Is there any way..

[? Frisky Dingo ?]

To actually delete buildings as any race? Like if you block off the ramp or build in the wrong place ect, once the building is built is there a way to destroy it on your own?

 

[Stormrider^]

To actually delete buildings as any race? Like if you block off the ramp or build in the wrong place ect, once the building is built is there a way to destroy it on your own?

I'm pretty sure you can force your units / workers to destroy the building and I think as any race you can cancel the building when it isn't done but still building/morphing/warping.

 

[ronpaul]

select units, press a, select building. Or hit escape while it's building

 

[Cut Chem!st]

I block my self in a ton with badly placed rally points :/

Like ronpaul said, if you select your units hit a then select the building they will attack it. You can actually attack your own units to free up supply also. Hate it though when I'm not focused on the battle and accidentally a click one of my more expensive units and take off half it's hp :<, or they drop and I send all my units and accidentally click my nexus.