I’ve continued to collect data about listings in cities around the world from the Airbnb web site, and I’ve been posting maps based on them here. Each map takes some manual work, so I have not uploaded all the data I’ve collected. But after many requests I’ve finally uploaded the basic data for all the 99 cities (and/or regions) I’ve surveyed, and they are available here. For some cities, it is just one survey, while for others there are (roughly) monthly surveys over a period of two years or more. Each download is a zip file that contains one or more comma-separated values (CSV) files that can be read into your generic spreadsheet program or other application of choice.
The code I use is posted on github here, and the method is described roughly here, although there are some changes over time. If you find mistakes or if you do find it useful, I would love to hear anything about how you use it.