Re-skinning a building can make a huge difference. One of the projects NuMark Building Corp is working on involves taking an existing building, tearing part of it down, and residing/remodeling part of the building. If your building, for the most part, is in pretty good shape, considering adding a new section and remodeling the outside of the existing building. This can be really useful when you are on a tight budget or you just need more space.
This is what we are currently doing at De Ruiter Lawn Equipment. We tore down part of the building and we are going to add a new section as well as re-skin the outside. As theses picture shows, just re-skinning a roof and wall, makes a vast difference.