Official address and cadastral identifiers

address_details14 fields6 of these fields open in the demo+ 7 open values outside the contract

Source: Kartverket address register
Geography: The address point
Reported stale after: 7 days
Access: Requires an API key granted this section
Contract version: 1
In packages: core, home_profile

Available with: trial key (open fields) · bought bundle or agreed plan (all fields) · Pricing

What this does not say

Quoted verbatim from the section’s warnings field, exactly as the API returns it. They are not translated: a translation would show something other than what your response actually contains.

Elevation uses the stated source. easting_utm33 and northing_utm33 are EPSG:25833 metres and authoritative; lat and lon are the same point in WGS84 degrees, derived from them and rounded to 6 decimals.

Fields

7 of 14 fields are value fields — the ones that decide whether a record actually says anything. The rest are context: identifiers, codes and timestamps. Fields marked “open” return values to anonymous callers; the rest require a key.

Field	Type	Role	Demo
address_id	string \| null	context	open
address_type	string \| null	value	—
cadastral_unit	string \| null	value	—
property_unit	string \| null	value	—
grunnkrets_id	string \| null	value	—
electoral_district	string \| null	value	—
settlement_name	string \| null	value	—
easting_utm33	number \| null (m)	context	open
northing_utm33	number \| null (m)	context	open
lat	number \| null (degrees)	context	open
lon	number \| null (degrees)	context	open
elevation_m	number \| null (m)	value	—
elevation_source	string \| null	context	—
imported_at	string \| null	context	open

Fetch this section

Send the key in the X-API-Key header. The section can be fetched with the rest of the address, or on its own with pagination.

curl --fail-with-body --silent --show-error \
  -H "X-API-Key: $APPROACH_API_KEY" \
  'https://api.approach.no/api/v1/addresses/285717643?include=address_details'

# paginated, one section at a time
curl --fail-with-body --silent --show-error \
  -H "X-API-Key: $APPROACH_API_KEY" \
  'https://api.approach.no/api/v1/addresses/285717643/sections/address_details?limit=25'

Try it now

This is a real call against the public demo, from here. What appears below is what the API returned — not a sample.