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Planning permission for minor construction for a geothermal heat well
Building geothermal heat and energy wells requires a permit.
↗ https://www.suomi.fi/services/planning-permission-for-minor-construction-for-a-geothermal-heat-well-city-of-helsinki-urban-environment-division/12b865e1-cc7f-4cb9-86ed-eadd007a9049