The following text is from the original listed building designation:
UNION CRESCENT 1. 1380 (South Side) No 1 TR 3570 NW 1/333
II GV
2. Late C18. 3 storeys and basement stock brick with red brick window dressings. Slate roof with dormers. 3 sashes on each elevation. On the Cecil Street elevation these are set in a 3 light curved bow. Mainly verticals only the other elevation has a central round-headed doorcase with panelled reveals and wrought iron railings to a staircase the shape of a mounting block. Area railings with urn finials.
No 1 form a group with Nos 1 and 2 Cecil Street
Listing NGR: TR3546670828

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