The following text is from the original listed building designation:
MOUNT SION 1. 1746 (North Side) No 23 (Whiteleaf) No 25 TQ 5838 NW 1/27 20.5.52. II GV 2. 2 early C19 houses forming a small terrace. 3 storeys, the ground floor above street level. White brick on an ashlar base. Parapet and eaves cornice. 11 windows in all with glazing bars intact. 3 curved bays containing 3 windows each. Between them are round-headed windows with iron balconies on the 2nd floor and small porches with iron mushroom capitals beneath the round-headed windows. No 25 has a double flight of 12 wide steps leading up to the porch. The porch of No 23 is a verandah as its entrance is on the west side by means of a long trellised porte cochere. Nos 9 to 29 (odd) form a group.
Listing NGR: TQ5838138823

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.