A sale of real estate must be concluded in writing. The seller and the buyer or their attorneys shall sign the deed of sale. A notary shall attest the sale in the presence of all the signatories of the deed of sale.
In the future, sale or other conveyance of real estate may be concluded also electronically in the trading system referred to in the Code of Real Estate [An Electronic Deed of Sale]. According to the National Land Survey of Finland, electronic real estate trading system shall be in use in 2015.
The deed of sale shall indicate:
the intent to convey;
the real estate to be conveyed;
the seller and the buyer; and
the price or other consideration.
The sale shall not be binding unless it is concluded as provided in the law. If the seller and the buyer have agreed on a price or other consideration in excess of that taken into the deed of sale, the seller shall not have the right to collect the excess amount.
Also an assignment of a right to use of real estate must be concluded in writing. It must include certain information referred to in the Code of Real Estate, if the assignment of a right must be registered.