35 Years of Engineering Excellence

Building
South Africa's
Future.

Since 1991, Unicon Construction has been more than a heavy civil engineering firm. Operating across key regions like KwaZulu-Natal (Durban, Hilton) and Gauteng (Johannesburg), we are a dedicated team building the critical infrastructure, water networks, and communities that move our nation forward.

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CIDB 7CE

National Grading

Level 2

B-BBEE Contributor

92

Projects Delivered

35

Years Executing

R1.5B+

Delivered Value

CIDB 7CE

National Grading

Every project since 1991 is listed in our public project database

Who We Build For

Trusted With Critical Infrastructure.

Anglo American Nestlé SA KZN Department of Transport UGU District Municipality Umgeni Water Mangosuthu University Coega Development Agency Ezemvelo KZN Wildlife

15

separate contracts awarded to us by UGU District Municipality alone.

Repeat appointments are the measure we pay most attention to. Clients who have seen how we run a site come back — and in bulk water, where a leak is a failure, that is the reference that matters.

Contracts awarded, by client

  • UGU District Municipality 15 contracts
  • KZN Department of Transport 7 contracts
  • Umgeni Water Board 5 contracts
  • uThukela Water Board 5 contracts
  • KZN Public Works 4 contracts
  • uMzinyathi District Municipality 4 contracts

Signature Works

Recent Flagships.

All 92 projects
Reinforced concrete dome roof under construction on a circular water reservoir Bulk Water

2016 · Anglo American

Thabazimbi 10ML Reservoir

Post-tensioned walls and a free-spanning dome roof with no column supports.

Concrete pour for the reedbed wastewater treatment works at Club Med Tinley Manor Wastewater

2024 · Club Med resort development

Tinley Manor WWTW

New wastewater treatment works for the Club Med resort at Ballito.

Tower crane and scaffolding over the Invesco Centre construction site, Pietermaritzburg Commercial

2008 · Invesco (Pty) Ltd

Invesco Shopping Mall

17,000 m² over three storeys, with basement parking and all concrete structural works.

Our Heritage

35 Years of
Grounded
Execution.

We did not achieve three and a half decades of sustained growth by accident. We achieved it through uncompromising quality, hard work in hostile terrains, and fiercely protecting the men and women on our sites.

Read Our Full History
'91

Humble Beginnings to Heavy Civils

Founded by Tony Nott in 1991, our very first projects were deeply rooted in rural KwaZulu-Natal. By building desperately needed government clinics and educational campuses, we established a foundational commitment to community upliftment and zero-failure execution.

As our operational capacity grew, so did the scale of our impact. We transitioned into complex municipal infrastructure—dominating the sector in multi-span provincial bridges, highway embankments, and massive cut-to-fill earthworks utilizing our own internal plant fleet.

Unicon Earthworks 1991

Securing Water for Millions

Today, Unicon is widely recognized across Southern Africa as a premier contractor for liquid-retaining structures. We execute massive 40-megalitre (40,000,000 liters) post-tensioned concrete reservoirs and highly complex wastewater treatment plants.

These mega-structures require absolute mastery of structural engineering. Our proprietary cast-in tie systems and advanced concrete shuttering techniques guarantee zero-leakage tolerances—securing clean, safe water for generations to come.

Water Reservoir Build

The Turnkey Integration

Recognizing the inherent delays in traditional construction models, we brought architectural and engineering design in-house. This allowed us to pioneer Design & Build (Turnkey) solutions for commercial and agricultural developers.

By integrating our structural engineers with our site agents from day one, we eliminate technical friction. Every blueprint is rigorously tested for real-world constructability before our heavy machinery even arrives on site.

Core Disciplines

Sectors We Serve

Bulk Water

49 projects delivered

Execution of 40ML+ reservoirs, treatment plants, and cross-border supply networks.

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Heavy Civils

9 projects delivered

River bridges, highway culverts, and massive cut-to-fill platform terracing operations.

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Turnkey Building

27 projects delivered

Design and construction of multi-story retail centres, medical suites, and industrial warehousing.

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Agricultural EPC

6 projects delivered

Intensive animal rearing systems, automated mega-dairies, and food-grade processing plants.

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From the Field

Engineering Insights.

All insights

Bulk Water · 12 August 2026

What a Water Treatment Works Upgrade Actually Involves

Abstraction, flocculation, clarification, filtration and storage, and what changes when the plant must keep supplying a town while you rebuild it.

Read the report

Water Engineering · 24 June 2026

The Critical Role of 40ML Reservoirs in African Water Security

An in-depth look at the engineering requirements and post-tensioning techniques necessary to construct zero-leakage bulk water storage in hostile topographies.

Read the report

Powered by People.

Our workforce is our foundation. We deploy dynamic engineering teams that prioritize absolute safety, continuous upskilling, and local community empowerment on every site.

Meet the Workforce Read Our Core Ethos

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