Inside Airbnb: London data at June 2 2016, shows that forty one percent (41%) of the "entire homes/flats" listed on Airbnb (10,396 out of 25,285) are being rented out to tourists for more than 90 nights out of the year, for an average of 194 nights.
Many of these are illegal under the new laws that legitmise the "sharing economy" in London, but supposedly protect London's housing supply for permanent residents.
Forty two percent (42%) of the entire homes being listed in London on Airbnb (10,639 of 25,285) are by hosts that have more than one listing - it's simply impossible that they are Londoners renting out the home in which they live, a key claim of proponents of the sharing economy, like Airbnb.
The data shows widespread use of Airbnb to operate full-time hotels out of residential properties - in violation of the law and the loss of housing for regular Londoners.
Section 25 of the Greater London Council (General Powers) Act 1973 (as amended by Section 4 of the Greater London Council (General Powers) Act 1983) prohibitted use of a property for "temporary sleeping accommodation" for less than 90 days without planning permission, or face a possible fine of up to £20,000 for each 'offence' of failing to secure planning permission.
The Deregulation Act 2015 - passed by both houses of United Kingdom parliament and granted Royal Assent by Her Majesty the Queen became law on 26 March 2015.
Sections 44 and 45: Short-term use of London accommodation: relaxation of restrictions and power to relax restrictions, which applies to the 32 London boroughs and the City, came into effect on May 26 2015, and lays out the following:
It is important to highlight that the new laws do not discuss how London authorities and councils will be able to determine whether a property has exceeded the ninety nights of temporary sleeping accomodation per year, nor the obligations of marketplaces like Airbnb that are promoting and facilitating the conversion of residential properties into vacation rentals.
The change in law was explained to parliament by Brandon Lewis MP on 9 February 2015, and was accompanied by a document Promoting the sharing economy in London published by the Department for Communities and Local Government.
The government sought views of the need to reform short-term letting laws in London:
Westminster City Council "asked for the length of short term lets permitted to be reduced from three months to one" and the Westminster Councillor and Cabinet member for sustainability, Heather Acton, said:
This is a step in the right direction, but it doesn’t go nearly far enough." ... "it is about making sure housing in central London does not become a chain of default hotels with rooms rented out at exorbitant prices to the highest bidder.
During the consulation phase of the proposed legislation, Camden Council relayed its experience with residential properties in the borough being used permanently for tourist accomodation:
In respone to the new laws, Camden Council Leader Sarah Hayward said:
The Government’s 90-day rule solution is inadequate as it can’t be properly enforced; we need tougher measures to help stabilise this growing problem.
Let me be clear this is not about private tenants and homeowners who rent out their spare rooms to bring in some extra cash to pay the mortgage or the rent, but we are seriously concerned at the expansion of this market through deregulation and the growth of sites such as Airbnb using London homes like hotels, which is reducing our badly-needed private rented sector supply.
Inside Airbnb provides data compiled from the Airbnb web-site for listings available for London.
A conservative occupancy model has been built in order to estimate Occupancy Rates, Income per Month and Nights per Year. More information on the methodolgy of the occupancy model can be found in the disclaimers.
Inside Airbnb: London uses the following parameters:
If you are a statistician or civic hacker, get the data, analyze and publish your results. If you would like your visualizations hosted, or linked to from this site, please contact firstname.lastname@example.org.
Airbnb provides NO PUBLIC DATA to help understand the use of their platform and the impact on cities around the world.
Airbnb also provide NO DATA to cities or states to assist them in ensuring that Airbnb hosts and Airbnb are following the local laws.
London's buy-to-let landlords look to move in on spare room website Airbnb by James Ball, George Arnett and Will Franklin of The Guardian on 20 June 2014, found that "data suggests investors with empty properties have carved out a huge presence on the site, leasing out their homes and flats". The article was accompanied by London data and maps.
Contains National Statistics data © Crown copyright and database right ; Contains Ordnance Survey data © Crown copyright and database right 
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How is Airbnb really being used in and affecting your neighbourhoods?
Airbnb guests may leave a review after their stay, and these can be used as an indicator of airbnb activity.
The minimum stay, price and number of reviews have been used to estimate the occupancy rate, the number of nights per year and the income per month for each listing.
How does the income from Airbnb compare to a long-term lease?
Do the number of nights booked per year make it impossible for a listing to be used for residential housing?
And what is renting to a tourist full-time rather than a resident doing to our neighbourhoods and cities?
An Airbnb host can setup a calendar for their listing so that it is only available for a few days or weeks a year.
Other listings are available all year round (except for when it is already booked).
Entire homes or apartments highly available year-round for tourists, probably don't have the owner present, could be illegal, and more importantly, are displacing residents.
See the disclaimers for how the Airbnb calendar may not be accurate.
Some Airbnb hosts have multiple listings.
A host may list separate rooms in the same apartment, or multiple apartments or homes available in their entirity.
Hosts with multiple listings are more likely to be running a business, are unlikely to be living in the property, and in violation of most short term rental laws designed to protect residential housing.
(## other listings)
$### income/month (est.)
X night minimum
x.x nights/year (est.)
##.#% occupancy rate (est.)
xxx days/year (##.#%)
click listing on map to "pin" details