From their website:
These buildings are the first of our new modular type designs and are extremely player friendly. They offer total accessibility with removable facades (front and back) as well as removable roofs. All parts are interchangeable from one building to another so that a whole town or city block can be redesigned to create a variety of different looks. Suitable for 25-28mm scale.
In the coming weeks, we will be releasing phase two which will be the destroyed versions - also interchangeable.
Visit our website for further details and prices.