https://inspire-wms.maanmittauslaitos.fi/inspire-wms/CP/ows?service=wms&request=GetCapabilities

From the dataset abstract

NLS-FI INSPIRE Cadastral Parcels Theme Dataset is a dataset depicting the Cadastral Parcels and Basic Property Units covering the whole of Finland. It contains the following INSPIRE feature types: BasicPropertyUnit, CadastralParcel, CadastralBoundary.

The elements are updated weekly. The dataset is based on the NLS Cadastral Index Map database.

The dataset is available via the NLS-FI INSPIRE Download Service (WFS) for Cadastral Parcels Theme and it can be viewed via the NLS-FI INSPIRE View Service (WMS) for Cadastral Parcels.

Source: NLS-FI INSPIRE Cadastral Parcels Theme Dataset