Here are a selection of 3D rendered images of some empty shop fronts, with different window configurations, and doors. They’re particularly useful for creating window display mock-ups for clients. The download link can be found at the bottom of this page.
The windows are semi-transparent for added realism, and so that you can place images behind them. These are free to use as long as you don’t profit from them directly (e.g. sell them on etc.)
I hope that you find them useful. The download link is below.