How do you remove perspective from something?

[TitaniumMike]

Heres is an example, lets say you have made a basic square house front, then put it in right perspective but for whatever reason you decided you needed to change it somehow that required you to take the perspective off and get it back to the flat house front you started with.

How do go about doing that?

As each time I try I can only change the planes, but not remove the perspective entirely.

[Doug A Roberts]

How did you put it in perspective in the first place?

[TitaniumMike]

I grouped it, placed a 2 point perspective grid then used perspective selection tool.