Company lists · Data refreshed August 2026

Top 25 List building services worldwide

Name: List building services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 29, 2026 49,741 companies tracked

RevenueBase identified 49,741 list building services worldwide as of August 2026 and tracks 362,581 professional contacts across them, including 117,360 with verified work emails and 83,869 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers list building services worldwide, 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 August 29, 2026. Country and city lists for list building services follow the table.

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 RevenueBase Smart Search rating on every row Refreshed Aug 29, 2026 86% judged on-target in blind review

49,741Companies

362,581Contacts tracked

117,360Verified emails

83,869Mobile numbers

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The 25 largest list building services worldwide

Ranked by team size

Top 25 of 49,741 list building services worldwide, ranked by team size, largest first. Data refreshed Aug 29, 2026. RevenueBase Smart Search rates how each company's information relates to list building services: 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	Gilbane Building	Partial evidence	Providence, RI, US	1,001-5,000	4,117 contacts →
	Partial evidence “Gilbane Building Company provides a full slate of construction and facilities-related services-from preconstruction services planning and integrated consulting capabilities to…” Source: RevenueBase Database · checked Aug 29, 2026
2	Hensel Phelps	Indirect evidence	Tysons Corner, VA, US	5,001-10,000	4,065 contacts →
	Indirect evidence “As an employee-owned company, Hensel Phelps culture is based on dedication and commitment to delivering EXCELLENCE for our clients and employees.” Source: RevenueBase Database · checked Aug 29, 2026
	RevenueBasePublisher of this directory	Not rated	Boston, MA, United States	n/a	Try free
	Not rated “RevenueBase is a B2B contact data platform. This directory is built from its company graph.”
3	Cury Construtora	Indirect evidence	Rio De Janeiro, BR	1,001-5,000	3,055 contacts →
	Indirect evidence “Atuando no mercado desde 1962, a Cury Construtora desenvolve edifícios comerciais, residenciais, condomínios de casas e conjuntos habitacionais com qualidade garantida e…” Source: RevenueBase Database · checked Aug 29, 2026
4	BL Harbert International LLC	Indirect evidence	Birmingham, AL, US	5,001-10,000	2,826 contacts →
	Indirect evidence “BL Harbert International, LLC began construction operations in under the leadership of Billy Harbert, Jr, carrying on a family tradition in the construction industry dating back…” Source: RevenueBase Database · checked Aug 29, 2026
5	Sundt Construction	Indirect evidence	Sacramento, CA, US	1,001-5,000	2,492 contacts →
	Indirect evidence “Sundt Construction, Inc.” Source: RevenueBase Database · checked Aug 29, 2026
6	Clayco	Indirect evidence	Chicago, IL, US	1,001-5,000	1,725 contacts →
	Indirect evidence “Clayco is a full-service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients across North America the…” Source: RevenueBase Database · checked Aug 29, 2026
7	Structure Tone	Indirect evidence	NY, US	1,001-5,000	1,292 contacts →
	Indirect evidence “Structure Tone was founded in 1971 in NYC, as an interior construction focused builder.” Source: RevenueBase Database · checked Aug 29, 2026
8	The Weitz Company	Indirect evidence	Davenport, IA, US	1,001-5,000	1,102 contacts →
	Indirect evidence “The Weitz Company, a subsidiary of Orascom Construction PLC, is a full-service construction company, general contractor, design-builder and construction manager with office…” Source: RevenueBase Database · checked Aug 29, 2026
9	HTB	Indirect evidence	Porto Alegre, BR	1,001-5,000	1,064 contacts →
	Indirect evidence “HTB is an engineering and construction company of excellence that offers comprehensive services and full solutions for pre-construction, project development and construction.” Source: RevenueBase Database · checked Aug 29, 2026
10	Athié Wohnrath	Indirect evidence	Sao Paulo, BR	501-1,000	1,053 contacts →
	Indirect evidence “Para nós do Grupo a\|w, projetos impactantes são aqueles que traduzem o jeito de ser das pessoas e os valores das empresas.” Source: RevenueBase Database · checked Aug 29, 2026
11	Crossland Construction Company, INC	Indirect evidence	Wichita, KS, US	1,001-5,000	886 contacts →
	Indirect evidence “Crossland Construction Company, Inc, is one of the top 100 ranked contractors in the United States, providing Pre-Construction, Design-Build, Construction Management & General…” Source: RevenueBase Database · checked Aug 29, 2026
12	Kitchell	Indirect evidence	Austin, TX, US	501-1,000	845 contacts →
	Indirect evidence “Kitchell is a privately-owned company with more than seven decades experience in general contracting, construction management, development, facilities management, engineering and…” Source: RevenueBase Database · checked Aug 29, 2026
13	Arco Murray	Indirect evidence	Minneapolis, MN, US	501-1,000	825 contacts →
	Indirect evidence “ARCO/Murray is a single source national design and construction firm that specializes in commercial construction and real estate needs for Fortune 500 companies and individual…” Source: RevenueBase Database · checked Aug 29, 2026
14	GPD Group	Indirect evidence	Seattle, WA, US	501-1,000	786 contacts →
	Indirect evidence “Founded in 1961, GPD Group (GPD) has grown from only a handful of people to over 870 professionals in 14 offices located in Akron, Atlanta, Cleveland, Columbus, Dallas…” Source: RevenueBase Database · checked Aug 29, 2026
15	JRM Construction Management	Indirect evidence	Boca Raton, FL, US	501-1,000	778 contacts →
	Indirect evidence “With over 18 years of trusted experience, JRM has quickly grown to become one of the top General Contracting and Construction Management firms across the US.” Source: RevenueBase Database · checked Aug 29, 2026
16	Nabholz Corporation	Indirect evidence	Jonesboro, AR, US	1,001-5,000	776 contacts →
	Indirect evidence “Nabholz is a leading construction-related service provider.” Source: RevenueBase Database · checked Aug 29, 2026
17	M3 Engineering & Technology Corp	Indirect evidence	Buenos Aires, AR	501-1,000	699 contacts →
	Indirect evidence “M3 is a privately held full service design firm.” Source: RevenueBase Database · checked Aug 29, 2026
18	Mcgough	Indirect evidence	Des Moines, IA, US	501-1,000	694 contacts →
	Indirect evidence “It takes the effort of hundreds and sometimes thousands of people to bring together the vision, expertise and materials to build any structure.” Source: RevenueBase Database · checked Aug 29, 2026
19	FES Group	Partial evidence	Aberdeen, GB	501-1,000	659 contacts →
	Partial evidence “The FES Group is one of the largest independent technical services companies in the UK over 60 years of experience providing building services solutions to a wide range of…” Source: RevenueBase Database · checked Aug 29, 2026
20	Samet Corporation	Indirect evidence	North Charleston, SC, US	501-1,000	602 contacts →
	Indirect evidence “Founded by Norman Samet in 1961, Samet Corporation quickly became known for its unwavering commitment to client satisfaction and high ethical standards.” Source: RevenueBase Database · checked Aug 29, 2026
21	Thomas & Piron	Indirect evidence	Paliseul, BE	1,001-5,000	541 contacts →
	Indirect evidence “Active depuis plus de 50 ans dans la construction, le groupe Thomas & Piron aujourd’hui leader de son secteur avec + de 1800 logements construits ou rénovés chaque année en…” Source: RevenueBase Database · checked Aug 29, 2026
22	MAREK	Partial evidence	Buda, TX, US	1,001-5,000	532 contacts →
	Partial evidence “At MAREK, we believe a company is like a building: It’s only as strong as the foundation on which it is built.” Source: RevenueBase Database · checked Aug 29, 2026
23	A.Tonanni Construções E Serviços	Indirect evidence	Taboao Da Serra, BR	1,001-5,000	462 contacts →
	Indirect evidence “Atuante no mercado da construção civil e nos mais variados segmentos de prestação de serviço e administração de mão-de-obra há mais de 47 anos, a A.TONANNI oferece qualidade…” Source: RevenueBase Database · checked Aug 29, 2026
24	Copachisa	Indirect evidence	Cd. Juarez Chih, MX	501-1,000	447 contacts →
	Indirect evidence “COPACHISA es una de las principales empresas de construcción industrial en México, con más de 50 años ofreciendo soluciones de construcción flexibles en más de 400 proyectos de…” Source: RevenueBase Database · checked Aug 29, 2026
25	Plaza Construction	Partial evidence	New York, NY, US	501-1,000	441 contacts →
	Partial evidence “PLAZA CONSTRUCTION is one of the nation’s leading full-service Construction Management/General Contracting firms recognized for building value with vision.” Source: RevenueBase Database · checked Aug 29, 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: list building services. 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 list building services.
Partial evidence: Its own public description names part of list building services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name list building services. 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 49,741 list building services worldwide

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List building services worldwide at a glance

As of Aug 29, 2026

32.4%Verified-email coverage

23.1%Mobile-number coverage

7.3Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Sao Paulo

Aug 29, 2026Page data refreshed

Companies by employee count

1-10

30,159

11-50

14,628

51-200

2,870

201-500

380

501-1,000

1,001-5,000

5,001-10,000

10001+

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 list building services, 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.
Coverage: 38 countries, largest first: the United States, Brazil, the United Kingdom, France, Germany, Canada, Spain, Italy, the Netherlands, Australia and 28 more. Country and city lists for list building services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “list building services”. 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 list building services), 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 list building services, and records with no verified work email.
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, 117,360 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 August 29, 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.

List building services by location

124 lists · largest first

Every List building services 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 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 list building services, 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 list building services are there worldwide?

RevenueBase identified 49,741 list building services worldwide as of August 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?

Gilbane Building, headquartered in Providence, tops this list with the largest team on record.

Which country has the most list building services?

The United States leads with 16,610 companies, followed by Brazil (3,908) and the United Kingdom (3,609). Every list building services list by country and city is linked on this page.

Which city has the most list building services?

Sao Paulo leads with 899 headquartered companies, followed by London (737) and New York (626).

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 117,360 verified decision-maker contacts tracked across these 49,741 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 29, 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.