Raslak Works
Data centres · Articles · Uusimaa, Finland

Building in Finland: what to expect from a local subcontractor

When an international construction firm comes to Finland for a data centre or industrial project, it needs local subcontractors. Choosing them decides how much time the site office spends on paperwork, explaining and waiting. Here is what is worth demanding at quotation stage.

Published 2026-09-05 · Raslak Works · Suomeksi

Paperwork ready before anyone asks

Finland's Contractor's Liability Act is strict, and compliance is the client's responsibility. A good subcontractor sends the records with the quote and is a member of Vastuu Group's Reliable Partner programme, from which the client can pull an up-to-date report at any time. Workers' Valtti ID cards, tax numbers and safety cards are listed. If these have to be requested separately, expect delays later.

English as the working language, no interpreter

Site management often works in English, and daily coordination cannot wait for an interpreter. The subcontractor's supervisors must be able to read drawings, take part in site meetings and write reports in English. Raslak Works works in English both on site and in documentation, and its client portal is available in English.

Reporting you do not have to chase

An international main contractor reports to its own client weekly and needs information from subcontractors without asking. Demand daily progress, hours and photos in an agreed format. At Raslak Works this runs through the client portal: site management sees progress, photos and hours in real time, and site meeting minutes are stored in the same place.

Knowledge of Finnish practice

Building control, fire inspections, winter construction, collective agreements and working time law are areas where a local subcontractor saves the client from mistakes. Finnish fire-stopping and compartmentation practice, CE approvals for materials and waste sorting requirements are best left to someone who has done them before.

Keeping to programme with a small crew

On data centre and industrial projects a late package delays everything after it. Demand a firm schedule and ask what happens if it slips. A small, experienced crew that does what was agreed and leaves is often better on a large site than a big organisation that needs its own coordinator. On small targeted packages Raslak Works typically gives a firm start with one to two weeks' notice.

Transparent pricing and extra work

Extra work is the most common source of disputes. Demand that every extra is priced and approved in writing before it is done, and that the invoice shows which approval it rests on. In Raslak Works' portal an extra is logged, priced and approved before the work, and the approval is attached to the invoice.

What we offer

Raslak Works is a construction company in the Helsinki region doing complementary building works on data centre and industrial sites: partitions, fire stopping, floor edging, finishes, doors, office and welfare areas, snagging and upkeep. We do not do power distribution or cooling. We work in English, the paperwork is ready and site management sees progress in the portal. More: data centre services.

Frequently asked questions

What does the Contractor's Liability Act require of the client?
Before contracting, the client must check the subcontractor's registrations, tax debts, pension insurance and applicable collective agreement. A Reliable Partner report covers these in one query.
Does site communication work in English?
Yes. Raslak Works' supervisors work in English on site, in meetings and in documentation, and the client portal is in English.
How is extra work handled?
Every extra is logged, priced and approved in writing before the work. The approval is attached to the invoice.
What kind of work are you suited to?
Complementary building works on data centre and industrial sites: partitions, fire stopping, finishes, doors, office and welfare areas, snagging and upkeep. We do not do electrical or cooling packages.

Tell us the site and the scope — you get an itemised quote and a firm schedule.

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Read next: What a data centre subcontractor must deliver · Data centre construction in Finland: phases · Data centre services