This is what we are doing, building in the same flexibility and trying to ensure Part V becomes a settled part of the planning process in Ireland. One may ask the reason developers or landowners should contribute towards social and affordable housing. The value of land is increased by a decision of a local authority to zone land for residential development. Part V is based on the principle that there should be some benefit to the community arising from that decision and that developers should contribute some of the gain back to the community. It was this principle that was upheld by the Supreme Court in the summer of 2000 when it declared that Part V was constitutional.