Company lists · Data refreshed September 2026

Top 16 Building systems integration companies based in Bulgaria

RevenueBase identified 51 company matches for building systems integration companies associated with Bulgaria as of September 2026 and tracks 819 professional contacts across them, including 336 with verified work emails. Sofia is the largest hub.

This list covers company matches for building systems integration companies associated with Bulgaria, 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 27, 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 27, 2026 How this list was built
51Companies
819Contacts tracked
336Verified emails
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The 16 largest building systems integration companies based in Bulgaria

Ranked by team size
Top 16 of 51 company matches for building systems integration companies based in Bulgaria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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 matchSofia, BulgariaHQ recorded Sep 27, 20261,001-5,000312 contacts →

Exact match

“SUNOTEC is an international system integrator of large-scale renewable energy infrastructure, specialising in the design and delivery of integrated energy systems.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchSofia, BulgariaHQ recorded Sep 27, 202651-200121 contacts →

Exact match

“Founded in 1998 in Sofia as an start-up expert company, nowadays CNSYS PLC is one of Bulgaria’s top five system integrators in terms of revenue, IT experience and successful…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchSofia, BulgariaHQ recorded Sep 27, 202611-5062 contacts →

Exact match

“building automation integrated buildings IOT”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchSofia, BulgariaHQ recorded Sep 27, 202651-20036 contacts →

Exact match

“Enterprise Communications Group Ltd.(founded in 2006 as Siemens Enterprise Communications Ltd.) is a leading integrator of the latest information and communication technologies.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchSofia, BulgariaHQ recorded Sep 27, 202651-20023 contacts →

Exact match

“Vilmat Holding AD is a company, specialized in strategic management of projects in the field of weak-current and electrical building installations.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchSofia, BulgariaHQ recorded Sep 27, 202611-5017 contacts →

Exact match

“IFD Engineering LTD – projects for warehouse automation, trade, production and services under one roof – effective and powerful IT solutions that work for you.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchSofia, BulgariaHQ recorded Sep 27, 202611-5014 contacts →

Exact match

“Meet SSARM - the fast growing IT, network, and security solutions system integrator focused on turnkey project delivery, professional and managed services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchSofia, BulgariaHQ recorded Sep 27, 202611-509 contacts →

Exact match

“System integrator with partnerships with Lenovo, Huawei, Intel, Supermicro, Philips, Samsung, LG.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchBurgas, BulgariaHQ recorded Sep 27, 202611-508 contacts →

Exact match

“2 PLUS BULGARIA is a SYSTEM INTEGRATOR providing modern high-tech solutions.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchSofia, BulgariaHQ recorded Sep 27, 202611-507 contacts →

Exact match

“OUR VISION Continuously improving the operational performance and safety of the industry.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchSofia, BulgariaHQ recorded Sep 27, 202611-505 contacts →

Exact match

“As a trusted system integrator, IT Works specializes in delivering comprehensive IT solutions that empower organizations to thrive in the digital era.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchSofia, BulgariaHQ recorded Sep 27, 20261-105 contacts →

Exact match

“One of the leading Smart Home Automation companies in Bulgaria.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchSofia, BulgariaHQ recorded Sep 27, 20261-104 contacts →

Exact match

“IT Services and IT Consulting”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchSofia, BulgariaHQ recorded Sep 27, 202651-2003 contacts →

Exact match

“Main trends of „Index Bulgaria” activities: System integration, delivery, installation and service of computer equipment by world leading manufacturers.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchSofia, BulgariaHQ recorded Sep 27, 20261-103 contacts →

Exact match

“The New Generation of System Integrator.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchLozenets, BulgariaHQ recorded Sep 27, 202611-502 contacts →

Exact match

“Кабита ЕООД е създадено през 2004 г.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 16 of 51 building systems integration companies based in Bulgaria

See the full list, filter by size, metro and specialty, and access 336 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building systems integration companies based in Bulgaria at a glance

As of Sep 27, 2026
41.0%Verified-email coverage
16.1Average contacts per company
11-50Median size (employees)
52.9%Largest-city concentration · Sofia
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
18
11-50
23
51-200
9
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Bulgaria, so it is reported there. Company counts and contact totals on this page are exact for Bulgaria, over 51 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 Bulgaria whose business descriptions match “building systems integration 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 336 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 27, 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 “building systems integration companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building systems integration companies are there based in Bulgaria?

RevenueBase identified 51 company matches for building systems integration companies associated with Bulgaria 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?

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

Which city has the most building systems integration companies?

Sofia leads with 27 company records, followed by Varna (4) and Burgas (2).

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 336 professional contacts with verified work emails tracked across these 51 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 27, 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.