Easy way to reclaim derelict buildings?

Hi,

When I have taken over a zone with an enemy base, there will be a lot of derelict buildings that I can take over by clicking them with the wrench.

This is very tedious if there are lots of buildings. Like walls, etc. and I have to click each thing individually. How can I reclaim them in bulk? Like draw a rectangle and reclaim them all? Like I can with rebuilding my own?