As part of this dual occupancy proposal the development application involved amending an existing building envelope over the site to accommodate the new house. Consequently it was decided that rather than extending the building envelope and increasing its total area the proposal would include segregating the building envelope into two areas (one occupied by the existing house and one occupied by the new house), which kept all buildings and ancillary service areas within nominated building envelopes and did not exceed the building envelope area approved by council. This proposal was a consistent use for the site and subject to Code Assessment.