Building cost per m² BRA by building type in the kommune (normbasert)
Building cost per m² BRA ex VAT, p10, p50 and p90, for each building type (enebolig, tomannsbolig, rekkehus, hytte, tilbygg, garasje) in the address's kommune, with the NS 3453 group split, estimate class and SSB index month. Norm-based: the cost engine over catalogue houses, not market cost.
Status right now
Measured 29 Oct 2026. This is about the section as a whole, not one address: an address outside coverage still gets “not covered”, never “no”.
Available with: a separate agreement, switched on per account · Ask about an agreement
Model and method
What does it cost per m² BRA to build this type of building in the kommune, by the price book?
This is model metadata from the contract. Results are estimates, not observed source facts. Declared maturity and reference comparison do not establish that the current model release is approved or available to the customer.
- Result type
- Calculation
- Method
- Index
- Declared maturity
- Marked stable in the catalogue
- Reference comparison
- No qualified comparison declared
- Contract version
- 1
- Model artifact and runtime version
- Not established by this catalogue description
Inputs, headline fields and comparison basis
Declared inputs
- ProsjektKlar cost engine and price book (NS 3451/3453)
- kataloghus
- SSB 08653
- kommune cost norms
Headline output fields
p10_kr_per_m2, p50_kr_per_m2, p90_kr_per_m2
Declared comparison basis
none: norm-based (normbasert); Norway has no open per-project cost data to check it against
Input names are not a complete training dataset or revision-pinned lineage. Read the caveats and response metadata for what a particular result is based on.
Source terms and reuse
These are declarations from the catalogue contract, not a new rights approval. Customer access, source agreements and privacy need separate assessment. A licence label does not establish coverage or reviewed content.
- Declared licence or terms
- Datakilde model agreement (plan D-3): a norm-based calculation from the ProsjektKlar cost engine
- Declared redistribution
- Agreement terms apply
- Catalogue basis
- Separate agreement
Attribution and note
Shown from the contract in its original language.
Served under a separate agreement; its terms decide what may be shown or passed on.
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.
- Norm-based (normbasert): what ProsjektKlar's cost engine and price book give for a house of this type, run over the catalogue houses and declared reference buildings. It is not observed market cost: Norway has no open per-project cost data. p10/p50/p90 span the price book's ranges and the spread between catalogue houses, not the dispersion of real tenders; treat it as an AACE class 5 (concept screening) figure.
- kr per m² BRA, ex VAT (add 25 % for a private builder), NS 3453 groups 2-9 as the engine prices them: building, VVS, electrical, the engineering reviews (group 8) and the application fee (group 9). Group 1 (site overheads), the plot, connection fees, financing and outdoor works are not in it. The p-values are at reference_bra_m2; kr/m² scales as (BRA / reference_bra_m2)^size_elasticity, which GET /api/v1/benchmarks/building-cost applies for you.
- Re-indexed each month SSB publishes table 08653 (construction cost index for timber detached houses, per trade) from the price book's April 2025 level; index_month is the SSB month applied. norm_basis 'national' means the kommune has no norms of its own and the national row answers (norm_kommune_code '0000').
- Sources: ProsjektKlar cost engine (Approach), SSB 08653 (CC BY 4.0), kommune norms where held. Model: Approach.
Provider-contract fields
3 of 18 fields are value fields — the ones that decide whether a record actually says anything. The rest are context: identifiers, codes and timestamps.
| Field | Type | Role |
|---|---|---|
| building_type | string | null | context |
| kommune_code | string | null | context |
| norm_kommune_code | string | null | context |
| norm_basis | string | null | context |
| method | string | null | context |
| index_month | string | null | context |
| p10_kr_per_m2 | integer | null (m2) | value |
| p50_kr_per_m2 | integer | null (m2) | value |
| p90_kr_per_m2 | integer | null (m2) | value |
| reference_bra_m2 | number | null (m2) | context |
| size_elasticity | number | null | context |
| bra_min_m2 | number | null (m2) | context |
| bra_max_m2 | number | null (m2) | context |
| ns3453_split | object | null | context |
| aace_class | integer | null | context |
| sources | array<object> | null | context |
| tax_basis | string | null | context |
| computed_at | string | null | context |
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 --disable --fail-with-body --silent --show-error --connect-timeout 10 --max-time 30 \
-H "X-API-Key: ${APPROACH_API_KEY:?APPROACH_API_KEY is not set}" \
'https://api.approach.no/api/v1/addresses/285717643?include=building_cost_benchmark'
# paginated, one section at a time
curl --disable --fail-with-body --silent --show-error --connect-timeout 10 --max-time 30 \
-H "X-API-Key: ${APPROACH_API_KEY:?APPROACH_API_KEY is not set}" \
'https://api.approach.no/api/v1/addresses/285717643/sections/building_cost_benchmark?limit=25'Why it cannot be tried here
This section is not part of the public demo projection. That is a licensing and privacy decision, not a sign the data is missing: it is served to customers granted the section.