15 Largest Construction Companies in South Africa: Powerful Leaders Driving Growth

South Africa’s construction industry is anchored by five JSE-listed contractors and ten established private groups, spanning building, civil engineering, roads, and mining services across the SADC region. WBHO leads the sector with revenue of R28.5 billion for the year to June 2025, in a market employing over 1.3 million people. This ranking of South Africa’s largest construction companies draws on audited JSE financial statements, CIDB grading data, and verified company records.

Technical Snapshot: South Africa Construction Market at a Glance

Together, these fifteen contractors deliver the roads, bridges, hospitals, and renewable energy plants underpinning the most formalised construction market in Sub-Saharan Africa.

Introduction: South Africa’s Construction Industry Leaders

South Africa runs the most developed contracting market south of the Sahara, built on JSE listings, statutory grading, and disclosed financial reporting that most neighbouring markets still lack. Ranked by revenue, order book, and CIDB grading, the country’s biggest contractors in South Africa also rank among the most transparent construction businesses on the continent. The sector remains a major employer even through a difficult decade, with Statistics South Africa’s latest industry data putting construction employment above 1.3 million.

That formality sits alongside real strain: Basil Read and Group Five were liquidated in 2018 and 2019, and Murray & Roberts Holdings, once the sector’s flagship, delisted from the JSE in January 2026 after its operating subsidiary entered business rescue. What remains is a leaner group of South African construction industry leaders carrying the country’s infrastructure programme.

Many of the country’s most active names are also among the best-known construction companies in Johannesburg and the wider Gauteng region, from WBHO’s Sandton head office to the East Rand industrial belt around Germiston and Boksburg, though the ranking itself spans every province and several neighbouring countries. This piece sits alongside Construction Frontier’s ranking of the world’s biggest contractors and our wider ranking of the largest construction companies in Africa, and profiles the fifteen largest construction companies in South Africa doing that work today, from JSE-listed civils majors to employee-owned regional specialists.

How These South African Construction Companies Were Ranked

Four criteria were used to decide placement among the top construction firms in South Africa: audited or credibly reported revenue, JSE market capitalisation where applicable, CIDB grading (the statutory ceiling on tenderable work value), and confirmed project scale. Where a company discloses audited figures, revenue sets the ranking directly; the ten privately held contractors were assessed on CIDB Grade 9 status, workforce, and project portfolios, since most do not publish turnover.

Companies that ceased trading or exited the JSE before this ranking was compiled, including Murray & Roberts, Basil Read, and Group Five, were excluded even where legacy data might once have placed them among the largest. Their exit is central to the next section, on why South Africa’s market is shedding weak balance sheets faster than its regional peers.

The 15 Largest Construction Companies in South Africa

Table: South Africa’s 15 Largest Construction Companies at a Glance

JSE-Listed Construction Majors

Four of South Africa’s JSE-listed construction companies carry the sector’s most transparent numbers, publishing audited annual results under full JSE Main Board Listings Requirements; a fifth, Esor, is listed on the smaller AltX board and profiled in the private-contractor tier below, given its scale. That transparency also shows the market’s stress fastest: Aveng’s revenue has contracted for two consecutive years, and Stefanutti Stocks trades well below its listing-day market capitalisation.

1. WBHO (Wilson Bayly Holmes-Ovcon)

• Founded: 1970 by John Wilson and Brian Holmes
• Website: wbho.co.za
• JSE: WBO; major shareholders include the Government Employees’ Pension Fund, Ninety One, and Old Mutual
• FY2025 revenue: R28.5 billion (year to 30 June 2025), up 4%
• Workforce: approximately 9,500
• Divisions: Building and Civil Engineering, Roads and Earthworks, Construction Materials, plus UK subsidiaries, the Byrne Group and Russell WBHO
• Major projects: Cape Town Stadium, Moses Mabhida Stadium, King Shaka International Airport, the Gauteng Freeway Improvement Project

WBHO is South Africa’s largest construction company by revenue, running Building and Civil Engineering, Roads and Earthworks, and Construction Materials divisions across South Africa, Botswana, Mozambique, Ghana, and the UK. Its audited FY2025 order book grew 23% to R37.6 billion, driven by activity in South Africa, strong growth from the two large West African projects in Ghana and Liberia, and a recovering Byrne Group and Russell WBHO order book in the UK. 

Its resilience through the collapse of Murray & Roberts and the sustained contraction at Aveng has left WBHO with an outsized share of the country’s largest public infrastructure tenders, and its major shareholder base of local pension and asset management funds gives it unusually stable, long-term capital backing for a construction stock.

2. Aveng

• Founded: 1880 as Anglovaal Engineering
• Website: aveng.co.za
• JSE: AEG; headquartered in Boksburg, listed reference AEG
• FY2026 revenue: R26.4 billion (A$2.3 billion, year to 30 June 2026)
• Workforce: approximately 4,700
• Segments: Infrastructure (McConnell Dowell, Australia/NZ/Southeast Asia), Building (Built Environs), Mining (Moolmans)
• Major projects: infrastructure delivery via McConnell Dowell in Australia and New Zealand, contract mining via Moolmans in South Africa

Aveng’s revenue base now sits overwhelmingly offshore through McConnell Dowell, with its FY2026 results showing its domestic footprint running mainly through Moolmans’ opencast contract mining rather than general building work. The group narrowed sharply after selling Aveng Trident Steel in 2022 and now trades under three brands: McConnell Dowell for infrastructure, Built Environs for building, and Moolmans for mining. Revenue fell 13.9% in FY2025 and continued contracting into FY2026, a pattern driven largely by softer Australian infrastructure conditions and cost overruns on legacy projects such as J108 and Kidston rather than domestic South African weakness, and the group has swung between operating losses and modest recoveries over the past two reporting periods.

3. Raubex

• Founded: 1974; JSE: RBX, listed March 2007
• Website: raubex.com
• FY2026 revenue: R22.05 billion (year to 28 February 2026), up 4.6%
• Workforce: over 7,000
• Subsidiaries: Raubex Infra, Raubex Building, Raudev, EMPA Structures, Westforce (Western Australia), Bauba Resources
• Major projects: SANRAL national road contracts, the completed Beitbridge Border Post upgrade, and multiple renewable energy contracts

Raubex diversified deliberately into materials supply, mining, and renewable energy alongside its core roads business, insulating earnings from any single division’s downturn, and its FY2026 results confirm operations across South Africa, Namibia, Botswana, Zambia, Mozambique, Cameroon, and Western Australia. Under CEO Felicia Msiza, the group now reports across five segments, with its Materials Handling and Mining division, anchored by Bauba Resources, delivering a marked turnaround from an operating loss the previous year to a solid profit. Its renewable energy contracts have become a standout growth line, with roughly R2.1 billion in new secured wind and solar work added in the most recent reporting period, while its Roads and Earthworks division continues to benefit from full-capacity SANRAL road contracts.

4. Stefanutti Stocks

• Multidisciplinary group; JSE: SSK
• Website: stefanuttistocks.com
• FY2025 revenue: R7.68 billion (year to 28 February 2025), up 8.2%
• Workforce: over 6,300
• Divisions: building, civils, roads and earthworks, mining services, marine construction, mechanical and electrical
• Major projects: Bank of Botswana redevelopment, the Manzini Interchange in Eswatini, VBC Energy Towers in Maputo

Stefanutti Stocks spans building, civils, roads, mining services, and marine construction, holding a CIDB Grade 9 rating for unlimited tender capability across its full service range. Its regional order book across Botswana, Eswatini, and Mozambique has underpinned its recovery from earlier balance sheet strain, and its market capitalisation has more than doubled over the past year, even though it still trades well below its listing-day valuation. The group’s multidisciplinary structure, spanning open-pit contract mining, industrial and petrochemical plant construction, and bulk pipeline work, has made it one of the few South African contractors able to bid competitively across nearly every construction sub-sector.

Established Private Contractors

Below the JSE tier sits a group of contractors that, collectively, employ more people than the listed majors, most without public financial disclosure. Several are structured around broad-based Black economic empowerment ownership, distinguishing this tier from the JSE-listed names. One member of this tier, Esor, is itself JSE-listed on the smaller AltX board rather than the main board, giving it lighter disclosure obligations than WBHO, Aveng, Raubex, or Stefanutti Stocks.

5. Concor

• Founded: 1948, tracing engineering roots to 1902 via Murray & Roberts Construction
• Website: concor.co.za
• Privately held, acquired by Southern Palace Group in 2017; Level 1 B-BBEE, black women-owned
• Workforce: over 3,400
• Divisions: infrastructure, building, opencast mining, property development
• Major projects: the Gautrain, the Huguenot Tunnel, the Bloukrans Bridge, the Braamhoek/Bedford dams for the Ingula Pumped Storage Scheme, the Msikaba River Bridge under construction

Concor spun out of the former Murray & Roberts Construction business and rebranded as an independent, Black women-owned group after its 2017 acquisition by a Black investment consortium. Its 120-year project history spans some of South Africa’s most recognisable structures, from the Carlton Centre and ABSA Towers to Melrose Arch and Menlyn Shopping Centre, and its current order book includes the cable-stayed Msikaba River Bridge near Lusikisiki, one of the largest bridge projects underway on the continent. Concor’s opencast mining division and property development arm give it a broader earnings base than most of its private peers, insulating it from downturns in any single construction sub-sector.

6. Power Group

• Founded: 1983 by Graham Power
• Website: powergrp.co.za
• Privately held, family- and employee-owned, with roughly 30% staff ownership
• Estimated revenue: in the region of R7 billion
• Workforce: approximately 1,600
• Subsidiaries: Power Construction, Power Development, Power-Oyeno (Namibia)
• Major projects: the Nxuba, Karusa, Amakhala, Gibson, and Hopefield wind farms; Thesen Islands, Knysna; the 800-unit Forest Village residential development, Cape Town

Power Group is regularly cited as South Africa’s largest privately owned civil engineering and property development business, operating from regional offices in Cape Town, Gqeberha, and Centurion, with a 49%-held Namibian joint venture, Power-Oyeno, based in Swakopmund. Founded by Graham Power with a single second-hand bakkie and three casual labourers, the group has grown into a diversified civil, building, and property developer with an employee share ownership scheme covering roughly a third of the company. Its repeated wind farm contracts across the Eastern and Western Cape have made renewable energy construction a defining part of its order book as South Africa’s energy transition accelerates, alongside its long-running RDP and subsidy housing delivery work.

7. Haw & Inglis

• Founded: 1984 in the Western Cape
• Website: haw-inglis.co.za
• Privately held, fully employee-owned through a shareholder scheme open to all permanent staff
• Divisions: Roads & Earthworks, Building, Water, Plant, Crushing
• Major projects: the Hilton Hotel Cape Town, the Silikamva School, the Robinson Dry Dock upgrade at the Port of Cape Town

Haw & Inglis built its reputation on national and provincial road construction and rehabilitation, backed by in-house rock-crushing and concrete divisions that supply its own roadworks with aggregate rather than relying on third-party suppliers. Its full employee ownership model, unusual among contractors of its size, has been credited with strong staff retention through cyclical downturns in the roads sector, and the group has expanded its market focus in recent years to include select SADC countries alongside its core Western Cape and national arterial road works.

8. Motheo Construction Group

• Founded: 1997 by Dr Thandi Ndlovu
• Website: motheogroup.co.za
• Privately held, 35% Black female-owned, Level 1 B-BBEE
• Divisions: Motheo Construction, Motheo Civils, Motheo Water, Motheo Electrical, Motheo Academy
• Major projects: large-scale social and subsidised housing, civil infrastructure, water, and electrical works nationally

Motheo grew from a small housing contractor into one of South Africa’s most prominent Black-owned construction groups and remains a leading delivery partner for government-subsidised social housing, a sector that carries steadier public demand than commercial building through downturns. Founded by the late Dr Thandi Ndlovu, a physician-turned-businesswoman and founding member of South African Women in Construction, the group has since branched into civil, water infrastructure, and electrical works and trains its own artisans and site professionals through its in-house Motheo Academy rather than relying solely on external hiring.

9. Esor

• Founded: 1946, headquartered in Germiston
• Website: esor.co.za
• JSE: ESR (AltX-listed), a subsidiary of Geomer Investments; CIDB Grade 9 rated (9CE & 9GB)
• FY2025 revenue: approximately R1 billion
• Workforce: over 400
• Divisions: Esor Civil Engineering & Building, Esor Geotechnical, Esor Infrastructure, Esor Pipelines, Esor Pipe Services, Esor Africa
• Major projects: piling and geotechnical works for Rand Water, De Beers, China Jiangsu International, and Exxaro Coal; underground facilities and services piping at the Kusile power station; the Western and Northern Aqueducts

Esor is the smallest of South Africa’s JSE-listed construction companies, trading on the AltX board rather than the JSE Main Board, which gives it lighter disclosure obligations than the four Main Board majors, even though it still publishes twice-yearly SENS results. It built its position around specialist geotechnical engineering and piling work, including pipe and bridge jacking and lateral support, rather than general building, a niche that keeps it in demand for foundation packages on larger infrastructure projects run by other contractors on this list. Esor also runs a development arm, Esor Developments, delivering low-income and gap-market housing under South Africa’s FLISP and RDP/BNG programmes and operates a Zimbabwean subsidiary, Esor Zimbabwe, formerly Zimfranki Projects.

Further Reading: 12 Largest Construction Companies in Egypt: Leading Firms Driving Success

Regional Southern Africa Players

The final tier covers Southern African infrastructure firms whose scale is regional rather than national, several with cross-border footprints into Namibia, Lesotho, or Eswatini, and whose CIDB Grade 9 status gives them unlimited tender capability without a JSE-listed balance sheet.

10. GVK-Siya Zama

• Founded: Roots trace to 1960
• Website: siyazama.co.za
• Privately held, 51% black-owned, Level 1 B-BBEE; CIDB Level 9 GB: PE and 8 CE: PE
• Major projects: the Cape Station high-rise student accommodation redevelopment, the One&Only Cape Town refurbishment, Sipetu District Hospital in rural Eastern Cape, University of Stellenbosch framework agreement projects

GVK-Siya Zama describes itself as one of the largest privately owned national construction companies in South Africa, and its CIDB Level 9 GB: PE and 8 CE: PE gradings place it among the small group of private contractors cleared for unlimited-value general building and near-unlimited civil engineering work. Its portfolio leans heavily on education, healthcare, judicial, and hospitality-sector buildings, sectors that carry steadier public and institutional demand than commercial property, and it holds ISO 9001, ISO 14001, and ISO 45001 certification across its quality, environmental, and safety management systems.

11. CSV Construction

• Founded: 1994 in Somerset West, Western Cape, by Alex von Klopmann, John Cullum, and Johan Scriven
• Website: csvconstruction.co.za
• Workforce: approximately 440
• Focus: civil and concrete works, renewable energy, building projects
• Major projects: the Calvinia water treatment plant, a low-lift sewer pump station in Retreat, a 500-bed student residence at the University of Cape Town, the Msenge Emoyeni Wind Farm near Bedford, Eastern Cape

CSV Construction has expanded from a Western Cape civil engineering specialist, launched by three Stellenbosch University engineering graduates, into microtunnelling, shoring, and alternative energy work, and now runs a second office in Windhoek to serve the Namibian market. Its renewable energy portfolio includes the Msenge Emoyeni Wind Farm, the first privately financed wind farm in South Africa to reach financial close and enter construction, and its client list, spanning the universities of Cape Town and Stellenbosch, Shoprite Checkers, and Rand Water-linked municipal work, reflects a deliberate mix of institutional and private-sector contracts.

12. Isipani Construction

• Founded: 1960
• Website: isipani.co.za
• Privately held; headquartered in Paarl, Western Cape
• Workforce: 200-500
• Focus: commercial, retail, industrial, government, and large residential buildings, plus property development

Isipani operates as both a building contractor and a property developer, a dual model less common among the larger names on this list, and has built a regional presence through commercial and retail development work across the Western Cape, including the Woodstock Quarter mixed-use development in Cape Town and a 34,000 sqm distribution centre for the Ackermans Group. With more than six decades of operation, the company positions itself as a contractor of choice for repeat institutional and retail clients rather than chasing one-off public tenders.

13. Trencon Construction

• Website: trencon.co.za
• Privately held; headquartered in Edenvale, Gauteng
• Focus: general building and civil engineering, including industrial developments, office blocks, shopping centres, parkades, airports, schools, and civil infrastructure such as stadia and bridges

Trencon’s broad project range, spanning airports, schools, parkades, and stadium infrastructure alongside conventional commercial buildings, has positioned it as one of the established construction companies in Johannesburg’s eastern metro, serving Gauteng’s dense commercial and institutional construction market from its Edenvale base. Its ability to move between building and civil engineering scopes on the same contract gives it flexibility that more narrowly specialised regional contractors on this list lack.

14. WK Construction

• Founded: more than 60 years ago in Cape Town, originally as WJM Construction, and renamed WK Construction in 1993
• Website: wkc.co.za
• Privately held; multi-disciplinary civil and building contractor

WK Construction has operated as an independent building and civil engineering contractor for over six decades, gaining a reputation throughout the SADC region and playing a role in the construction of South Africa’s railways, roads, and pipelines. Today, it is regarded as one of the largest independent civil engineering contractors in Southern Africa, with a portfolio built primarily around Western Cape commercial and institutional work alongside its broader regional infrastructure track record.

15. ELB Engineering Services

• Founded: 1903 as Edward L Bateman Ltd, by Edward L Bateman, who emigrated from the United States
• Website: elbengineering.co.za
• Privately held; part of the ELB Group, which also includes ELB Equipment
• Focus: materials handling, industrial construction, and engineered technology solutions for the mining, power, port, and industrial sectors

ELB brings over a century of engineering heritage to South Africa’s industrial construction segment, having grown from an equipment agency selling Allis-Chalmers mining machinery into a total engineered-solutions provider through technology partnerships with FAM of Germany and THOR of Canada, among others. Its materials handling infrastructure, spanning conveyor systems, stockyard equipment, and port loading facilities, underpins mining and power sector projects delivered by several other contractors on this list, rather than competing directly for general building or civil works. ELB’s turnkey EPCM capability, refined on projects including the reinstatement of Mozambique’s Matola Port terminal, has kept it relevant even as commodity cycles shift, and specific minerals drive demand for its equipment.

Why South Africa’s Market Is More Formalised Than Its Peers

South Africa’s construction sector operates under a statutory grading and disclosure regime that most African markets have not adopted, a gap that shows clearly against Nigeria and Egypt, the two other major markets Construction Frontier has ranked in this series, and against East and North African markets such as Kenya’s top construction companies and Morocco’s contractors.

The Construction Industry Development Board Act of 2000 created a national register that every contractor bidding on public work must join, with grading tied to audited financial capacity and verified track record. No equivalent body exists in Nigeria, where the largest firms in Nigeria’s construction sector are ranked largely on self-reported turnover. Egypt sits between the two: Egypt’s largest contractors include Orascom Construction, a genuinely global operator, but the tier below remains dominated by state-linked entities that disclose far less. 

Kenya and Morocco fall closer to the Nigerian pattern than the South African one: Kenya’s National Construction Authority grades contractors but does not compel the financial disclosure a JSE or AltX listing requires, and Morocco’s largest builders remain almost entirely private or state-adjacent, without a stock exchange tier comparable to South Africa’s four Main Board construction majors.

Table: Statutory Contractor Formalisation Across African Construction Markets

A CIDB Grade 9 rating and JSE Listings Requirements compliance both carry legal consequences for misrepresentation that have no real equivalent across most of the rest of the continent.

Further Reading: 15 Largest Construction Companies in Nigeria: Powerful Firms Fuelling Growth

Challenges Facing South Africa’s Largest Contractors

South Africa’s biggest contractors are absorbing structural pressure that has already forced two former sector leaders into liquidation and a third off the JSE entirely.

1. Power Supply Constraints

Load shedding and grid capacity constraints add cost and schedule risk to every large project, pushing contractors, including Raubex and Power Group, deeper into renewable energy construction as both a hedge against the constraint and a new revenue line. Diesel backup, standby generation, and revised project programming have become standard cost lines on tenders that would not have carried them a decade ago.

2. Municipal Payment Delays

Municipal payment delays remain a persistent drag on cash flow, particularly for contractors carrying large public infrastructure and social housing order books, where extended debtor days can strain balance sheets that are already thin relative to project value. This pressure falls hardest on the private contractors in this list, several of which lack the working capital buffers that JSE-listed balance sheets provide.

3. Competition From Regional Expansion

Regional expansion adds a third pressure: as South African firms chase growth in Namibia, Botswana, and Mozambique, they increasingly compete with each other, and with local entrants, for the same cross-border tenders that once offered an easier growth path than the saturated domestic market. That crowding has begun to compress margins on cross-border contracts that were, until recently, a reliable source of growth outside South Africa’s own constrained public tender pipeline.

Listed vs. Private: How South Africa’s Top Contractors Differ

The line between South Africa’s four Main Board-listed contractors and its ten privately held peers, plus Esor’s lighter-touch AltX listing, shapes how each group raises capital, reports performance, and is governed.

1. Capital Access

Listed contractors can raise equity directly from public markets and use listed share capital as acquisition currency, an option unavailable to private peers, who rely on retained earnings, bank facilities, and, in several cases, Broad-Based Black Economic Empowerment (B-BBEE) consortium funding structured at acquisition.

2. Governance

Listed status brings mandatory board independence requirements, audit committee oversight, and King IV governance code compliance, obligations that apply in full only to WBHO, Aveng, Raubex, and Stefanutti Stocks on this list. Private contractors set their own standards, though several, including Motheo and GVK-Siya Zama, have voluntarily adopted Level 1 B-BBEE structures carrying their own disclosure requirements.

3. Reporting

JSE Listings Requirements force twice-yearly audited disclosure down to divisional revenue and margin, information this article draws on directly for its top four rankings. Privately held contractors disclose far less, so rankings below the JSE tier rely on CIDB grading, workforce, and project portfolios rather than audited turnover.

Conclusion: South Africa’s Contractors Set the Region’s Governance Benchmark

South Africa’s construction sector has shed weight rather than grown it over the past two years, with Murray & Roberts’ JSE exit in January 2026 following the earlier collapses of Basil Read and Group Five. What remains is a smaller, more disciplined group of top construction firms in South Africa, operating under the continent’s most rigorous statutory grading, with four also carrying full JSE disclosure obligations.

That discipline distinguishes South Africa’s largest construction companies from their counterparts elsewhere on the continent: a CIDB Grade 9 rating and a JSE listing both carry verifiable, legally enforceable meaning, giving clients and investors counterparty certainty that remains rare across African construction markets. As the National Treasury’s infrastructure programme pushes further public and blended-finance capital into roads, water, and energy projects, the contractors on this list, formal, graded, and increasingly diversified into renewables, are positioned to absorb that work more reliably than the market structures found across most of Sub-Saharan Africa.

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