---
title: "Finnish house price index (existing dwellings)"
method: GET
path: "/api/v1/stat-finland/house-prices"
tags: ["Statistical Agencies"]
---

# Finnish house price index (existing dwellings)

`GET /api/v1/stat-finland/house-prices`

Monthly price index of old dwellings in housing companies (`ashi/statfin_ashi_pxt_13ms.px`, 2020=100). Default query returns the whole-country total building-types aggregate. Regional codes available: `ksu` whole country, `pks` Greater Helsinki, `091` Helsinki, `853` Turku, `837` Tampere, `564` Oulu, and more.

## Query parameters

- `last_n` integer — Number of most-recent months to return.
- `region` string — Alue (region) code. `ksu` whole country.
- `building_type` string — Talotyyppi. `0` all building types, `1` terraced houses, `3` blocks of flats.
- `indicator` string — Tiedot code. `ketj_P_QA_T` = index (2020=100); `vmuut_P_QA_T` = annual change %.

## Response `200`

Monthly dwelling price index observations.

- EnvelopeStatFinHousePricesPayload
  - `data` StatFinHousePricesPayload, required
    - `table_id` string, required — PxWeb table identifier.
    - `indicator` string, required — Tiedot code. `ketj_P_QA_T` is the index (2020=100).
    - `region` string, required — Alue (region) code selected.
    - `building_type` string, required — Talotyyppi code selected.
    - `observations` StatFinHousingObservation[], required — Monthly dwelling price observations.
      - `period` string, required — PxWeb period code as returned upstream: `YYYYMnn` for months, `YYYYQn` for quarters, `YYYY` for years.
      - `time` string, nullable — ISO-8601 UTC timestamp for the first day of the period (months -> first day of month, quarters -> first day of quarter, years -> Jan 1).
      - `value` number, nullable — Parsed numeric value. `null` when upstream value is `.` or `..` (suppressed or missing).
      - `value_raw` string, nullable — Raw value string as delivered by PxWeb; useful for debugging.
      - `Alue` string, nullable — Region code. `ksu` covers the whole country.
      - `Talotyyppi` string, nullable — Building type. `0` all types, `1` terraced houses, `3` blocks of flats.
    - `count` integer, required — Number of observations returned.
    - `metadata` StatFinMetadata — Raw metadata block copied from PxWeb.
      - `updated` string, nullable — Upstream last-updated timestamp, normalised to ISO-8601 UTC (PxWeb delivers dot-separated time like `2026-04-14T05.00.00Z`; Sugra replaces the dots with colons).
      - `label` string, nullable — Human-readable table label.
      - `source` string, nullable — Source attribution string as delivered by Statistics Finland.
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/revisions/4e2740743eb4/schema)