Company lists · Data refreshed September 2026

Top 25 Infrastructure consulting firms based in Johannesburg, South Africa

Name: Infrastructure consulting firms based in Johannesburg, South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 156 companies tracked

RevenueBase identified 156 infrastructure consulting firms headquartered in Johannesburg, South Africa as of September 2026 and tracks 3,192 professional contacts across them, including 1,000 with verified work emails. Johannesburg is the largest hub.

This list covers infrastructure consulting firms headquartered in Johannesburg, South Africa, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

156Companies

3,192Contacts tracked

1,000Verified emails

Unlock all 156 companies Free signup · no credit card · 500 free credits

The 25 largest infrastructure consulting firms based in Johannesburg, South Africa

Ranked by team size

Top 25 of 156 infrastructure consulting firms based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	WSP In AfricaIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	501-1,000	638
	“We are one of the world’s leading professional services firms, uniting our engineering, advisory and science-based expertise to shape communities to advance humanity.” Source: company website · checked Sep 3, 2026
2	Temi ConstructionIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	201-500	146
	“Temi Construction was established in 2010 as a fully functional civil engineering and construction firm.” Source: company website · checked Sep 3, 2026
3	Veritas Engineering And Project Management ConsultantsIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	201-500	101
	“VERITAS Engineering was founded on the premise of supporting our Client’s in meeting their business growth objectives.” Source: company website · checked Sep 3, 2026
4	Henry Fagan Consulting Engineers & Project ManagersPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	51-200	100
	“At Henry Fagan Consulting Engineers & Project Managers, we are a 100% black-owned, design-focused firm with over 40 years of experience delivering innovative, sustainable, and…” Source: company website · checked Sep 3, 2026
5	LEOKAIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	51-200	51
	“We offer expertise in multi-disciplinary engineering, project management and advisory services.” Source: company website · checked Sep 3, 2026
6	Maziya General Services CCIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	46
	Source: company website · checked Sep 3, 2026
7	Mamadi And Company SA PTY LTDPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	35
	“Mamadi and Company SA Provides End to End Solutions within Engineering and Environmental, Infrastructure Development, Air Quality management services within the private and Public…” Source: company website · checked Sep 3, 2026
8	Syncsystems South AfricaIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	34
	“SyncSystems is owned by professional engineers with broad industrial experience, including mining, petrochem, biotech and water treatment.” Source: company website · checked Sep 3, 2026
9	Venn Milford IncorporatedPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	51-200	31
	“Since 1947, we have built a reputation as cutting-edge visionaries who deliver quality multi-disciplinary projects and consulting services to clients in the mining, engineering…” Source: company website · checked Sep 3, 2026
10	TechaccessIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	31
	“TechAccess is a services and solutions orientated company in the IT sector with a strong focus on the data centre industry.” Source: company website · checked Sep 3, 2026
11	L&s Consulting PTY LTDPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	51-200	26
	“L&S Consulting (Pty) Ltd is involved in Structural and Civil Consulting Engineering, mainly for the private sector for industrial, retail and office developments.” Source: company website · checked Sep 3, 2026
12	Resultant Consulting EngineersPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	1-10	21
	“Resultant Consulting Engineers is a dynamic engineering firm specialising in structural design in the mining and heavy industrial sectors.” Source: company website · checked Sep 3, 2026
13	Calliper PTY LTDPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	20
	“Calliper is a South Africa–headquartered infrastructure development firm delivering high-impact projects across the African continent.” Source: company website · checked Sep 3, 2026
14	OptimultPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	18
	“Optimult provides Consulting, EPC (Engineering, Procurement, Construction) and EPCM (Engineering, Procurement and Construction Management) services in a comprehensive range of…” Source: company website · checked Sep 3, 2026
15	ADA Consulting EngineersPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	18
	“ADA Consulting Engineers offers professional consulting engineering services to clients in the development of industrial, commercial and public projects in the civil and…” Source: company website · checked Sep 3, 2026
16	AvenirholdingsPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	17
	“AvenirHoldings is a group of businesses whose business is to provide innovative and leading solutions in the delivery of infrastructure and ‘built’ projects.” Source: company website · checked Sep 3, 2026
17	Innovation ExpandIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	15
	“We are a technically-led and solutions-orientated consultancy and we strive to empower you in the rapidly evolving world of electrical engineering.” Source: company website · checked Sep 3, 2026
18	Dhahabu ConsultingPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	15
	“Dhahabu Consulting (Pty) continuously works to being the partner, service provider and employer of choice offering customised project management, project controls (quantity…” Source: company website · checked Sep 3, 2026
19	Lamela Consulting PTY LTDStrong evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	1-10	14
	“Lamela is a professional infrastructure services consulting firm with a proven and distinct expertise in structural, civil, mining, rehabilitation and Infrastructure design.” Source: company website · checked Sep 3, 2026
20	Nsovo Environmental ConsultingPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	13
	“Our specialist area of focus is the assessment of multifaceted projects, including the establishment of linear developments, bulk infrastructure, power generation and…” Source: company website · checked Sep 3, 2026
21	Projectized Management PTY LTDIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	13
	“We believe in the power of possibility to change businesses and our world.” Source: company website · checked Sep 3, 2026
22	Beyond Infradev PTY LTDIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	13
	“Beyond Infradev (Pty) Ltd is a multi-disciplinary engineering and consultancy firm offering turnkey/EPC (Engineering, Procurement & Construction) life-cycle services for…” Source: company website · checked Sep 3, 2026
23	JIM Porter Mining Consulting Jpmc SAIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	1-10	11
	“JPMC is a specialist consultancy for scalable mining and process strategies.” Source: company website · checked Sep 3, 2026
24	Projects And Industrial EngineeringPartial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	11
	“Projects & Industrial Engineering is an ISO 9001:2008 accredited professional South African multidisciplinary consulting engineering, design and project Management Company.” Source: company website · checked Sep 3, 2026
25	KolekoIndirect evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	1-10	11
	“Koleko provides comprehensive traffic engineering, transportation and town planning services to all spheres of government and private organisations.” Source: company website · checked Sep 3, 2026

Showing 25 of 156 infrastructure consulting firms based in Johannesburg, South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,000 reachable decision-makers.

Free signup · no credit card

See all 156 companies

Infrastructure consulting firms based in Johannesburg, South Africa at a glance

As of Sep 3, 2026

1-10Median size (employees)

JohannesburgLargest hub · 156 HQs

Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole South Africa list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Johannesburg, over 156 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Johannesburg, South Africa whose own description of what they do matches “infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Johannesburg are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,000 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 3, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Infrastructure consulting firms by metro in South Africa

Infrastructure consulting firms in Johannesburg156
Infrastructure consulting firms in Pretoria81
Infrastructure consulting firms in Cape Town75
Infrastructure consulting firms in Durban45
Infrastructure consulting firms in Centurion31
Infrastructure consulting firms in City Of Tshwane31
Infrastructure consulting firms in Midrand30
Infrastructure consulting firms in Sandton29

Frequently asked

How many infrastructure consulting firms are there based in Johannesburg, South Africa?

RevenueBase identified 156 infrastructure consulting firms headquartered in Johannesburg, South Africa as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

WSP In Africa, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most infrastructure consulting firms?

Johannesburg leads with 156 headquartered companies, followed by Pretoria (81) and Cape Town (75).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,000 verified decision-maker contacts tracked across these 156 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 2026.

Ready to reach these companies? Verified emails and direct dials for all 156 infrastructure consulting firms based in Johannesburg, South Africa. Start with a free account, no credit card.

Get the full list

Related lists

Infrastructure consulting firms by geography

Browse the directory

Browse: Companies home · Infrastructure consulting firms in South Africa · All South Africa lists · All Infrastructure consulting firms lists · New lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.