Rofo provides a faceted search engine for commercial real estate properties. The beta provides a search interface at the top of the home and results pages to set parameters including location, size, type of space, and budget. Slider controls are used to narrow size and budget. At present, changes in these settings require a manual page submission to update results. The top location shows some limitations on the number of visible values that can be displayed.

1. Submitting a search from the home page. Cities with properties are matched against the database and suggested via auto-completion.
2. Search results page.
3. Slider controls adjusted for size and budget. Search clicked to resubmit.
4. Selecting more values that are not visible in checkboxes for type of space or sliders in size.

http://www.rofo.com/