Company lists · Data refreshed September 2026

Top 19 Foundation engineering companies based in Türkiye

RevenueBase identified 148 foundation engineering companies headquartered in Türkiye as of September 2026 and tracks 1,195 professional contacts across them, including 97 with verified work emails. Istanbul is the largest hub.

This list covers foundation engineering companies headquartered in Türkiye, 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 16, 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 16, 2026 86% judged on-target in blind review
148Companies
1,195Contacts tracked
97Verified emails
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The 19 largest foundation engineering companies based in Türkiye

Ranked by team size
Top 19 of 148 foundation engineering companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to foundation engineering 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceBeşiktaş, TürkiyeHQ checked Sep 16, 2026201-500167 contacts →

Indirect evidence

“KASKTAŞ’ın doğuşu, 1957 yılında kurulan ve günümüzde dünyanın en büyük taahhüt firmaları arasında yer alan ENKA İnşaat ve Sanayi A.Ş.’ye dayanmaktadır.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidenceAnkara, TürkiyeHQ checked Sep 16, 2026501-1,000118 contacts →

Partial evidence

“IKSA Engineering Consultancy Construction Industry and Trade Inc; with its expert technical staff, numerous technological machinery and successfully concluded domestic and foreign…”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceIstanbul, TürkiyeHQ checked Sep 16, 202651-20052 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceAnkara, TürkiyeHQ checked Sep 16, 202611-5032 contacts →

Indirect evidence

“GeoDestek Zemar Ltd.”

Source: RevenueBase Database · checked Sep 16, 2026
5Strong evidenceKazan, TürkiyeHQ checked Sep 16, 2026201-50028 contacts →

Strong evidence

“SONAR provides Geotechnical Construction and Engineering Services; such as Deep Excavation and Retaining Systems, Deep Foundations, Ground Improvement, Cut-Off Walls, and Ground…”

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceAkaretler, TürkiyeHQ checked Sep 16, 202611-5024 contacts →

Partial evidence

“Erdemli Engineering and Consulting has a vivid experience of 50 years in the field of civil-structural design and is one of the pioneering Consulting – Engineering companies of…”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidenceFikirtepe, TürkiyeHQ checked Sep 16, 202611-5023 contacts →

Indirect evidence

“Yapı Teknik, established in Istanbul in 1988, specializes in the design and the construction management of all types of reinforced concrete, steel and timber structures.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceDilovası, TürkiyeHQ checked Sep 16, 202651-20019 contacts →

Indirect evidence

“Teknofor was established in and specializes about geotechnical and started to post tensioning work since 2009.”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceAnkara, TürkiyeHQ checked Sep 16, 202651-20017 contacts →

Partial evidence

“Post-Tensioning, Cable Stays, Bridges, Buildings, Structure, Tanks, Silos, Engineering, Construction, Consulting”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceAnkara, TürkiyeHQ checked Sep 16, 202611-5010 contacts →

Indirect evidence

“Deneyimli ve uzman kadrosuyla PROGEO Proje, Zemin ve Temel Mühendisliği (Geoteknik) alanlarında hizmet veren bir firmadır.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceGebze, TürkiyeHQ checked Sep 16, 202611-506 contacts →

Indirect evidence

“Piling & Ground Improvement Equipment Providers”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceIstanbul, TürkiyeHQ checked Sep 16, 20261-104 contacts →

Indirect evidence

“Arı Zemin Mühendislik İnşaat info@arizemin.com”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceÇekmeköy, TürkiyeHQ checked Sep 16, 20261-104 contacts →

Indirect evidence

“YApısal Tasarım Ofisi (YATO) YATO Mühendislik, inşaat mühendisliği ve yapı tasarımı konusunda 15 yılı aşan bir sürede toplanan teknik bilgi ve sürekli artmakta olan deneyimlerle…”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceÜsküdar, TürkiyeHQ checked Sep 16, 202651-2003 contacts →

Indirect evidence

“Perform Mühendislik & Müşavirlik”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceKağıthane, TürkiyeHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

“NOVA GEOTEKNİK - PROFESSIONAL SOLUTIONS Nova Geoteknik ensures that all the projects it serves are designed and constructed within the national and international standards.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceİzmit, TürkiyeHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

“GCO İnşaat Taahhüt ve Mühendislik Sanayi Ticaret Limited Şirketi İnşaat, Harita ve Jeofizik Mühendisliği tecrübesinin bir araya getirilmesiyle kurulmuş bir şirkettir.”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceİstanbul, TürkiyeHQ checked Sep 16, 202611-502 contacts →

Partial evidence

“DENGE was founded in and has grown to become one of Turkey’s leading engineering design & consultancy company, with delivering innovative construction projects design and…”

Source: RevenueBase Database · checked Sep 16, 2026
18Strong evidenceAnkara, TürkiyeHQ checked Sep 16, 20261-101 contacts →

Strong evidence

“Art GeoDesign is an engineering consultancy firm providing ground and foundation engineering services for civil engineering projects in Turkey, Eurasia and Middle East.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceAnkara, TürkiyeHQ checked Sep 16, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026

Showing 19 of 148 foundation engineering companies based in Türkiye

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Foundation engineering companies based in Türkiye at a glance

As of Sep 16, 2026
8.1%Verified-email coverage
8.1Average contacts per company
11-50Median size (employees)
22.3%Largest-city concentration · Istanbul
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
63
11-50
38
51-200
29
201-500
14
501-1,000
4

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 148 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 foundation engineering 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 Türkiye whose own description of what they do matches “foundation engineering 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 foundation engineering 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 foundation engineering companies, and records with no verified work email. Companies headquartered outside Türkiye 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, 97 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 16, 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.

Foundation engineering companies by metro

  • Foundation engineering companies in Istanbul33

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 foundation engineering 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 foundation engineering companies are there based in Türkiye?

RevenueBase identified 148 foundation engineering companies headquartered in Türkiye 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?

Kasktaş, headquartered in Besiktas, tops this list with the largest team on record.

Which city has the most foundation engineering companies?

Istanbul leads with 33 headquartered companies, followed by Ankara (22) and Cankaya (10).

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 97 verified decision-maker contacts tracked across these 148 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 16, 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 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.