Change of use of single-storey workplace building from business use to 2-storey annexe building (2 x 1-bed annexes) ancillary to existing dwelling involving raising the height and insertion of dormer windows, replacement of existing workplace door with door/window, erection of conservatory to rear and installation of external staircase (part retrospective)

Erection of an annex (single-storey, 2-bed) within curtliage of existing dwelling involving the demolition of existing building