#480 was one of the last houses to be built on this block. The Might Directories narrow the date of construction to between 1901 and 1909. Goad seems to confirm that it went up after 1898, and his 1912 reprint depicts it as a two-and-a-half storey brick-on-wood build.
The asymmetry may be a Victorian hold-over, but the heavy-set appearance is Edwardian. On the first and second floors, fussy ornamentation has given way to sills and lintels that run in bands across multiple windows, while the third-storey brickwork is worth stopping and pointing at.
Might 1909 lists the likely first occupant as "Jones, Louis K., Secretary Department Railways and Canals", eventually Assistant Deputy Minister of the same.