Company lists · Data refreshed September 2026

Top 25 Site assessment companies based in South Africa

Name: Site assessment companies based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 115 companies tracked

RevenueBase identified 115 site assessment companies headquartered in South Africa as of September 2026 and tracks 1,031 professional contacts across them, including 380 with verified work emails. Johannesburg is the largest hub.

This list covers site assessment companies headquartered in 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

115Companies

1,031Contacts tracked

380Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest site assessment companies based in South Africa

Ranked by team size

Top 25 of 115 site assessment companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to site assessment companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Jones & Wagener PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	51-200	228 contacts →
	Indirect evidence “Jones & Wagener is a specialist firm of consulting engineers and scientists based in South Africa.” Source: RevenueBase Database · checked Sep 22, 2026
2	Soillab	Indirect evidence	Pretoria, South AfricaHQ checked Sep 22, 2026	201-500	77 contacts →
	Indirect evidence “The Soillab staff compliment includes Engineers, Technologists and Technicians, as well as skilled and semi-skilled operators.” Source: RevenueBase Database · checked Sep 22, 2026
3	Lukhozi Consulting Engineers PTY LTD	Indirect evidence	East London, South AfricaHQ checked Sep 22, 2026	51-200	69 contacts →
	Indirect evidence “Lukhozi Consulting Engineers (Pty) Ltd is a Level 1 B-BBEE contributor and a leading multi-disciplinary professional engineering consultancy that offers a professional service…” Source: RevenueBase Database · checked Sep 22, 2026
4	Geogroup	Indirect evidence	Sunrella, South AfricaHQ checked Sep 22, 2026	201-500	68 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
5	Geosure PTY LTD	Indirect evidence	Durban, South AfricaHQ checked Sep 22, 2026	51-200	57 contacts →
	Indirect evidence “Since the company's inception in 1992, Geosure has established a formidable reputation in Southern African Geotechnics.” Source: RevenueBase Database · checked Sep 22, 2026
6	Franki Africa PTY LTD	Indirect evidence	Ottery, South AfricaHQ checked Sep 22, 2026	51-200	37 contacts →
	Indirect evidence “Franki is the oldest and most established specialist geotechnical contractor in Sub-Saharan Africa.” Source: RevenueBase Database · checked Sep 22, 2026
7	Premier Mapping Africa	Indirect evidence	Cullinan, South AfricaHQ checked Sep 22, 2026	51-200	34 contacts →
	Indirect evidence “Our scope now includes the engineering, environmental and exploration sectors.” Source: RevenueBase Database · checked Sep 22, 2026
8	Labco Southern Africa PTY LTD	Indirect evidence	Port Elizabeth, South AfricaHQ checked Sep 22, 2026	201-500	32 contacts →
	Indirect evidence “Labco provides laboratory testing services in the environmental and civil engineering industries.” Source: RevenueBase Database · checked Sep 22, 2026
9	Sotiralis Consulting Engineers	Indirect evidence	Faerie Glen, South AfricaHQ checked Sep 22, 2026	11-50	28 contacts →
	Indirect evidence “About us: Sotiralis Consulting Engineers (Pty) Ltd was established in 2007 and is the successor of Sotiralis Consulting (Pty) Ltd (trading as Sotiralis & Associates since 1985).” Source: RevenueBase Database · checked Sep 22, 2026
10	Et-Global	Indirect evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “ET-Global is a specialised engineering technical services company servicing local and international mining and offshore industries.” Source: RevenueBase Database · checked Sep 22, 2026
11	Civilab PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	51-200	13 contacts →
	Indirect evidence “Civilab is one of the most technically advanced civil and mining engineering laboratories in South Africa.” Source: RevenueBase Database · checked Sep 22, 2026
12	Fairbrother Geotechnical Engineering	Indirect evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	51-200	10 contacts →
	Indirect evidence “Fairbrother Geotechnical Engineering is a leading South African geotechnical contractor delivering specialised ground engineering solutions to infrastructure, energy, commercial…” Source: RevenueBase Database · checked Sep 22, 2026
13	Groundwork Consulting	Indirect evidence	Sandton, South AfricaHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “Groundwork Consulting is a leading geotechnical consulting firm, harnessing cutting-edge technologies to provide innovative solutions for challenges in both the mining and civil…” Source: RevenueBase Database · checked Sep 22, 2026
14	Streng Consulting Engineers	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “STRENG Consult is a collaboration of team members with years of experience.” Source: RevenueBase Database · checked Sep 22, 2026
15	Urbanstrut Consulting Engineers	Indirect evidence	Sandton, South AfricaHQ checked Sep 22, 2026	1-10	10 contacts →
	Indirect evidence “Urbanstrut Consulting Engineers is a South African civil and structural engineering consultancy providing practical, technically sound engineering solutions for the built…” Source: RevenueBase Database · checked Sep 22, 2026
16	Thembakele Consulting Engineers	Indirect evidence	Roodepoort, South AfricaHQ checked Sep 22, 2026	11-50	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
17	Earthinv LAB	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 22, 2026	51-200	9 contacts →
	Indirect evidence “We specialise in the testing of construction materials for quality assurance and quality control purposes to our Clients.” Source: RevenueBase Database · checked Sep 22, 2026
18	Aqua Earth	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	11-50	8 contacts →
	Indirect evidence “Aqua Earth celebrates more than 20 years of operation and prides itself on having a dynamic team of specialists in Hydrogeology, also identified as Groundwater, as well as…” Source: RevenueBase Database · checked Sep 22, 2026
19	Global Laboratories & Risk Solutions	Indirect evidence	Nelspruit, South AfricaHQ checked Sep 22, 2026	51-200	8 contacts →
	Indirect evidence “Global Laboratories and Risk Solutions is based in South Africa and services the entire African continent.” Source: RevenueBase Database · checked Sep 22, 2026
20	BAV Consulting SA	Indirect evidence	Durban, South AfricaHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “We provide a reliable and efficient Geo-tech, Geo-hydrology, Survey, Civil Engineering and Project Management services to the engineering and sciences sectors for both private and…” Source: RevenueBase Database · checked Sep 22, 2026
21	Devcon Projects	Indirect evidence	Sandton, South AfricaHQ checked Sep 22, 2026	11-50	5 contacts →
	Indirect evidence “Welcome to Devcon Projects, your large-scale construction specialists.” Source: RevenueBase Database · checked Sep 22, 2026
22	JC Geotechnical Services PTY LTD	Indirect evidence	Randburg, South AfricaHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “Welcome to JCG – Your Trusted Geotechnical Solutions Partner Founded in 2005 as a passionate father-and-son venture, JCG has grown into a leading name in geotechnical solutions -…” Source: RevenueBase Database · checked Sep 22, 2026
23	Enginuity Consult Geotech, Civil & Structural Engineers	Indirect evidence	Sandton, South AfricaHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Enginuity Consult is a civil engineering consulting company that offers professional services in geotechnical, civil and structural engineering fields.” Source: RevenueBase Database · checked Sep 22, 2026
24	Risimati Consulting Engineers PTY LTD	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 22, 2026	11-50	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
25	Apex GEO Consultants PTY LTD	Indirect evidence	Durban, South AfricaHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “Apex is dedicated to high quality customer focused geotechnical engineering investigation, design and construction.” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: site assessment companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names site assessment companies.
Partial evidence: Its own public description names part of site assessment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name site assessment companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 115 site assessment companies based in South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 380 reachable decision-makers.

Free signup · no credit card

View the full list →

Site assessment companies based in South Africa at a glance

As of Sep 22, 2026

36.9%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

13.9%Largest-city concentration · Johannesburg

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 115 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 site assessment companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in South Africa whose own description of what they do matches “site assessment companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names site assessment companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among site assessment companies, and records with no verified work email. Companies headquartered outside South Africa 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 its RevenueBase Smart Search 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, 380 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 22, 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.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names site assessment companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many site assessment companies are there based in South Africa?

RevenueBase identified 115 site assessment companies headquartered in 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?

Jones & Wagener PTY LTD, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most site assessment companies?

Johannesburg leads with 16 headquartered companies, followed by Cape Town (8) and Pretoria (7).

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 380 verified decision-maker contacts tracked across these 115 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 115 site assessment companies based in South Africa. Start with a free account, no credit card.

Download this list →

Related lists

Site assessment companies by geography

Browse the directory

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 Smart Search, 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.