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Contact us

How can we help you? Here you can find our contact details and service hours.

Koas | Office

Quick link to online services.

Customer service:

Tel. +358 29 180 4444
(Phone charge inside Finland: 8,35 cents/call + 16,69 cents/min)

Email: koas@koas.fi

If you are emailing personal/sensitive data or attachments containing such data please follow these instructions.


Central Finland Student Housing Foundation
Kauppakatu 11 A, 2nd floor

Opening hours

New service hours as of March 1st, 2024:

Koas office: Mon, Wed & Fri: 12 noon – 3 pm.
Telephone service: Mon – Fri: 12 noon – 3 pm.

1st working day of the month: Office is open 12 noon – 3 pm.

See also: Koas online services.

We are closed on Finnish public holidays. You can find exceptional opening hours in the News section.

Questions about rent?

In rent payment matters please contact us primarily by e-mail at:

If you want to deal with matters related to rent payment at the office, please book an appointment separately by e-mailing us at vuokrat@koas.fi.


Contact the maintenance company of your own housing location in case of lost keys or emergency maintenance situation. Check out the contact details of the maintenance companies on the maintenance webpage:

Bank connection

Keski-Suomen Osuuspankki, member of OP Corporate Bank Plc
IBAN: FI40 5290 0220 0111 73
Address of the bank: Gebhardinaukio 1, 00510 Helsinki, FINLAND