Berlin Concierge.

Rent legality

Is this rent legal?

Found a flat anywhere — ImmoScout, a Facebook group, a note in a window? Put its facts in here. We check the asking rent against the Berliner Mietspiegel 2026 and the Mietpreisbremse, and tell you the official row number.

The address

The Wohnlage is a property of the exact building, not the district — which is why this is the one field we cannot do without.

Abbreviations are fine — “Ruheplatzstr.” finds the same street.
Optional, but it disambiguates repeated street names.
The flat
m²
Needed: the Mietspiegel is indexed by building age. Without it there is no row.
The rent
€ / month
Cold rent only. Including Nebenkosten would overstate every flat.
€ / month
€
We check it against the three-month statutory maximum.
€ / month
If it was lawfully higher, the landlord may charge up to it (BGB §556e).
Equipment and exemptions — improves the answer
A Gas- or Etagenheizung heating all rooms counts as one.
The Mietpreisbremse governs new lettings.
If yes, the rent cap does not apply at all (BGB §556f).
Built in the East, started before 3 Oct 1990 but finished after. It belongs in a different and much cheaper age class.
Features — this is what makes the answer exact

The Mietspiegel gives a span, and where your flat sits in it depends on its features. Score them and the rent cap stops being a range and becomes a figure. Tick what applies; anything you leave blank counts for nothing, so a partial answer is safe — just less sharp. These are the Mietspiegel's own checkboxes, in its own words.

kWh/(m²a)
On almost every listing. We score part of the building group from it.
A Bedarfsausweis raises every threshold by 20 %.
If yes, 20 kWh is added before banding.
If yes, the energy penalties are disregarded where a retrofit would conflict with heritage protection.
1. Bathroom and WC (Bad/WC/Gäste-WC)

Features marked "bezieht sich nicht auf Gäste-WCs" are judged on the main bathroom only.

Raises the value (+)

Lowers the value (−)

2. Kitchen (Küche)

Raises the value (+)

Lowers the value (−)

3. The flat itself (Wohnung)

Raises the value (+)

Lowers the value (−)

4. The building (Gebäude)

Holds the energy rules: either the Wärmedämmung/Heizanlage feature OR one to three energy-value features, never both.

Raises the value (+)

Lowers the value (−)

5. The surroundings (Wohnumfeld)

Raises the value (+)

Lowers the value (−)

Judged on what the landlord provides. Anything you fitted yourself, uncompensated, does not count. The Orientierungshilfe is not part of the qualified Mietspiegel, but it is the Senate's recommended basis and the one Berlin courts use.

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