(1) The extension of a residential dwelling and other ancillary development, beyond that enabled through permitted development, will be supported subject to:
(a) the form, scale, setting and design of the proposal respecting existing development, its context, setting and surroundings;
(b) adequate residential amenity space and parking provision being maintained; and
(c) there being no significant adverse impact on the amenity of the occupants of neighbouring properties.
(2) Annexe accommodation will be physically attached to the main house and be commensurate in scale to the needs of the intended occupants.