Company lists · Data refreshed September 2026

Top 25 Preconstruction services companies based in Türkiye

Name: Preconstruction services companies based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 459 companies tracked

RevenueBase identified 459 preconstruction services companies headquartered in Türkiye as of September 2026 and tracks 3,169 professional contacts across them, including 253 with verified work emails. Istanbul is the largest hub.

This list covers preconstruction services 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 17, 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 17, 2026 86% judged on-target in blind review

459Companies

3,169Contacts tracked

253Verified emails

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The 25 largest preconstruction services companies based in Türkiye

Ranked by team size

Top 25 of 459 preconstruction services companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to preconstruction services 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	Optimal Project Management	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	201-500	228 contacts →
	Indirect evidence “Construction Project Management Solutions” Source: RevenueBase Database · checked Sep 17, 2026
2	CAN İnşaat San. VE Tic. A.Ş	Indirect evidence	Kayseri̇, TürkiyeHQ checked Sep 17, 2026	201-500	93 contacts →
	Indirect evidence “Can İnşaat San.” Source: RevenueBase Database · checked Sep 17, 2026
3	Feka Construction	Indirect evidence	Izmir, TürkiyeHQ checked Sep 17, 2026	501-1,000	90 contacts →
	Indirect evidence “Founded in 1985 as a construction company to provide services in the whole range of General Contracting Industry, FEKA Construction Industry & Trade Inc.” Source: RevenueBase Database · checked Sep 17, 2026
4	Atak Engineering	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	501-1,000	75 contacts →
	Indirect evidence “Atak Engineering was founded in 1988.” Source: RevenueBase Database · checked Sep 17, 2026
5	Taşyapi İnşaat San. VE Ti̇c. A.Ş	Indirect evidence	Zuhuratbaba, TürkiyeHQ checked Sep 17, 2026	501-1,000	75 contacts →
	Indirect evidence “1980 yılında kurulan Taşyapı İnşaat, 40 yıldır kamu ve özel kuruluşların ihtiyaçlarına cevap vermektedir.” Source: RevenueBase Database · checked Sep 17, 2026
6	BCT Construction Architecture Engineering Consultancy Incorporated Company	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	51-200	74 contacts →
	Indirect evidence “Founded in 2004, BCT Architecture Engineering Consulting Company has established its local offices in different regions of Turkey in order to keep up with the demand from…” Source: RevenueBase Database · checked Sep 17, 2026
7	Konelsis Energy	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	201-500	64 contacts →
	Indirect evidence “Turnkey Construction & Electricity & Mechanical & Project & Manufacturing & Contracting Services” Source: RevenueBase Database · checked Sep 17, 2026
8	TIBA	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	51-200	61 contacts →
	Indirect evidence “TIBA is formed in 2005 to serve expanding needs of construction industry.” Source: RevenueBase Database · checked Sep 17, 2026
9	Poligon İnşaat Turizm Sanayi VE Ticaret A.Ş	Indirect evidence	Gaziantep, TürkiyeHQ checked Sep 17, 2026	501-1,000	52 contacts →
	Indirect evidence “Kurulduğu günden bu yana Sanko Holding bünyesindeki şirketler için; fizibilite, koordinasyon, proje hazırlama, inşaai yapım, bakım/onarım çalışmaları yürüten Poligon İnşaat…” Source: RevenueBase Database · checked Sep 17, 2026
10	Upend İnşaat VE Ti̇caret A.Ş	Indirect evidence	Beşiktaş, TürkiyeHQ checked Sep 17, 2026	11-50	50 contacts →
	Indirect evidence “Construction Company Contracting Company Industrial Construction Turk-Key Contractor EPC Contractor Engineering Procurement Construction Data Center Construction Data Center…” Source: RevenueBase Database · checked Sep 17, 2026
11	Procs Professional Construction Solutions	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	11-50	31 contacts →
	Indirect evidence “Unique Solutions for Each Client We offer broad range of professional services with our proven success in entire lifecycle of construction.” Source: RevenueBase Database · checked Sep 17, 2026
12	Gerber Yapı İnşaat A.Ş	Indirect evidence	Küçükçekmece, TürkiyeHQ checked Sep 17, 2026	201-500	30 contacts →
	Indirect evidence “Şirketimiz, 2013 yılında İstanbul’da kurulmuştur.” Source: RevenueBase Database · checked Sep 17, 2026
13	ÖZ Aras Grup İnşaat. Taah. San. VE Tic. A.Ş	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 17, 2026	501-1,000	23 contacts →
	Indirect evidence “Öz Aras Grup çevreye duyarlı, yenilikçi düşünce, proje ve maliyet yönetimi ile yüksek kaliteli iş sunmaya odaklı, inşaat hizmetleri veren bir liderdir.” Source: RevenueBase Database · checked Sep 17, 2026
14	ASL İnşaat	Indirect evidence	Eyup, TürkiyeHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “ASL İnşaat, çeyrek asırlık tecrübe ve bilgi birikimi ile konut, yol, köprü, havalimanı, enerji, muhtelif projeler ve kentsel altyapı konularında genel müteahhitlik ve taahhüt…” Source: RevenueBase Database · checked Sep 17, 2026
15	Efeoğlu	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	51-200	19 contacts →
	Indirect evidence “Efeoğlu; proje tasarım, inşaat, peyzaj, ruhsat ve iskan hizmetleriyle yapı sektöründe anahtar teslim proje konseptinin önde gelen markasıdır."” Source: RevenueBase Database · checked Sep 17, 2026
16	Dekon Construction	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	51-200	17 contacts →
	Indirect evidence “DEKON is an Istanbul, Turkey based international construction services company.” Source: RevenueBase Database · checked Sep 17, 2026
17	Dülger Teknoloji̇k İnşaat A.Ş	Indirect evidence	Izmir, TürkiyeHQ checked Sep 17, 2026	501-1,000	15 contacts →
	Indirect evidence “Engineered Architecture for Industry.” Source: RevenueBase Database · checked Sep 17, 2026
18	7 40 Construction And Contracting LLC	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “7/40 is a Contracting and Construction company that has been purposely established as the subsidiary of 2 Mimar to address the design and construction needs of U.S.” Source: RevenueBase Database · checked Sep 17, 2026
19	SEN Inşaat Proje Taah. Mad. VE Müh. Hiz. San. Tic. Ltd. ŞTI	Indirect evidence	Maltepe, TürkiyeHQ checked Sep 17, 2026	201-500	12 contacts →
	Indirect evidence “Sen inşaat yönetimindeki kişilerin her birinin 20 yılı aşkın süredir ve büyük projelerde yer almasının getirdiği iş tecrübesi ve tamamı teknik personelden oluşan kadrosu nedeniyle…” Source: RevenueBase Database · checked Sep 17, 2026
20	Yatkın Yapı Limited Şirketi	Indirect evidence	Uşak, TürkiyeHQ checked Sep 17, 2026	51-200	8 contacts →
	Indirect evidence “2013 yılında temelleri atılan YATKIN YAPI LİMİTED ŞİRKETİ, yapı projelendirme, danışmanlık ve taahhüt alanlarında faaliyet göstermektedir.” Source: RevenueBase Database · checked Sep 17, 2026
21	Mekan Proje VE İnşaat Ltd. ŞTI	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “1985'ten beri şirketimiz; mimari tasarım, uygulama, mesleki kontrolluk, müşavirlik ve inşaat hizmetleri ile çeşitli kamu kuruluşlarının, özel kuruluşların ve şahısların mekansal…” Source: RevenueBase Database · checked Sep 17, 2026
22	PUK & Partners	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Proje Yönetimi: Projenin başından sonuna kadar sürekli iletişim ve güçlü proje yönetimi.” Source: RevenueBase Database · checked Sep 17, 2026
23	İnfigo İnşaat Sanayi VE Ticaret Anonim Şirketi	Indirect evidence	Beşiktaş, TürkiyeHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “İnfigo İnşaat, mühendislik, tasarım ve uygulama konularında modern, yenilikçi, kolay uygulanabilir, güvenilir ve uzun ömürlü çözümler sunmak amacıyla Boğaziçi Üniversitesi İnşaat…” Source: RevenueBase Database · checked Sep 17, 2026
24	Arke Proje Yönetimi VE İnşaat Taahhüt A.Ş	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “ARKEYAPI 15 yılı aşkın süredir inşaat sektöründe yer alan, Türkiye genelinde irili ufaklı bir çok projeyi başarıyla tamamlamış uzman uygulama ekipleri ve deneyimli bir teknik…” Source: RevenueBase Database · checked Sep 17, 2026
25	HG Yapi Mühendi̇sli̇k	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Firmamızın uzmanlık alanı mühendislik ve müşavirlik hizmetleri üretmek olup, birçok kurumsal ve bireysel müşterimize çözüm ortağı olarak hizmet vermekteyiz.” Source: RevenueBase Database · checked Sep 17, 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: preconstruction services 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 preconstruction services companies.
Partial evidence: Its own public description names part of preconstruction services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name preconstruction services 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 459 preconstruction services companies based in Türkiye

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Preconstruction services companies based in Türkiye at a glance

As of Sep 17, 2026

8.0%Verified-email coverage

6.9Average contacts per company

11-50Median size (employees)

18.5%Largest-city concentration · Istanbul

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

220

11-50

137

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 459 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 preconstruction services 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 “preconstruction services 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 preconstruction services 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 preconstruction services 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, 253 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 17, 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.

Preconstruction services companies by metro

Preconstruction services companies in Istanbul85
Preconstruction services companies in Ankara37
Preconstruction services companies in Izmir29

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 preconstruction services 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 preconstruction services companies are there based in Türkiye?

RevenueBase identified 459 preconstruction services 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?

Optimal Project Management, headquartered in Istanbul, tops this list with the largest team on record.

Which city has the most preconstruction services companies?

Istanbul leads with 85 headquartered companies, followed by Ankara (37) and Izmir (29).

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 253 verified decision-maker contacts tracked across these 459 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 17, 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.