Is the land values API free and keyless?

Yes. No key, no sign-up, free, a single GET request is enough. The rate limit is 300 requests per minute per IP.

What does the building-land metric mean?

It is the median of a city's standard land values, filtered to building land (residential, mixed, commercial), plus minimum, maximum, zone count and reference date. This keeps the value meaningful and not distorted by forest or water areas.

Why is not every city covered?

Standard land values are provided per federal state. Where a state offers no open BORIS service (for example license-restricted), the API answers honestly with not_covered instead of guessing.

Land values API for German cities (BORIS)

Name: InfraNode land values for German cities (BORIS)
Creator: InfraNode
License: https://www.govdata.de/dl-de/zero-2-0

Official standard land values per city through a free, keyless REST API. The source is the BORIS geodata services of the federal states, aggregated to a building-land metric per city and delivered as consistent JSON.

What data you get

For each covered city the endpoint returns a building-land metric: median, minimum and maximum of standard land values in EUR per square meter, the number of zones and the reference date. Filtered to building land (residential, mixed, commercial) so forest and water zones do not distort the value.

Median standard land value (EUR/m²)
Minimum land value
Maximum land value
Number of land value zones
Reference date

Source: BORIS (standard land value systems of the federal states). License: DL-DE Zero 2.0 or DL-DE BY 2.0 (per state). Source, license URL and timestamp are included in every API response in the meta and attribution block.

How to fetch it

A simple GET request, no key and no sign-up:

curl https://infranode.dev/api/v1/cities/berlin/land-values

For another city, just put the slug from the cities list into the path.

No key, no sign-up, free.

Open quickstart Endpoint reference

Covered cities

Land values are available where the respective state provides an open BORIS service.

Currently available for 56 cities. The exact per-city status is on the coverage and status page, the full list of cities on the cities overview.

Endpoint reference

All parameters, fields and response examples are in the API reference for this endpoint. InfraNode is also available as an MCP server for AI assistants.

Frequently asked questions

Is the land values API free and keyless?: Yes. No key, no sign-up, free, a single GET request is enough. The rate limit is 300 requests per minute per IP.
What does the building-land metric mean?: It is the median of a city's standard land values, filtered to building land (residential, mixed, commercial), plus minimum, maximum, zone count and reference date. This keeps the value meaningful and not distorted by forest or water areas.
Why is not every city covered?: Standard land values are provided per federal state. Where a state offers no open BORIS service (for example license-restricted), the API answers honestly with not_covered instead of guessing.