Abstract: An approach is provided for mock map data for map design validation. For example, the approach involves calculating one or more combinations of one or more map feature attributes, one or more map feature attribute values, or a combination thereof. The approach also involves creating one or more geometric features respectively for the one or more combinations. The approach further involves determining an arrangement of the one or more geometric features within a designated geographic area. The approach further involves generating mock map data based on the arrangement and providing the mock map data to a map client. The map client, for instance, renders the mock map data in a map image based on a map style taxonomy.