I can't believe that 4 years after this serious issue was raised, Airbnb have done nothing to rectify the problem, and don't appear to have even acknowledged that there is a problem. They set up a "community" forum to make us feel as though we are part of one big family, then never bother to look at what the members of the family are saying. Like sending the kids off to boarding school then moving house while they are away. Really caring. I would like to be pleasantly surprised by someone from Airbnb actually commenting on this conversation and explaining to us why they are unable to provide the simple facility to search by property reference, but I'm not holding my breath. And it really is a simple addition to the functionality of the website, I spent the last 17 years of my IT career as a web developer so I know that adding a search by unique identifier is a piece of cake. If the use enters a search term that is entirely made up of numbers, assume it may be a unique property reference and search your database for it. As a rule, I don't like shouting online, but sometimes there is no alternative. So LISTEN UP AIRBNB, THIS ISSUE IS LOSING YOU CUSTOM AND LOSING THE GOOD WILL OF YOUR CLIENTS, IT IS COSTING YOU MONEY! So Airbnb, explain (if you can) why you think it is a bad idea, otherwise fix it!