Company lists · Data refreshed November 2026

Top 11 Integrated facilities solutions providers based in Istanbul, Türkiye

RevenueBase identified 214 company matches for integrated facilities solutions providers associated with Istanbul, Türkiye as of November 2026 and tracks 5,797 professional contacts across them, including 628 with verified work emails. Across Türkiye, Istanbul is the largest hub for this category.

This list covers company matches for integrated facilities solutions providers associated with Istanbul, Türkiye, 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 November 6, 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 Nov 6, 2026 How this list was built
214Companies
5,797Contacts tracked
628Verified emails
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The 11 largest integrated facilities solutions providers based in Istanbul, Türkiye

Ranked by team size
Top 11 of 214 company matches for integrated facilities solutions providers based in Istanbul, Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchIstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,000462 contacts →

Exact match

“1998 yılında kurulan Teknoser, günümüzde bilgi ve iletişim teknolojileri pazarının önde gelen sistem entegrasyon ve saha hizmetleri firmasıdır.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20261,001-5,000282 contacts →

Exact match

“BİRLEŞİM MÜHENDİSLİK established in year 2002, in İSTANBUL and achieved its present structure with the vast acceleration parallel to the present technologies and sector…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026n/a267 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20265,001-10,000261 contacts →

Exact match

“Klüh Service Management 1911 yılında küçük bir cam temizleme şirketi olarak Almanya Düsseldorf’da kurulmuştur.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-50090 contacts →

Exact match

“IST Systems, İstanbul Yeni Havalimanı için ICT altyapı, havacılık sistemleri tasarımı ve uygulanması amacıyla 2018 yılında kuruldu.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“TBI - Telemobil provides its customers value added “IT solutions”, “Electrical Contracting” and “Building Automation” to increase their productivity and competitive advantage.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20265,001-10,00068 contacts →

Exact match

“KSK GRUP is leading provider of integrated Facilities Management Services, serving in Turkey & Kuwait regions for over decade.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-20042 contacts →

Exact match

“NetCore Bilişim, müşterilerine yüksek teknoloji bileşenleri kullanarak, konularında uzman kadrosu ile sektörde bilişim alanında ilerlemeyi hedefleyen kurumların bilgi ve iletişim…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Coretek Bilgi Teknolojileri, müşterilerine yüksek teknoloji bileşenlerini kullanarak, konularında uzman kadrosu ile sektörde bilişim alanında ilerlemeyi hedefleyen kurumların…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,00026 contacts →

Exact match

“FSS provides facility management services aimed at improving everyday experiences.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“MASTERTECH, sürekli değişen ve gelişen piyasalarda müşterilerinin zorlu rekabet ortamlarında fark yaratabilmeleri için gerçek ihtiyaca uygun teknolojileri belirler, zaman ve…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 11 of 214 integrated facilities solutions providers based in Istanbul, Türkiye

See the full list, filter by size, metro and specialty, and access 628 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Integrated facilities solutions providers based in Istanbul, Türkiye at a glance

As of Nov 6, 2026
10.8%Verified-email coverage
27.1Average contacts per company
11-50Median size (employees)
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
64
11-50
75
51-200
37
201-500
21
501-1,000
5
1,001-5,000
8
5,001-10,000
3
10001+
1

Email recency for this list is measured across the whole Türkiye list rather than for Istanbul, so it is reported there. Company counts and contact totals on this page are exact for Istanbul, over 214 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 Istanbul, Türkiye whose business descriptions match “integrated facilities solutions providers” 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 628 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 November 6, 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.

Integrated facilities solutions providers by metro in Türkiye

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 “integrated facilities solutions providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many integrated facilities solutions providers are there based in Istanbul, Türkiye?

RevenueBase identified 214 company matches for integrated facilities solutions providers associated with Istanbul, Türkiye as of November 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?

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

Which city in Türkiye has the most integrated facilities solutions providers?

Istanbul leads Türkiye with 214 company records, followed by Ankara (56) and Cankaya (32).

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 628 professional contacts with verified work emails tracked across these 214 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 November 6, 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.