Research exchange: Airbnb in European cities.

Last week, I was invited to Berlin to meet with a research team from TU Darmstadt and TU Berlin that works on the impact of urban tourism on housing quality in four neighborhoods in Berlin. The team consists of Prof. Sybille Frank, Prof. Kristin Wellner, Dipl-Soz. Anna Raschke, Dipl. Volkswirt Claus Müller and Stefan Brandt, MA. The project is funded by the DFG (German Science Foundation). I was happy to share some insights into our ongoing research on Airbnb in Vienna, particularly regarding our website project More info on the Berlin project can be found on this website:


New publication: The business with the holiday homes. Airbnb in Wien.

I’ve contributed a short text on Airbnb in Vienna to the current issue of the journal Mieterecho, journal of the tenant association Berlin. The text is co-authored with my colleagues Leonhard Plank and Roman Seidl. It briefly sketches our research project on Airbnb in Vienna, specifically focusing on the business model for real estate investors behind the home-sharing platform. The text is available here:

New publication: Tourism in the digital city. The business behind Airbnb.

I’ve contributed to a short text entitled “Tourism in the digital city: The business behind Airbnb”. It is about how Airbnb is increasingly becoming a lucrative investment and a new means for investors to extract profit from tourism. The text was co-authored with Roman Seidl and Leonhard Plank and draws on our recent research on Airbnb activities in Vienna. It appeared in the German journal “Forum Wohnen und Stadtentwicklung”, published by the Bundesverband für Wohnen und Stadtentwicklung, in an issue on “Tourism and urban development”. Our text can be downloaded here (in German):

The whole issue is available here:

Airbnb in Vienna: The business behind the holiday homes.

Together with my colleagues Roman Seidl and Leonhard Plank I have wrote a short piece on Airbnb in Vienna. It appeared in the montly journal “Wirtschaftspolitik Standpunkte” of the Austrian Chamber of Labor. We show how Airbnb in Vienna is not so much about “home-sharing”, as it is about commercial real estate development. The piece is in German.

Airbnb in Wien: Das Geschäft mit den Ferienwohnungen

Gemeinsam mit dem Städtetourismus wächst auch Airbnb in den letzten Jahren rasant. Anders als bei Hotelzimmern bieten auf Airbnb vornehmlich Private ihre eigenen vier Wände zur kurzfristigen Vermietung an. Eine neue Studie der TU Wien zeigt nun, dass Airbnb in Wien zunehmend für die kommerzielle Immobilienverwertung genutzt wird. Wohnungen werden erworben und dauerhaft als Ferienunterkünfte vermietet. Das hat Implikationen für den Wohnungsmarkt.

Hier weiterlesen: Kadi Seidl Plank Das Geschäft mit den Ferienwohnungen


Airbnb in European cities.

I spent the last two days at an inspiring workshop on Airbnb in European cities. It was organized by Christian Smigiel and Angela Hof at the University of Salzburg, Geography Department. I went there together with my colleagues Roman Seidl and Leonhard Plank (TU Wien) to present our research on Airbnb in Vienna (

The program included a diverse and inspiring set of speakers, who explored Airbnb in different European urban contexts from diverse conceptual and methodological vantage points. Cities included were, among others, Salzburg, Thessaloniki, Reykjavik, Palma de Mallorca, Berlin, Vienna, Paris, London, Barcelona, Amsterdam, Lisbon and Copenhagen. While focusing on short-term rentals primarily, we discussed broader issues related to the rise of urban tourism, how it fits into current urban change and restructuring, and what conceptual tools we need to make sense of it. I leave with my many questions and ideas for further work. Thanks to the organizers!

Book discussion: Tourism and gentrification.

On December 1st, I’ll be on a panel discussion about the upcoming book “Tourism and Gentrification in Contemporary Metropolises. International Perspectives”. The book was edited by Maria Gravari-Barbas (University Paris 1) & Sandra Guinand (University of Vienna). I’m looking forward to discussing the book together with the editors and Bas van Heur (Vrije Universiteit Brussels). I’m particularly excited as the topic of the book relates to our ongoing research on Airbnb and gentrification in Vienna. I’ll try to add some thoughts on Vienna to the debate and reflect how the main arguments of the book would relate to the Vienna case (it is not part of the studied cases). Below is the official invitation text:

Dear colleagues,

the second session within our UNIVIE International Book Presentation Seminar is coming up. This series is jointly organized by the Department of Geography and Regional Research & the Department of Sociology at the University of Vienna.

Next Event: DECEMBER 1st, 2017 / 9:30-11:00
Location: Lecture room 4C, 4th floor, Neues Institutsgebaeude (NIG),
Universitaetsstrasse 7, 1010 Vienna

“Tourism and Gentrification in Contemporary Metropolises. International Perspectives”.
Edited by Maria Gravari-Barbas (University Paris 1) & Sandra Guinand (University of Vienna)

2017, New York. Routledge:

Justin Kadi (TU Wien)
Bas van Heur (Vrije Universiteit Brussels)


New publication: Analyzing Airbnb in Vienna.

I’ve been involved in a research project on Airbnb in Vienna in the last months. Together with my colleagues Roman Seidl and Leonhard Plank (both TU Wien), we have analyzed the listings of the online platform in the city. The particular focus has been on the number and types of listings, the geographical distribution, as well as revenues generated by the hosts. An important part was also to estimate the impact of Airbnb on the local housing market.

Airbnb has rapidly expanded in many cities in recent years. Also in Vienna, the number of listings has skyrocketed. While in 2014 there were some 1.300 listings available in the city, in 2017 there were already 8.600. This amounts to a growth of 560%.

Airbnb claims that the platform enables residents to occassionally share a spare room in their home, or, at times, also their whole apartment. One of the key findings of our study is that a considerable share of Airbnb listings are not occassionally shared homes, but permanent holiday apartments. Of the around 8,500 listings in Vienna, some 70% are entire apartments. Of those, some 40% are permanently rented out holiday homes. In absolute numbers, we estimate that around 2,000 apartments in Vienna are permanent Airbnb homes. As these units are no longer available for regular renting, their removal affects the local housing market. This is particularly of concern as the permanent Airbnb aparments are highly concentrated in inner-city districts, where the pressure on the housing market is already very high. The removal of units from the regular rental market there will further push up rents and house prices.

The report of the study is available on an interactive website: For now only in German, but we are working on an English journal paper that I will share on here once published. The map below shows the density of Airbnb listings in Vienna, plotted on a 250x250m grid.