Company lists · Data refreshed September 2026

Top 25 Site engineering companies based in Finland

RevenueBase identified 49 site engineering companies headquartered in Finland as of September 2026 and tracks 697 professional contacts across them, including 408 with verified work emails. Helsinki is the largest hub.

This list covers site engineering companies headquartered in Finland, 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 September 18, 2026.

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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review
49Companies
697Contacts tracked
408Verified emails
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The 25 largest site engineering companies based in Finland

Ranked by team size
Top 25 of 49 site engineering companies based in Finland, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to site engineering companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceHelsinki, FinlandHQ checked Sep 18, 2026201-500220 contacts →

Partial evidence

“Fimpec is a top expert specializing in consulting, project management and engineering.”

Source: RevenueBase Database · checked Sep 18, 2026
2Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202651-20080 contacts →

Indirect evidence

“RAPP Oy on yksi Suomen vanhimmista rakennuttajatoimistoista, jolla on rohkeutta toteuttaa rakennuttamisen ja työmaavalvonnan palvelut astetta paremmin.”

Source: RevenueBase Database · checked Sep 18, 2026
3Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202651-20073 contacts →

Indirect evidence

“Me Finnmap Infrassa olemme mukana luomassa tulevaisuuden yhdyskuntia ja liikenneverkkoa.”

Source: RevenueBase Database · checked Sep 18, 2026
4Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202651-20062 contacts →

Indirect evidence

“Talokeskus on Suomen vanhin insinööritoimisto, perustettu 1923, ja on yksi Suomen vanhimmista yhä toiminnassa olevista yrityksistä.”

Source: RevenueBase Database · checked Sep 18, 2026
5Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202651-20036 contacts →

Indirect evidence

“Insinööritoimisto Leo Maaskola on partneri-omisteinen vuonna 1956 perustettu talo- ja rakennetekninen suunnittelu, valvonta ja projektinjohtotoimisto.”

Source: RevenueBase Database · checked Sep 18, 2026
6Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202651-20031 contacts →

Indirect evidence

“Raudanlujaa rakentamisen suunnittelua ja valvontaa.”

Source: RevenueBase Database · checked Sep 18, 2026
7Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 2026201-50017 contacts →

Indirect evidence

“Hei me muutetaan: Optiplan saa uuden kodin 1.6.”

Source: RevenueBase Database · checked Sep 18, 2026
8Indirect evidenceOulu, FinlandHQ checked Sep 18, 202611-5014 contacts →

Indirect evidence

“Maveplan Oy on insinööritoimisto, jonka juuret ovat syvällä suomalaisessa maaperässä.”

Source: RevenueBase Database · checked Sep 18, 2026
9Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202651-20011 contacts →

Indirect evidence

“Kun luodaan pohjaa onnistuneelle rakentamiselle, kaiken perustana on huolellinen pohjatutkimus.”

Source: RevenueBase Database · checked Sep 18, 2026
10Partial evidenceHyvinkää, FinlandHQ checked Sep 18, 202651-20011 contacts →

Partial evidence

“RTA-Yhtiöt Oy provides industrial and infrastructure developers with large-scale civil and environmental engineering contracts and specialised works.”

Source: RevenueBase Database · checked Sep 18, 2026
11Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202611-5010 contacts →

Indirect evidence

“Insinööritoimisto TeknoPlan Oy is the residents friendly pipe renovations consulting company in the capital area of finland.”

Source: RevenueBase Database · checked Sep 18, 2026
12Indirect evidenceOulu, FinlandHQ checked Sep 18, 202611-509 contacts →

Indirect evidence

“Tarjoamme infran eri sektoreilla rakennuttamis- ja asiantuntijapalveluita hankkeen valmistelusta takuuajan tehtäviin saakka.”

Source: RevenueBase Database · checked Sep 18, 2026
13Indirect evidenceIisalmi, FinlandHQ checked Sep 18, 202611-509 contacts →

Indirect evidence

“Savolainen Insinööritoimisto Oy is a steadily growing expert in construction, providing construction design and consulting services; architectural and structural design services…”

Source: RevenueBase Database · checked Sep 18, 2026
14Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 202611-508 contacts →

Indirect evidence

“Terranor Verte Oy tarjoaa luotettavaa kumppanuutta asiakkailleen.”

Source: RevenueBase Database · checked Sep 18, 2026
15Indirect evidenceHelsinki, FinlandHQ checked Sep 18, 20261-106 contacts →

Indirect evidence

“Artella on laadukkaita taloteknisiä suunnittelu, valvonta- ja projektinjohtopalveluita tuottava insinööritoimisto.”

Source: RevenueBase Database · checked Sep 18, 2026
16Indirect evidenceLapua, FinlandHQ checked Sep 18, 202611-506 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 18, 2026
17Indirect evidenceRaahe, FinlandHQ checked Sep 18, 20261-105 contacts →

Indirect evidence

“Tarjoamme arkkitehti- ja rakennesuunittelua, maaperätutkimuksia sekä rakenneteknistä konsultointia.”

Source: RevenueBase Database · checked Sep 18, 2026
18Indirect evidenceRaseborg, FinlandHQ checked Sep 18, 202651-2005 contacts →

Indirect evidence

“Mittavat infraurakat, haastava väylärakentaminen ja taitava insinööriosaaminen kuvaavat meitä parhaiten.”

Source: RevenueBase Database · checked Sep 18, 2026
19Indirect evidencePori, FinlandHQ checked Sep 18, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 18, 2026
20Partial evidenceOulu, FinlandHQ checked Sep 18, 202611-503 contacts →

Partial evidence

“Geobotnia Oy is a civil engineering company based out of Oulu, Finland.”

Source: RevenueBase Database · checked Sep 18, 2026
21Indirect evidenceOrimattila, FinlandHQ checked Sep 18, 20261-103 contacts →

Indirect evidence

“Palveluihimme kuuluvat pilaantuneen maaperän ja pilaantuneiden vesien tutkimukset, maa-ainesten ottamis- ja jalostussuunnitelmat, ympäristölupahakemukset sekä yhdyskuntatekninen…”

Source: RevenueBase Database · checked Sep 18, 2026
22Indirect evidenceOulu, FinlandHQ checked Sep 18, 202651-2003 contacts →

Indirect evidence

“Infrap on osa Rakennuttajatoimisto HTJ Oy:tä toukokuusta 2022 lähtien.”

Source: RevenueBase Database · checked Sep 18, 2026
23Indirect evidenceValkeakoski, FinlandHQ checked Sep 18, 202611-503 contacts →

Indirect evidence

“Infra Contracting Earth Construction Energy Construction Enviroment Construction Machine Contracting”

Source: RevenueBase Database · checked Sep 18, 2026
24Indirect evidenceUusikaupunki, FinlandHQ checked Sep 18, 202611-503 contacts →

Indirect evidence

“Maisemarakennus Viitanen Oy on vankan ja monipuolisen kokemuksen omaava maanrakennusyritys.”

Source: RevenueBase Database · checked Sep 18, 2026
25Partial evidenceTampere, FinlandHQ checked Sep 18, 202611-502 contacts →

Partial evidence

“As of April 1, 2021, we have become part of AFRY, a European leader in engineering, design, and advisory services, with a global reach.”

Source: RevenueBase Database · checked Sep 18, 2026

Showing 25 of 49 site engineering companies based in Finland

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Site engineering companies based in Finland at a glance

As of Sep 18, 2026
58.5%Verified-email coverage
14.2Average contacts per company
11-50Median size (employees)
32.7%Largest-city concentration · Helsinki
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
14
51-200
10
201-500
2

Email recency for this list is measured worldwide rather than for Finland, so it is reported there. Company counts and contact totals on this page are exact for Finland, over 49 companies.

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 site engineering companies, 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.
What qualifies
Companies headquartered in Finland whose own description of what they do matches “site engineering companies”. 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 site engineering companies), 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 site engineering companies, and records with no verified work email. Companies headquartered outside Finland are excluded even when they keep an office there.
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, 408 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 September 18, 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.

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 site engineering companies, 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 site engineering companies are there based in Finland?

RevenueBase identified 49 site engineering companies headquartered in Finland as of September 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?

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

Which city has the most site engineering companies?

Helsinki leads with 16 headquartered companies, followed by Oulu (5) and Espoo (4).

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 408 verified decision-maker contacts tracked across these 49 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 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.