My parents house was built before development of the area. The original road was built on and another road built on the other side of the house, both the old and current street names are still valid postal streets (the old street name is still attached to the house on the end). The old street name is commonly used to refer to the terrace of houses. My parents still have legal right of access (recorded on the deeds) across the back gardens of the houses that were built on top of the old road.