# Beyond ninety nights

> London caps short lets at ninety nights a year. Most calendars are open for longer.

- Category: Housing
- Cadence: quarterly
- Status: Published on a quarterly cadence.
- Dataset key: `airbnb-over-90`
- Source: [Inside Airbnb](https://insideairbnb.com/get-the-data/)
- Licence: CC BY 4.0 — [terms](https://creativecommons.org/licenses/by/4.0/)
- Canonical page: [https://londongraph.com/g/beyond-ninety-nights](https://londongraph.com/g/beyond-ninety-nights)
- Machine-readable record: [https://londongraph.com/data/beyond-ninety-nights](https://londongraph.com/data/beyond-ninety-nights)

## Methodology

Entire-home listings whose calendar shows more than 90 nights available in the next year, as a share of all entire-home listings in the borough. London is the only English city with a statutory short-let limit — 90 nights without planning permission — and this is the share of listings advertising beyond it. IMPORTANT: availability is what the host has left open, not what was booked. A calendar open for two hundred nights may have been let for twenty. This is evidence of intent, not proof of breach. Boroughs with fewer than 50 entire-home listings are excluded as too small to give a stable share.

## Visualisations

- [Availability map](https://londongraph.com/g/beyond-ninety-nights): Compare borough shares of entire-home calendars open beyond 90 nights. Caveat: Availability is evidence of an open calendar, not proof of a booking or breach.
- [Borough distribution](https://londongraph.com/g/beyond-ninety-nights?view=distribution): Place borough over-90 shares around the London median and quartiles.
- [Pressure relationship](https://londongraph.com/g/beyond-ninety-nights?view=pressure): Compare entire-home listings per 1,000 Census households with the share open beyond 90 nights. Caveat: This descriptive relationship does not establish unlawful letting or housing displacement.
- [Host concentration](https://londongraph.com/g/beyond-ninety-nights?view=host-concentration): Compare multi-listing-host shares with exact host and listing denominators.

## Citation guidance

Attribute the original publisher named above and identify LondonGraph as the visualisation and methodology layer. Do not describe live values as a historical census, and do not present placeholder values as observations.