| name | hms |
| description | HMS property registry — kaupskrá fasteigna (222k geocoded property transactions) and landeignaskrá (89k land parcels with polygons). |
HMS - Húsnæðis- og mannvirkjastofnun
Property registry and housing market data from Iceland's Housing and Construction Authority.
Data Sources
Kaupskrá fasteigna (Property Purchase Registry)
URL: https://frs3o1zldvgn.objectstorage.eu-frankfurt-1.oci.customer-oci.com/n/frs3o1zldvgn/b/public_data_for_download/o/kaupskra.csv
Format: CSV (semicolon delimited, ISO-8859-1 encoded)
Update frequency: Daily
Coverage: 2006-present, ~222k transactions
Key Fields
| Field | Type | Description |
|---|
| faerslunumer | int | Unique transaction ID |
| fastnum | str | Property number |
| heimilisfang | str | Address |
| postnr | int | Postal code |
| heinum | int | Location ID (7-digit, different from iceaddr hnitnum) |
| svfn | str | Municipality code |
| sveitarfelag | str | Municipality name |
| utgdag | date | Purchase agreement date |
| thinglystdags | timestamp | Registration date |
| kaupverd | int | Purchase price (in thousands of ISK) |
| fasteignamat | int | Property valuation at sale (thousands) |
| fasteignamat_gildandi | int | Current property valuation (thousands) |
| brunabotamat_gildandi | int | Fire insurance value (thousands) |
| byggar | int | Year built |
| einflm | float | Unit area (m²) |
| lod_flm | float | Lot area |
| fjherb | int | Number of rooms |
| tegund | str | Property type: Sérbýli, Fjölbýli, Sumarhús, Atvinnuhúsnæði, etc |
| fullbuid | bool | Whether property is complete |
| onothaefur_samningur | bool | Unusable for analysis (related party, multiple properties, etc) |
Caveats
- Prices in thousands: kaupverd=57000 means 57,000,000 ISK
- heinum ≠ hnitnum: Cannot join directly to iceaddr, use address+postnr instead
- onothaefur_samningur: Filter these for market analysis (related party sales, partial transfers)
Geocoding with iceaddr
The heinum field does NOT match iceaddr's hnitnum. Join on parsed address components:
TRIM(regexp_extract(HEIMILISFANG, '^([^0-9]+)', 1)) as street_name,
TRY_CAST(regexp_extract(HEIMILISFANG, '([0-9]+)', 1) AS INTEGER) as house_num,
upper(regexp_extract(HEIMILISFANG, '[0-9]+([a-zA-Z]?)$', 1)) as house_letter
ON lower(street_name) = lower(heiti_nf)
AND house_num = husnr
AND postnr = postnr
AND house_letter = COALESCE(upper(bokst), '')
Match rate: ~97%
Processed Data
Location: /data/processed/kaupskra_geocoded.parquet
Includes all kaupskra fields plus:
lat, lng - WGS84 coordinates from iceaddrverd_per_m2 - Price per m² (in ISK, not thousands)
Quick Queries
duckdb -c "SELECT count(*), count(lat), median(kaupverd*1000/einflm_m2) FROM 'data/processed/kaupskra_geocoded.parquet' WHERE NOT onothaefur AND tegund='Fjölbýli'"
duckdb -c "SELECT heimilisfang, kaupverd*1000 as kr, einflm_m2 FROM 'data/processed/kaupskra_geocoded.parquet' WHERE postnr BETWEEN 101 AND 128 AND kaupsamningur_dags >= '2024-01-01' ORDER BY kaupsamningur_dags DESC LIMIT 20"
Landeignaskrá (Land Parcel Registry)
Landing page (Vercel-guarded, Icelandic): https://hms.is/gogn-og-maelabord/grunngogntilnidurhals/landeignaskrazip
Bulk ZIP (Azure blob, no auth): https://hmsstgsftpprodweu001.blob.core.windows.net/fasteignaskra/Landeignaskra.zip
Field descriptions PDF: linked from the landing page as "Eigindalýsing".
~25 MB ZIP containing a single ESRI Shapefile (LANDEIGNASKRA_AFHENDING.*) with 89,050 parcels in CRS EPSG:3057 (ISN2016 Lambert). Script: scripts/landeignaskra.py (download, extract, info, build, lookup, discover).
Schema
| Column | Meaning |
|---|
LANDE_NR | Landsnúmer (parcel ID, 6–7 digit integer; keep leading zeros when expressing as 7-char) |
SVF_NR | Municipality number |
GERD | Type — Lóð (85,060 lots), Jörð (3,443 farms), Þjóðlenda (270 public) |
SKIKI_NR, SKIKI_AUDK | Sub-parcel ID and share code (e.g. "1/1", "4/277") |
L_ST_SKRAD / L_ST_MAELD | Registered vs. measured area |
DAGS_INN, DAGS_LEIDR | Registration / last-correction dates |
GERD, ADFERD_INN, NAKVAEMNI, HEIMILD | Provenance metadata |
The processed CSV (data/processed/landeignaskra.csv) adds landsnr (7-char zero-padded), lon, lat (WGS84 centroids).
Encoding
The .dbf file is ISO-8859-1; pyogrio / geopandas will read it as Latin-1 and surface text as mojibake (Lóð for Lóð). Either decode with ISO-8859-1 explicitly or accept that the GERD / Icelandic text columns are cosmetic.
Crosswalks from other registries
| Source ID | Length | Convert to landsnúmer |
|---|
| búsnúmer (farm ID, Ministry of Agriculture — see maelabord_landbunadarins) | 8 digits (displayed as 7 after leading-zero strip) | int(busnr) // 10 |
Example: búsnúmer 16656491 (Gunnbjarnarholt 2, top cattle recipient 2026) → landsnúmer 1665649. Caveat: only ~3,443 of the 89k Landeignaskrá parcels are GERD='Jörð'; many active farm búsnúmer correspond to landnúmer that exist in iceaddr's Staðfangaskrá (~138k landnúmer, including historical farms) but not yet in HMS's surveyed registry. For farm point-location, iceaddr is the practical primary source; Landeignaskrá gives you parcel polygons when you need them.
Mælaborð íbúða í byggingu (Units Under Construction)
Landing page: https://hms.is/gogn-og-maelabord/maelabord-ibuda-i-byggingu
Report page: https://hms.is/skyrslur/ibudir-i-byggingu
Interactive dashboard + Iceland map showing every dwelling currently under construction, updated in real-time from HMS's building registry (byggingaskrá). Launched mid-2024. Used by municipalities, contractors, lenders, real-estate agents.
Most recent counts (March 2025): 7,181 units under construction, 69.7% in the capital region.
Scope: Per-unit location, construction stage, municipality, project.
Access:
- Interactive dashboard (HTML + Leaflet map) on the landing page.
- Published reports (PDF) linked from
/skyrslur/ibudir-i-byggingu.
- No public API or raw data download — the Hagtalnanefnd report (March 2026) specifically flags this as an example of HMS publishing "aðeins mælaborð eða skýrslur" (only dashboards and reports), with raw data not accessible under law 45/2018.
Scraping notes:
hms.is is fronted by Vercel with an anti-bot checkpoint. curl and httpx get the "Vercel Security Checkpoint" HTML. Use Playwright (headless Chromium) to bypass.- The dashboard fetches JSON from internal
/api/... endpoints — inspect via DevTools Network tab while Playwright has the page loaded. Pattern similar to landlaeknir scraper but the source is custom (not Power BI).
Complementary sources:
- hagstofan table FAS01302 — completed dwellings by year (historical, not real-time).
- skipulagsmal — Planitor building-permit data (case-level, 5 municipalities).
License
Open data, attribution required: "Byggir á upplýsingum frá Húsnæðis- og mannvirkjastofnun"
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