Company lists · Data verified August 2026

Top 25 List building services based in Helsinki, Finland

Name: List building services based in Helsinki, Finland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 52 companies tracked

There are 52 list building services headquartered in Helsinki, Finland (RevenueBase, August 2026). RevenueBase tracks 263 professional contacts across them, including 154 with verified work emails and 11 with mobile numbers. Helsinki is the largest hub.

This list covers list building services headquartered in Helsinki, Finland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

52Companies

263Contacts tracked

154Verified emails

11Mobile numbers

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The 25 largest list building services based in Helsinki, Finland

Ranked by team size

Top 25 of 52 list building services based in Helsinki, Finland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Takoi Yhtiöt	Helsinki	51-200	31	20
2	Rakennus Grahn OY	Helsinki	11-50	24	16
	RevenueBasePublisher of this directory	Boston, MA	n/a	n/a	Try free
3	AMP Yhtiöt OY	Helsinki	11-50	13	10
4	Pylon Rakennus OY	Helsinki	11-50	12	10
5	Avarrus Architects	Helsinki	11-50	12	10
6	Catedral Group OY	Helsinki	1-10	12	5
7	Insinööritoimisto Teknoplan OY	Helsinki	11-50	10	9
8	Pc-Saneeraus OY	Helsinki	11-50	10	3
9	Luovaus Arkkitehdit OY	Helsinki	1-10	9	7
10	Laitila Architects	Helsinki	11-50	7	6
11	Insinööritoimisto Artella OY	Helsinki	1-10	6	6
12	United Founders OY	Helsinki	51-200	6	3
13	Brushpainters OY	Helsinki	11-50	6	3
14	LPV Arkkitehdit	Helsinki	11-50	5	4
15	Rautkylä Konsultointi OY	Helsinki	1-10	5	4
16	Arkkitehdit Mk2 OY	Helsinki	1-10	5	4
17	Finbound	Helsinki	1-10	5	3
18	Ht-Prokon OY	Helsinki	1-10	4	3
19	ARK Hormia	Helsinki	1-10	3	3
20	Creago OY	Helsinki	1-10	3	3
21	Rakennuttajatoimisto Corro	Helsinki	1-10	3	3
22	Arkkitehtitoimisto Eero Korhonen OY	Helsinki	1-10	3	2
23	Arkkitehdit Mustonen OY	Helsinki	1-10	3	2
24	HMT Arkkitehdit OY	Helsinki	1-10	2	2
25	Arkkitehtitoimisto Siltanen JA Laakso OY	Helsinki	1-10	2	2

Showing 25 of 52 list building services based in Helsinki, Finland

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List building services based in Helsinki, Finland at a glance

As of Aug 28, 2026

1-10Median size (employees)

HelsinkiLargest hub · 52 HQs

11Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

List building services by metro in Finland

Metro	Companies
List building services in Helsinki	52
List building services in Tampere	15
List building services in Vantaa	8
List building services in Turku	8
List building services in Espoo	8
List building services in Oulu	5
List building services in Lahti	4

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “list building services”, with match quality audited by blind human judging, and headquartered in Helsinki, Finland.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many list building services are there based in Helsinki, Finland?

There are 52 list building services headquartered in Helsinki, Finland as of August 2026 (RevenueBase).

What is the largest company on this list?

Takoi Yhtiöt, headquartered in Helsinki, tops this list with the largest team on record.

Which city has the most list building services?

Helsinki leads with 52 headquartered companies, followed by Tampere (15) and Vantaa (8).

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 154 verified decision-maker contacts tracked across these 52 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Related lists

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.