I am looking to remodel the exterior facade of my veterinary clinic and would like to find a software program - preferably free - that I can use to try out different exterior designs. Any recommendations ??
Are you good in 3D software ?
You can give a try to home sweet 3D that it's an open source.
If it's for a tray you can use in online, nothing to install. http://www.sweethome3d.com/