Company lists · Data refreshed September 2026

Top 25 Building systems integrators worldwide

Name: Building systems integrators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 20,173 companies tracked

RevenueBase identified 20,173 company matches for building systems integrators worldwide as of September 2026 and tracks 339,024 professional contacts across them, including 112,181 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for building systems integrators worldwide, 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. Country and city lists for building systems integrators follow the table.

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

20,173Companies

339,024Contacts tracked

112,181Verified emails

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The 25 largest building systems integrators worldwide

Ranked by team size

Top 25 of 20,173 company matches for building systems integrators worldwide, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Sep 27, 2026	10001+	5,707 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Equans	Exact match	Courbevoie, FranceHQ recorded Sep 27, 2026	10001+	5,064 contacts →
	Exact match “Equans, a Bouygues group company, is a world leader in multi-technical services with offices in 20 country hubs.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Tyco Simplexgrinnell	Exact match	Cork, IrelandHQ recorded Sep 27, 2026	10001+	3,119 contacts →
	Exact match “Tyco is now Johnson Controls, the world leader in fire protection, security, HVAC, building controls and energy storage.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	ATS Corporation	Exact match	Cambridge, ON, CanadaHQ recorded Sep 27, 2026	5,001-10,000	2,754 contacts →
	Exact match “HELPING ADVANCE THE FUTURE ATS Corporation is an industry-leading automation solutions provider to many of the world's most successful companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Velocis Systems Private Limited	Exact match	Noida, IndiaHQ recorded Sep 27, 2026	1,001-5,000	2,637 contacts →
	Exact match “As one of India’s leading system integrators, Velocis partners with organizations to turn technology into a catalyst for measurable business value.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Croonwolter&dros	Exact match	Rotterdam, NetherlandsHQ recorded Sep 27, 2026	1,001-5,000	2,515 contacts →
	Exact match “For more than 140 years Croonwolter & dros has been in the vanguard of new developments.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Allied Digital	Exact match	Mumbai, IndiaHQ recorded Sep 27, 2026	1,001-5,000	2,475 contacts →
	Exact match “Allied Digital Services is a globally recognized leader in Digital Transformation and a Master Systems Integrator, with over four decades of proven experience.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	SVA System Vertrieb Alexander Gmbh	Exact match	Wiesbaden, GermanyHQ recorded Sep 27, 2026	1,001-5,000	2,452 contacts →
	Exact match “Imprint: SVA is one of the leading system integrators in Germany.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Southland Industries	Exact match	Garden Grove, CA, United StatesHQ recorded Sep 27, 2026	10001+	2,439 contacts →
	Exact match “As one of the nation's largest building systems experts, Southland Industries provides innovative, practical results for your engineering, construction, service, and energy needs.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	2,415 contacts →
	Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Giza Systems	Exact match	Cairo, EgyptHQ recorded Sep 27, 2026	1,001-5,000	1,975 contacts →
	Exact match “pulse by solutions (formerly known as Giza Systems Group) is the trusted global force behind critical industries, deploying the Intelligence That Transforms to accelerate digital…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Consort Group	Exact match	Paris, FranceHQ recorded Sep 27, 2026	1,001-5,000	1,704 contacts →
	Exact match “Acteur de référence des systèmes d’information augmentés par l’intégration stratégique de la data, Consort Group accompagne les entreprises pour leur permettre de valoriser ce…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Icad-Ksa	Exact match	Jeddah, Saudi ArabiaHQ recorded Sep 27, 2026	1,001-5,000	1,644 contacts →
	Exact match “ICAD-KSA is a Master Systems Integrator supporting Saudi Arabia’s giga and mega projects under Vision 2030.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Sep 27, 2026	1,001-5,000	1,556 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	SIBCA	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Sep 27, 2026	1,001-5,000	1,504 contacts →
	Exact match “From humble beginnings in 1977, SIBCA has grown to become a leading Solution Integrator Provider in UAE for Fire Protection and Life Safety Systems, Security Systems, HVAC…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Sep 27, 2026	10001+	1,383 contacts →
	Exact match “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	10001+	1,330 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Bravida Danmark A S	Exact match	Brøndby, DenmarkHQ recorded Sep 27, 2026	1,001-5,000	1,298 contacts →
	Exact match “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Italtel	Exact match	Milan, GermanyHQ recorded Sep 27, 2026	1,001-5,000	1,279 contacts →
	Exact match “We help our customers to choose the most suitable solutions for the characteristics of their business, to develop the traditional communication technologies they already have in…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Rovisys	Exact match	Aurora, OH, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,159 contacts →
	Exact match “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Automated Logic Corporation	Exact match	Kennesaw, GA, United StatesHQ recorded Sep 27, 2026	501-1,000	1,115 contacts →
	Exact match “Automated Logic Corporation (ALC) provides innovative building automation and control systems.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Plan Group INC	Exact match	Vaughan, ON, CanadaHQ recorded Sep 27, 2026	1,001-5,000	1,092 contacts →
	Exact match “Plan Group is a dynamic construction company that believes working together makes anything possible.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,077 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Ventec S.A	Exact match	Casablanca, MoroccoHQ recorded Sep 27, 2026	1,001-5,000	959 contacts →
	Exact match “La Société Ventec a été créée au Maroc en 1949 par Monsieur Albert MARQUET Président Directeur Général de Ventec en France.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Value Point Systems PVT LTD	Exact match	Bangalore, IndiaHQ recorded Sep 27, 2026	1,001-5,000	943 contacts →
	Exact match “Value Point Systems, one of the leading Digital Systems & Services Integrator company in South Asia.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “building systems integrators”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 20,173 building systems integrators worldwide

See the full list, filter by size, metro and specialty, and access 112,181 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building systems integrators worldwide at a glance

As of Sep 27, 2026

33.1%Verified-email coverage

16.8Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Sao Paulo

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

8,252

11-50

7,996

51-200

2,860

201-500

591

501-1,000

187

1,001-5,000

121

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for building systems integrators are linked below.
What qualifies: Company records worldwide whose business descriptions match “building systems integrators” 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. 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 112,181 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.

Building systems integrators by location

78 lists · largest first

Every Building systems integrators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building systems integrators are there worldwide?

RevenueBase identified 20,173 company matches for building systems integrators worldwide 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?

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

Which country has the most building systems integrators?

The United States leads with 4,300 companies, followed by Italy (1,124) and India (1,091). Every building systems integrators list by country and city is linked on this page.

Which city has the most building systems integrators?

Sao Paulo leads with 242 company records, followed by Dubai (177) and London (151).

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 112,181 professional contacts with verified work emails tracked across these 20,173 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.