Lynn
I'm very confused here, as earlier and later directories tell a different story.
The numbers on the photo aren't clear, and only the one on the end house is visible, but this looks like 11 or 14. This means that the corner house must be on the south side of Wells St, as the number on the north side of the junction would be one of 211-214. The houses are numbered consecutively up the south side and then down the north, and the numbering system has not changed (at least the system hasn't).
Early directories all list nos 1-12 on the right hand side of the junction in the picture, and 14 upwards on the left. From About 1900 to about 1960 nos 13- 21 are not mentioned. However from 1962 no 16 (W.H. Darby) appears between nos 11-12 (The woodman Inn) and the Barr St junction.
So I'm not entirely sure exactly what no the corner house is but would still guess its no 14, and numbers would go up consecutively to the left.
The house is shown in red on the 1903 map, and shows the three houses set back slightly, as the are in the photo, but it looks as if there is a tiny garden or something there then, not pavement
mike