# Occupancy ceiling

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**Occupancy ceiling:** The upper end of our occupancy estimate: booked nights plus nights whose cause is unclear, as a share of the 90 nights after each observation.

## How we measure it

Ambiguous nights are closed runs of 8 to 29 nights, which could be a long stay or a host block. We publish the ceiling beside the booked share, so you see a range rather than one guessed figure.

## What it is not

It is the top of a range, not an occupancy figure on its own, and not a hard maximum: a guest stay of 30 nights or more is counted as blocked.

## Where it appears in the data

Field names as the API returns them; each dataset's page in the API lists the field's type and unit.

- `occ_ceiling_pct` in dataset `airbnb_occupancy`
- `occ_ambiguous_nights` in dataset `airbnb_occupancy`

## Related

- [Short-term rental data: how we measure it](/methodology/short-term-rentals/)
- [All glossary terms](/glossary/)