I might be wrong but this looks to me like an advert for the yet-to-be-built Ferry Point estate, or at least the first buildings on that estate that were erected. The smaller writing on the left in the lowest pictures says 建築地盤 (gin juk dei pun) which basically means "construction ground". But if you look at the larger characters on the left I believe they say 文英樓 (man ying lau) i.e. Man Ying Building which is the name of one of the blocks within the estate. Along with the neighbouring Man Yuen Building these two were the first in the estate to be built and were open by 1964 - two years after this film was made. The picture on the wall is the artists impression of how the estate would look after completion. It's a pity we can't see it in higher resolution.
So it looks like the movie caught the area just prior to the building work being started for the Ferry Point Estate.