Create a 3D model of a building and deliver it in Zbrush and STL formats

Hello, I need to create a 3D model of a small building for a potential client. It is not a very precise work. I have attached an image of the building. I need to show it to my client in a 3D viewer and print it a 3D printer from SLT format. I will provide photographs of the building as well as access to a website that already contains 3D images of the building for references. After modeling the building I'd like it to be warped in a certain way. The STL file should be ready for printing in a 3D printer. You need to help me in recommending a 3D free viewer. When bidding for this project. please, send me links to sample work you have done in zbrush. Thanks. Azul