A house in our hamlet has had 3 extensions including a "granny" flat. The property is on an unmade lane which is subject to flooding, mainly from a tarmac parking area of over 400 square meters at the property, this area drains to the lane and was constructed without planning consent. Despite many objections from residents in the hamlet the local council has granted permission for another house on the lawn at the property. This will cause further water runoff and major damage to an already almost unpassable lane, due to construction traffic. Is the council acting lawfully in granting this permission?