This is the residence of the influential businessman (played by famous local actor, Kenneth Tsang) whose daughter was dating the battalion Major.
Potentially a tricky one to find but, actually, the view from the rear terrace (see below) - towards Aberdeen and Ap Lei Chau - was quite useful in pinpointing the general area.
Luckily the Streetview car has been by here which means I don't have to go (...and get arrested for taking photos of someone's house!). According to the Centamap map, the house has been given the name 'Yapp'.