KMB Head Office (Pioneer Building) & Depot, Mong Kok [1928-1973]
The land lot was purchased in Apr 1928 through public auction with an upset price of $92,300. (See GA 1928 (suppl) No. 107, Hong Kong Government, from http://sunzi.lib.hku.hk/hkgro/view/G1928/608582.pdf)
It was later developed as a bus depot of Kowloon Motor Bus Company till post-war.