The following map displays the evolution of Airbnb accomodations in New-York City since 2008 until 2015. You can play with this map by using the slider located under the GoogleMaps.
Data used in this project come from Inside Airbnb and a specific crawler developped by myself. It parsed the registration date located on user's profiles. Data is available under "Any commercial use licence CC BY-NC"
Methodology :Airbnb displays only the registration date of users. The creation date of an offer is not available. I used this registration date as creation date for the accomodation. It's not 100% accurate but it's the only way to display the information. Per example if John registered in January 2008, add 1 accomodation in the same time and add 4 accomodations in Septembre 2013, the five offers will use "january 2008" as creation date instead of september for the last 4. After data analysis only few users have several accomodations.