Once you download the free app, search for Rofo and subscribe to the channel and you’re ready to go. When looking for an office space, retail location or warehouse for rent, point the camera on your mobile phone at an appealing office building or city block. If there are available commercial spaces icons will appear on your screen. With just a tap of the finger you can now explore properties, email listing brokers, see interior photos, find the exact square footage and price and get directions. All from your mobile phone.