I see. So to me it looks like the issues you raised are local council and not strata matters.
Regarding the noise
What you will need to do is provide evidence to the council that the newbie is breaching the level of noise permitted and/or breaching the days and times noise can be emitted (by say, operating loud machinery). These are set by council.
Regarding the activity proposed in the commercial lot
As long as the newbie conforms to council guidelines eg has his DA approved, all you can do is complain to council if any of those guidelines etc are violated.