The council accepted that a further basement would not directly affect the property's external appearance. But it was concerned that a much larger proportion of the building would become subterranean, especially in conjunction with a basement extension that was already permitted.
The inspector reasoned that the plan would promote the basement's role as a key living area. In his view, this would alter the hierarchy of internal spaces forming part of the house's historical significance, undermining its integrity as a heritage asset. As a result, he decided the scheme would not preserve the building's special architectural and historic character.
Inspector: John Chase; Hearing