Unfortunately a lot
And for me they should be more grouped, because there is a lot of non building icons
Another thing that they are in 3 different styles so sometimes it not looks good when use 2 icons from 2 graphic styles. Some icons don't have its opposite or this opposite isn't clear like the alarm siren from second pack.
For me there should be at least all icons for normal house needs. They should be in one style and should be more not enough or less than needs. Of too much icons create a mess and some icons could be maybe deleted or switched to other package.
Maybe better would be when 1st package would have only 1 type of basic building controls (only 1 type of light, blind, shutter, heating, ac etc..).
I've noticed that there is a lack of normal, clear blind and shutter icons(separately for blind and for shutter with open and close state, and could be with some medium position).