A 1:1250 scale plan showing the size and position of the building, or the building as extended, and its relationship to adjoining boundaries (commonly known as block plans)
Cynllun wrth raddfa 1:1250 yn dangos maint a lleoliad yr adeilad, neu’r adeilad ar ôl iddo gael ei ymestyn, a’i berthynas â therfynau cyfagos (a elwir yn gynlluniau bloc fel arfer)