Delivering civil infrastructure for Territorian conditions

Sage Civil Pty Ltd are a Darwin-based civil construction company delivering road, drainage and subdivision infrastructure across the Top End.

Our Services

  • We deliver construction and rehabilitation of sealed and unsealed roads across rural and urban areas. Experience includes subdivision roadworks, access roads, internal roads for public facilities and intersection upgrades under live traffic. Works are staged to maintain access, manage safety and ensure pavement performance in Territory conditions. 

  • We deliver bulk earthworks packages for infrastructure and development projects, including detailed trimming and formation works to specification. Our in-house plant fleet supports efficient cut-to-fill operations, compaction control and material handling across multiple concurrent work fronts. 

  • We construct integrated drainage systems essential to long-term road and subdivision performance. Our works include reinforced concrete box culverts, stormwater pipes and pits, floodways and open drainage systems. Drainage sequencing and environmental controls are planned to maintain site stability during wet season conditions. 

  • Our capability extends to specialised pavement construction and rehabilitation works requiring controlled compaction, material compliance and specification-driven delivery. These works demand precision, quality assurance and disciplined site management. 

  • We deliver full civil packages for subdivisions and public infrastructure, including works in operational sites such as schools and emergency services. Our approach integrates traffic management, staging and coordination to minimise disruption while maintaining safety and compliance. 

Construction vehicles working on a dirt road construction site in a wooded area.
A worker operating a small green front loader is dumping soil or debris into the back of a white truck with a blue and orange logo. The truck has advertising for landscape material supplies.

Who are we?

Operating from our Pinelands facility, we deliver high-quality civil infrastructure across Greater Darwin for government, commercial and private clients.

As a majority Indigenous and female owned, family operated business certified by NTIBN and Supply Nation, all of our people, plant and operations are Territory based. With our own Shoal Bay quarry and a strong local network, we provide reliable, efficient project delivery built for local conditions.

A construction site with a yellow excavator and a white Mack truck on reddish dirt, with trees and a partly cloudy sky in the background.
Four icons with text descriptions about Northern Territory-based workforce, subcontractors, dispatch, and quarry operation.
Icons and text describing project features: a cement mixer truck icon with 'Rapid mobilisation capability,' a person with a gear icon and 'Centralised project management and contract administration,' a lock icon with 'Secure storage and maintenance of plant and equipment,' and a CAL logo with 'CAL accredited for civil works up to $5 million.'
  • Former Projects

    Kiss and Go Carpark - Driver

    Construction of new Kiss and go Carpark at Driver Primary School. Works include Civil Earthworks, Road Pavements, Concrete Works, Drainage and Traffic Management.

  • Former Projects

    Peter McAulay Centre - Design and Construct Carpark Extension

    Upgrading and extending of staff car parking facilities at the front of the Peter McAulay Centre with additional bays (design and construct), to improve the car parking facilities, traffic management flow and overall road safety.

  • Former Projects

    Kiss and Go Carpark - Bakewell

    Construction of new Kiss and go Carpark at Driver Primary School. Works include Civil Earthworks, Road Pavements, Concrete Works, Drainage and Traffic Management.

  • Former Projects

    Kurrajong Subdivision Stages 3–5 - Humpty Doo

    This project demonstrates Sage Civil’s capability in road construction, shoulder reformation, culvert installation, drainage works, pavement construction, traffic management, and environmental controls.

Memberships & Accreditations

Logo of the Civil Contractors Federation featuring gear graphics and the initials 'CCF'.
Logo with black circle, white border, orange outlines, and the words 'BLEX Business' and 'NTIB Certified Member' encircling a stylized black and orange checkmark.
Logo with a stylized mountain peak and the words 'Accreditation Limited'
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Supply Nation Certified logo with red background and white abstract design.