Open data
What Berlin sublets are actually asking
Berlin’s short-let market does not happen on the portals. It happens in Telegram groups, which means nobody publishes numbers for it — not the Mietspiegel, which covers permanent leases, and not the listing sites, which barely carry Zwischenmiete at all. We read those groups anyway, so here is the series.
These are asking rents from public posts, de-duplicated across groups. Take them, quote them, chart them — a link back to Berlin Flat Finder is all we ask. If you are writing something and want a cut we do not publish, mail hello@berlinflats.net.
Median ask, by month
All offers with a stated price. The room and whole-flat columns split the same set by what was being let, which is the only way the headline number means anything — a rising median can just be more whole flats.
| Month | Offers | Median | Room | vs prev. | Whole flat | Stay |
|---|---|---|---|---|---|---|
| 2026-07 part | 0 | — | — | — | — | — |
| 2026-08 part | 177 | €900 | €620 | — | €1,200 | 21d |
Rows marked part are not a whole month — the month in progress, and the one the corpus starts in. Their counts are not comparable with the rest; their medians are.
Median ask, by neighbourhood
Last 30 days. Sorted by the typical WG room, which is the closest thing to a like-for-like unit across districts. Neighbourhoods with fewer than five priced offers are left out rather than guessed at.
| Neighbourhood | Offers | Room | All types | |
|---|---|---|---|---|
| Prenzlauer Berg | 20 | — | €1,095 | |
| Treptow | 5 | — | €750 | |
| Lichtenberg | 6 | — | €750 | |
| Friedrichshain | 26 | €700 | €995 | |
| Kreuzberg | 23 | €700 | €890 | |
| Neukölln | 45 | €635 | €1,217 | |
| Wedding | 6 | €500 | €520 | |
| Mitte | 13 | €460 | €600 |
Method, and what these numbers are not
Source. Every figure comes from posts made in public Berlin housing and sublet groups on Telegram. A scraper reads the groups hourly; each post goes through a language model that extracts the preference-independent facts — neighbourhood, monthly price, dates, length, and whether it is a room in a shared flat or a whole place. Posts from people looking for a flat are excluded; only offers count.
De-duplication. The same flat is routinely posted to five groups at once and re-posted a week later. Everything here is folded to one row per distinct post text, newest copy winning, before anything is counted or averaged. Without that the counts roughly triple and the medians tilt towards whoever cross-posts hardest.
These are asks, not rents. Nobody tells us what was finally agreed, so this is the advertised price. Sublet asks are also usually furnished and all-inclusive, which is why they sit above the Kaltmiete figures in the Mietspiegel and are not comparable with them.
Medians, not means. The distribution has a long right tail — corporate relocation lets, a whole flat in Mitte — and a handful of those move a mean by fifty euros. Where a page shows a range, it is the 10th to 90th percentile, for the same reason.
Suppression. Nothing is published from fewer than five observations. A median of three is noise with a euro sign on it, and this page is meant to be quotable.
What we cannot tell you. The obvious question is how fast a listing goes — time to let. We cannot measure it and we are not going to approximate it: Telegram posts are rarely deleted when a room is taken, so a post’s disappearance is not observable, and the alternative — treating a poster’s silence as a let — would be a number invented to fill a column. If that changes, it will appear here.
Coverage. This is the market as it appears in the groups we read, which is a large share of Berlin’s Zwischenmiete traffic but not all of it, and it skews towards English-speaking and newly arrived Berlin. It says nothing about the permanent rental market.
Licence
The aggregates on this page and in the CSV are free to use, including commercially, with attribution to Berlin Flat Finder. The underlying posts are not ours to license and are not published — there is no public listing feed, deliberately.