Subterra Civil

What Subterra Civil does

Subterra Civil is a privately held Australian civil construction and excavation specialist, founded in 2015 by Christopher Noone and Patrick Joyce and headquartered in Padstow, New South Wales. The company delivers stormwater drainage installation, box culvert construction, bulk and detail earthworks, FRP (formwork, reinforcement, concrete pouring) works, utilities installation (ITS conduits, LV/HV wiring, street lighting), and wet-hire plant and labour — operating exclusively as a subcontractor to Tier 1 and Tier 2 civil contractors across NSW, including on marquee infrastructure programs such as Western Sydney Airport, Sydney Metro Northwest, the Northern Road upgrade, and the M12 West motorway.

The company owns and operates a substantial in-house fleet of excavators ranging from 5T to 55T plus support plant (compressors, rollers, backhoes, tipper trucks), and deploys GPS-modelled excavation techniques and CCTV drainage inspection as part of its technical offering. It holds TFNSW Registered Contractor status, JAS-ANZ accreditation, IMS certification, and Civil Contractors Federation membership, which together function as gating qualifications for state infrastructure bids.

Revenue is generated entirely through project-based subcontracts with no publicly disclosed pricing or retainer arrangements. Go-to-market is direct enterprise field sales — engagement is initiated via online enquiry or phone, followed by tailored proposals aligned to specific project scopes. The business has no app, API, public revenue disclosure, or external funding on record; ownership remains concentrated with the two co-founders.

Name

Subterra Civil

Legal name

Subterra Civil

Website

https://stcivil.com.au

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Civil Construction Services

NAICS

Water and Sewer Line and Related Structures Construction (237110), Site Preparation Contractors (23891), Other Heavy and Civil Engineering Construction (237990)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Construction - Special Trade Contractors (1700)

akta.pro primary industry

Trenching & Utility Excavation (IMAFAKAD)

akta.pro secondary industries

Underground Downspout Drain Lines (Installation, Cleaning & Repair) (HSAIAKAG), Right-of-way access, foundations & civil works for T&D projects (EUADAKAJ)

Keywords

• Civil construction services
• Stormwater drainage installation
• Excavation and earthworks
• Plant and labour hire
• Infrastructure subcontracting

Headquarters

HQ city

Grange

HQ country

Australia

HQ region

Oceania

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Civil Construction Services: Subterra provides specialized civil construction services including stormwater drainage installation, FRP works, box culverts, utilities, and bulk earthworks as a subcontractor to Tier 1 and Tier 2 contractors. Revenue is generated through project-based contracts.
2. Plant and Labour Hire: Wet hire of plant equipment (excavators, trucks, rollers) and skilled labour to construction projects. Equipment rental with operators for civil works including stormwater pipes, pits, and sewer installations.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Subterra Civil is a civil and excavation specialist subcontractor providing stormwater drainage installation, box culverts, FRP works, bulk and detail earthworks, utilities, plant and labour hire, and CCTV inspection services. The company delivers these services primarily to Tier 1 and Tier 2 contractors on major infrastructure projects across NSW including airports, motorways, metro systems, and urban development. Revenue is generated through project-based contracts and wet hire of owned plant equipment with operators.

Product overview

Subterra Civil is a civil and excavation specialist company offering a comprehensive suite of underground infrastructure services. The core service offerings include Stormwater Drainage installation, Box Culverts, Bulk & Detail Earthworks, FRP Works (Formwork, Reinforcement, Pouring), Utilities (ITS/electrical/street lighting conduits), Plant & Labour Hire, and CCTV Inspection. These services are delivered primarily to Tier 1 and Tier 2 contractors throughout NSW for major infrastructure projects including airports, motorways, and urban development.

Differentiator

Problem solved

Functional benefit

Products and services

• Stormwater Drainage Specialized stormwater drainage system installation including subsoil drainage, reinforced concrete pipes from 375mm to 1800mm diameter, precast pits, and oil interceptor tanks. Delivered to Tier 1 and Tier 2 civil contractors on major infrastructure projects across NSW.
• Box Culverts Installation of box culverts for road crossings, waterways, flood prone areas, underground service housing, underpasses, bridges, tunnels, storage and drainage systems.
• Bulk & Detail Earthworks Detailed and bulk excavation services using a fleet of excavators operated by specialist operators, with GPS modelling for accuracy to reduce over-excavation and select materials, delivered from scope to handover.
• FRP Works Formwork, Reinforcement and Concrete Pouring services including core walling, high strutting formwork, shoring, piling, column reinforcement, suspended slabs, ground slabs, ramp and crossover construction.
• Utilities Installation of ITS conduits, high voltage electrical wiring, street lighting, and other conduit types for safe and efficient project delivery.
• Plant & Labour Hire Wet hire of construction plant equipment including excavators (5-55 tonne), compressors, rollers, backhoes, tipper trucks, and plant trailer combinations, along with skilled labour hire.
• CCTV Inspection CCTV camera inspections for civil infrastructure projects to assess condition and identify issues in drainage systems.

Named customers6 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Ten partnerships are on record, tiered minor and core.

• WestConnexminorOthersWestConnex is a major motorway project in Sydney. Subterra Civil works on WestConnex projects as a subcontractor providing civil construction services.
• AccionacoreOthersAcciona is a major global construction and infrastructure group. Subterra Civil has been engaged as subcontractor on multiple projects including Western Sydney Airport (with CPB) and The Northern Road Stage 3 (with Lend Lease).
• BMDcoreOthersBMD Constructions is a major Australian civil engineering contractor. Subterra Civil was engaged by BMD to complete the stormwater package on WSIA Apron Civil project and is part of the Aerowest JV with Seymour Whyte for WSIA Landside works.
• Fulton HoganminorOthersFulton Hogan is a major Australasian civil construction company. Subterra Civil has worked as a subcontractor on Fulton Hogan projects.
• John HollandminorOthersJohn Holland is a leading Australian engineering and infrastructure company. Subterra Civil has worked as a subcontractor on John Holland projects.
• CPB ContractorscoreOthersCPB Contractors is a major Australian construction company. Subterra Civil was engaged by CPB Contractors and Acciona for Western Sydney Airport bulk earthworks and drainage works.
• Daracon GroupcoreOthersDaracon is a major civil engineering contractor in NSW. Subterra Civil carried out stormwater drainage works on Sydney Metro Northwest project for Daracon.
• GeorgiouminorOthersGeorgiou is a major Australian building and civil construction company. Subterra Civil has worked as a subcontractor on Georgiou projects.
• Seymour WhytecoreOthersSeymour Whyte Constructions is a major Australian civil engineering contractor. Subterra Civil is part of the Aerowest JV (Seymour Whyte and BMD) for WSIA Landside Civil & Building Works project.
• Lend LeasecoreOthersLend Lease (now Lendlease) is a major Australian property and infrastructure group. Subterra Civil worked on Oxley Highway to Kundabung project and The Northern Road Stage 3 project for Lend Lease Engineering.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Abergeldie Complex Infrastructure: NSW-headquartered civil contractor delivering water, stormwater, and underground infrastructure services. Comparable in stormwater drainage focus and Tier 1 subcontractor relationships across Sydney infrastructure.
• Mainland Civil: NSW-based civil construction firm providing drainage, earthworks, and FRP works to infrastructure primes. Highly comparable in service mix and geographic focus to Subterra.
• Statewide Civil: NSW-based civil construction subcontractor focused on stormwater drainage, earthworks, and concrete works. Closely comparable in scope, geography, and Tier 1/Tier 2 subcontractor positioning to Subterra.
• Ertech Group: Australian civil contractor delivering earthworks, drainage, utilities, and concrete works as a subcontractor to Tier 1 primes. Comparable in service mix (drainage + utilities + earthworks) and Tier 1 engagement model across major infrastructure.
• Robore Group: NSW-based civil and infrastructure contractor providing earthworks, drainage, and utilities services. Directly comparable as a specialist civil subcontractor on similar Tier 1 infrastructure projects.
• Haslin Constructions: An NSW-based civil contractor specialising in drainage, earthworks, and concrete works for infrastructure projects. Directly comparable as a specialist subcontractor serving Tier 1 primes on NSW infrastructure scopes similar to Subterra's.
• Allroads Civil: Australian civil contractor providing earthworks, drainage, and road infrastructure services. Comparable in core civil scope and subcontractor delivery model for major infrastructure projects.

Broad incumbents

• BMD Constructions: Major Australian civil contractor and one of Subterra's Tier 1 clients. Comparable as an incumbent in the same NSW infrastructure market but operates at prime-contractor scale rather than as a specialist subcontractor.
• Downer EDI: Large Australian infrastructure group operating across roads, utilities, and civil construction. Comparable as a major player that both self-performs and subcontracts drainage/earthworks packages similar to Subterra's scope, but at much greater scale.
• John Holland: Leading Australian engineering and infrastructure contractor and a listed Subterra client. Comparable as a major prime that subcontracts drainage and earthworks packages similar to those Subterra delivers, but at full-project scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xlinkedin.com/company/subterra-pty-ltd
• YouTubeyoutube.com/watch?v=plDn5CQTGv8
• Facebookfacebook.com/SubterraCivil
• LinkedInlinkedin.com/company/subterra-pty-ltd
• Instagraminstagram.com/subterra_civil

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Subterra Civil