Public establishments for inter-communal cooperation with their own tax status with jurisdiction over a local town planning plan or a land use plan and the communes may, by a decision taken under the conditions provided for in VI of article 1639 A bis, increase the flat-rate value mentioned in 6° of article 1635 quater J up to €5,000.
The flat-rate value thus determined also serves as the basis for the development tax for the portion paid to the départements or the Ile-de-France region.