Company lists · Data refreshed September 2026

Top 25 Site investigation companies based in South Africa

RevenueBase identified 101 company matches for site investigation companies associated with South Africa as of September 2026 and tracks 766 professional contacts across them, including 191 with verified work emails. Johannesburg is the largest hub.

This list covers company matches for site investigation companies associated with South Africa, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 22, 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 RevenueBase SmartSearch · Exact Recorded Sep 22, 2026 How this list was built
101Companies
766Contacts tracked
191Verified emails
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The 25 largest site investigation companies based in South Africa

Ranked by team size
Top 25 of 101 company matches for site investigation companies based in South Africa, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSunrella, South AfricaHQ recorded Sep 22, 2026201-50068 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchDurban, South AfricaHQ recorded Sep 22, 202651-20057 contacts →

Exact match

“Since the company's inception in 1992, Geosure has established a formidable reputation in Southern African Geotechnics.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchPotchefstroom, South AfricaHQ recorded Sep 22, 202611-5047 contacts →

Exact match

“Open House Management Solutions is a South-African based, Geotechnical Engineering and Seismological services provider.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchOttery, South AfricaHQ recorded Sep 22, 202651-20037 contacts →

Exact match

“Franki is the oldest and most established specialist geotechnical contractor in Sub-Saharan Africa.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchCullinan, South AfricaHQ recorded Sep 22, 202651-20034 contacts →

Exact match

“Our scope now includes the engineering, environmental and exploration sectors.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchTembisa, South AfricaHQ recorded Sep 22, 2026201-50034 contacts →

Exact match

“Phoenecian Group is a dynamic demolition, civil, building and geotechnical contractor, with an unmatched track record in the private and public sector.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchSouth AfricaHQ recorded Sep 22, 202611-5030 contacts →

Exact match

“Project Management International (PMI) is a dynamic project management company specialising in tailor-made Marine Construction, Engineering Services and Survey & Site…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchDurban, South AfricaHQ recorded Sep 22, 202651-20022 contacts →

Exact match

“Soilco offers a wide range of soil and materials testing services through its KwaZulu-Natal locations in Westmead (Pinetown), Pietermaritzburg and Vryheid and provides civil…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchJohannesburg, South AfricaHQ recorded Sep 22, 202611-5022 contacts →

Exact match

“Rafuni offers Geotechnical, Geological and Environmental Consulting Services.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchCape Town, South AfricaHQ recorded Sep 22, 202611-5015 contacts →

Exact match

“ET-Global is a specialised engineering technical services company servicing local and international mining and offshore industries.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchJohannesburg, South AfricaHQ recorded Sep 22, 202651-20013 contacts →

Exact match

“Civilab is one of the most technically advanced civil and mining engineering laboratories in South Africa.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchCape Town, South AfricaHQ recorded Sep 22, 202651-20010 contacts →

Exact match

“Fairbrother Geotechnical Engineering is a leading South African geotechnical contractor delivering specialised ground engineering solutions to infrastructure, energy, commercial…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchSandton, South AfricaHQ recorded Sep 22, 202611-5010 contacts →

Exact match

“Groundwork Consulting is a leading geotechnical consulting firm, harnessing cutting-edge technologies to provide innovative solutions for challenges in both the mining and civil…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchDurban, South AfricaHQ recorded Sep 22, 202651-20010 contacts →

Exact match

“Mega Pile specialises in geotechnical investigations, piling and lateral support.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchCity Of Tshwane, South AfricaHQ recorded Sep 22, 202651-2009 contacts →

Exact match

“We specialise in the testing of construction materials for quality assurance and quality control purposes to our Clients.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchDurban, South AfricaHQ recorded Sep 22, 20261-106 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchCape Town, South AfricaHQ recorded Sep 22, 202611-504 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchRandburg, South AfricaHQ recorded Sep 22, 202611-504 contacts →

Exact match

“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 -…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchCape Town, South AfricaHQ recorded Sep 22, 20261-104 contacts →

Exact match

“Melis & Du Plessis Consulting Engineers have been in existence for 40 years, providing specialist consultancy services in the fields of Geotechnical Engineering and Engineering…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchMidrand, South AfricaHQ recorded Sep 22, 20261-104 contacts →

Exact match

“At PVR Engineering Surveyors, we pride ourselves on being a leading provider of precise and reliable data for construction and mining projects.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchPretoria, South AfricaHQ recorded Sep 22, 20261-103 contacts →

Exact match

“Lefatshe Minerals and Consulting (PTY)Ltd, is a 100% Black owned and managed diversified company and has completed successful projects (nationally and internationally) which…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchBordeaux, South AfricaHQ recorded Sep 22, 20261-103 contacts →

Exact match

“DMT Kai Batla is a South African based company, headquartered in Germany under the DMT group which occupies 30 offices worldwide.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchSandton, South AfricaHQ recorded Sep 22, 20261-103 contacts →

Exact match

“Enginuity Consult is a civil engineering consulting company that offers professional services in geotechnical, civil and structural engineering fields.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchSilvertondale, South AfricaHQ recorded Sep 22, 202611-502 contacts →

Exact match

“Soil & Groundwater Remediation Services (Pty) Ltd, better known as SGRS specialises in borehole drilling and soil probing for environmental and geotechnical investigations…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchDurban, South AfricaHQ recorded Sep 22, 20261-102 contacts →

Exact match

“Apex is dedicated to high quality customer focused geotechnical engineering investigation, design and construction.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 25 of 101 site investigation companies based in South Africa

See the full list, filter by size, metro and specialty, and access 191 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Site investigation companies based in South Africa at a glance

As of Sep 22, 2026
24.9%Verified-email coverage
7.6Average contacts per company
1-10Median size (employees)
14.9%Largest-city concentration · Johannesburg
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
55
11-50
26
51-200
13
201-500
7

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 101 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with South Africa whose business descriptions match “site investigation companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 191 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “site investigation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 101 company matches for site investigation companies associated with South Africa as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Geogroup tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most site investigation companies?

Johannesburg leads with 15 company records, followed by Cape Town (7) and Pretoria (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 191 professional contacts with verified work emails tracked across these 101 companies; direct dials are available where recorded.

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.

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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.