ground Tank project
- TABECmajorTechnical and engineering consultancy partnership
- RIA (Rottnest Island Authority)majorGovernment authority partnership for Rottnest Island sewer infrastructure upgrades including North Thompson Sewer Pumping Station
- Coogee ChemicalsminorIndustrial chemical facility partner for civil infrastructure projects
- Atco GascoreMajor gas utility partner for high pressure gas pipeline construction, relocation and protection works to AS2885 standards including Welshpool Station, Kelmscott, Cockburn projects
- MonadelphousmajorEngineering and infrastructure services company partnership for mining and energy sector projects
- Department of CommunitiesmajorGovernment department partnership for community infrastructure projects
- Kier ContractingcoreHDD installation subcontractor for trenchless projects including Bullsbrook Wastewater Diversion - trusted from previous works for directional drilling installations
- Steel MainsmajorPipe supplier providing Sintakote MSCL pipe for Roleystone DN760 water main replacement with competitive pricing for best engineering solution
Scale indicators4 records
Recent moves7 records
Expansion highlights6 records
DM Civil competitors and assessment
Company assessmentBroad incumbents
- Perenti (formerly Ausdrill): ASX-listed mining services group providing drilling, contract mining, and infrastructure services. Comparable to DM Civil's mining infrastructure offering for hard-rock and remote WA sites.
- Monadelphous Group: Large ASX-listed engineering and infrastructure services group with significant WA mining and energy exposure. Competes with DM Civil for mining infrastructure and pipeline tenders at the upper end of project scale.
- Macmahon Holdings: ASX-listed mining services and infrastructure contractor with significant WA operations. Overlaps with DM Civil's mining infrastructure and civil construction services for major miners.
- Downer EDI: ASX-listed major infrastructure services provider with utilities, transport, and mining services divisions. Competes with DM Civil on water/wastewater and mining infrastructure projects nationally.
Others
- Steel Mains: Pipe supplier partner to DM Civil (Sintakote MSCL pipe for Roleystone DN760). Listed here as a key upstream supplier and ecosystem participant rather than a direct competitor.
Direct peers
- Valmec Limited: ASX-listed energy and infrastructure services contractor providing pipeline construction, civil works, and meter stations — overlapping with DM Civil's gas pipeline and mining infrastructure services.
- Ertech: Perth-based civil contractor offering pipeline, earthworks, and infrastructure services across WA — DM Civil's most direct head-to-head competitor in water, gas, and mining civils in the same geography and customer base.
- Spiecapag Australia: Pipeline construction specialist active in Australian oil & gas and water infrastructure markets, comparable to DM Civil's oil/gas/energy pipeline division.
- Rob Carr Pty Ltd: Australian trenchless technology and underground utilities specialist. Directly comparable to DM Civil's trenchless pipeline installation capability and similar water/sewer focus.
Regional players
- Force Solutions (formerly WBC Group): WA-based civil and structural contractor serving water, mining, and energy infrastructure clients in Western Australia — directly comparable geography and end-markets to DM Civil.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks7 records
Key highlights7 records
Customer concentration
DM Civil social profiles
Digital presenceDM Civil compliance and trust
Trust signalCompliance4 records
DM Civil financial estimates
Financial estimateRevenue estimate
Valuation estimate
DM Civil leadership team
Management profileNumber of profiles
Profiles10 records
DM Civil funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
DM Civil M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about DM Civil
What does DM Civil do?
DM Civil is a privately owned Western Australian civil construction contractor that delivers pipeline and infrastructure projects for water, oil/gas/energy, wastewater, mining, and land development sectors. The company specialises in pipeline construction (water, gas, wastewater), trenchless technology installation, HDPE plastic welding, concrete construction, mining infrastructure, and residential/industrial land development civil works. It operates a directly employed multi-skilled workforce and owns specialised plant including Tesmec trenching rock saws and Tecnodue welding machines, executing project-based contracts across metropolitan Perth and remote regions of WA and the Northern Territory.
Is DM Civil a public or private company?
DM Civil is a private company. It is classified as family owned and is currently operating.
When was DM Civil founded?
DM Civil was founded in 1976. It employs 101 to 250 people.
Where is DM Civil based?
DM Civil is headquartered in Maddington, Australia, in the Oceania region.
How does DM Civil make money?
One revenue line is on record: civil Construction Services.
Who are DM Civil's main competitors?
Broad incumbents on record are Perenti (formerly Ausdrill), Monadelphous Group, Macmahon Holdings and Downer EDI. Steel Mains is listed as an others. Direct peers are Valmec Limited, Ertech, Spiecapag Australia and Rob Carr Pty Ltd. Force Solutions (formerly WBC Group) is listed as a regional player.
Does DM Civil have an API?
No public API is recorded for DM Civil.
What industry is DM Civil in?
DM Civil's product category is Civil Construction Services. Its primary akta.pro industry code is IMAKAKAG, Mine Construction & Development Contracting (Shaft Sinking, Tunneling, Pre-Strip, Civil Works), with a secondary code of EUAEAAAL, Balance-of-Plant (BOP) & Civil Works for Power Plants. Its NAICS code is 237 and its SIC code is 1600.