Office figures: CBRE — about 697,000 m² of modern (class A and B) offices in Ljubljana, 3% empty in Q2 2026 (vacant area = stock × rate; older stock not counted). Homes: our economic model’s conversion engine. Map built 2026-10-09.
One point per building, from public records, open data and cited reports. Filter by type, size and how sure the evidence is; open one to see who says so and whether it could become homes.
No register of empty buildings or homes by address, and no tax on empty homes; the land register's ruin entries are condition, not vacancy, and private owners are not in the open data.
Check any building in Ljubljana: could it become homes, and could the EHC model work there?
The districts where empty space, the right zoning and a working neighbourhood come together, and the owners and programmes that open a door. 20,910 m² of offices stand empty (3% of the stock).
The City owns many old buildings in the core, and some of their units are entered in the land register as ruins (e.g. Mahrova hiša, 711 m²).
Risk: Heritage protection and mixed ownership by units make whole-building conversion slow.
Former industry and warehouses along Šmartinska cesta; the largest building recorded as a ruin (2,997 m²) and the fund's biggest site (Povšetova, 361 homes) are here.
Risk: Land is held by property companies waiting for value; the public projects are the fund's own.
Plečnik's stadium has been closed for almost a decade behind a construction fence.
Risk: A protected sports monument, not housing; its future is tied up in a long-running redevelopment dispute.
Public land on the southern edge: Rakova jelša I (99 homes) is being built and Rakova jelša III (53) is next — the site once offered in part to a housing co-op.
Risk: Flood-prone ground and a fund that now plans to build it itself.
Decisions, auctions and closures that change what becomes available, and when.
CBRE: about 697,000 m² of modern offices, 3% empty in Q2 2026.
JSS MOL told the City Council it has 676 public rental homes in eight projects in development and about 3,370 in areas still being prepared.
€100 million a year for ten years, open to municipalities, public funds and non-profit housing organisations.
SURS data for 2018, as checked by 24ur; the figure includes homes rented informally.
JSS MOL said it would give part of Rakova jelša III to a rental housing co-op chosen by tender.
18 sources connected, 1 waiting for access. We only use data we may lawfully reuse; where a publisher blocks automated access we do not work around it — a person downloads it, or we ask for permission.
| Source | Access | Records | Status | Licence |
|---|---|---|---|---|
| OpenStreetMap disused/abandoned tags and brownfields OpenStreetMap contributors | Open API | 77 | Live 2026-10-09 | ODbL 1.0 (© OpenStreetMap contributors) |
| Rail, S-Bahn and U-Bahn stations (OpenStreetMap) OpenStreetMap contributors | Open API | scoring | Live 2026-10-09 | ODbL 1.0 (© OpenStreetMap contributors) |
| Building heights: GlobalBuildingAtlas (TU Munich) Zhu, X. X., Chen, S., Zhang, F., Shi, Y., Wang, Y. (2025), Technical University of Munich GlobalBuildingAtlas: an open global and complete dataset of building polygons, heights and LoD1 3D models. Earth System Science Data 17(12), 6647–6668, doi:10.5194/essd-17-6647-2025. Read from the Parquet copy on Source Cooperative. Satellite-derived heights (typically 1.5–3 m error in Europe), turned into storeys with storey heights fitted on Berlin; used only where no register or official 3D model sizes the building. | Open download | 106 buildings sized | Live 2026-10-09 | CC BY-NC 4.0 (heights); footprints from OpenStreetMap and Microsoft: ODbL |
| Road noise (EU Environmental Noise Directive, Lden) European Environment Agency | Open API | scoring | Live 2026-10-09 | EEA standard re-use policy (attribution) |
| Leerstandsmelder.de — public reports of empty buildings Leerstandsmelder (Gängeviertel e.V., Hamburg) Shown while we ask Leerstandsmelder for permission. Reports since 2016 only, with the address, the month reported and a link to each entry; not checked by EHC. Each point says when a report has since been marked demolished, lived in, in interim use or rebuilt on Leerstandsmelder, and the owner type the reporter gave (private owners are never named). | Asking for permission | 0 | Pending 2026-10-09 | Credited to Leerstandsmelder.de; asking for permission |
| Open-ended property funds: buildings they report partly empty Open-ended real-estate funds (each point names its fund and report) German and Austrian open-ended public property funds must list every property with its vacancy (or letting) rate in their annual and half-year reports. scripts/reuse/import-fund-reports.ts reads those lists; properties at 10 % vacancy or more are shown, those at 25 % or more count as evidence. | Open download | 0 | Live 2026-10-09 | Published fund report (KAGB / KARBV property list), cited per point |
| Co-working spaces, department stores, banks, hotels and cinemas listed as permanently closed Overture Maps Foundation (closure data: BrightQuery company records) Places with operating_status "permanently_closed" in the monthly Overture release, read by scripts/reuse/import-overture-closures.ts and matched to the building they sit in. A closed business is usually one unit; names are shown only for companies, never for sole traders. | Open download | 0 | Live 2026-10-09 | CDLA Permissive 2.0 (Overture Maps Foundation) |
| Land without current use and stalled construction, mapped from satellite imagery (Copernicus Urban Atlas 2006–2018) European Environment Agency — Copernicus Land Monitoring Service Urban Atlas class 13400 (brownfields, demolition sites and gaps in the built-up area, 0.25 ha and up) compared across the 2006, 2012 and 2018 editions, so each plot says how long it has stood unused; plus construction sites (13300) already under way in 2012, and 2012 construction sites left unused by 2018. Read from the EEA's open ArcGIS services, the same way in every radar city. The 2021 edition (Copernicus Data Space) drops plots built on since 2018 where scripts/reuse/import-urban-atlas-2021.ts has been run. Points are context, never evidence of vacancy. | Open API | 73 | Live 2026-10-09 | Copernicus open data (© European Union, Copernicus Land Monitoring Service 2006–2021, EEA) |
| Stalled construction and buildings held by insolvent developers EHC research (dated press and court sources per point) Signa, Adler/Consus and other developer insolvencies since 2022 and stalled sites, each with its latest dated status (src/scripts/data/reuse/stalled-projects.json; news leads from scripts/reuse/mine-news.ts are reviewed before they join). | EHC research | 0 | Live 2026-10-09 | Cited publisher per point |
| Church buildings the dioceses and regional churches plan to give up Catholic dioceses and Protestant regional churches (their building plans), via EHC research Buildings a church body’s published building plan or recent reporting names as to be given up, without church funding, for sale or lease, or profaned (src/scripts/data/reuse/church-plans.json and brussels-churches.json). | EHC research | 0 | Live 2026-10-09 | Cited publisher per point |
| Named buildings and sites from EHC research (each with its own source) European Housing Coop research Includes the library’s public lighthouse conversions (src/scripts/data/reuse/lighthouses.json), shown under "Already converting" with a link to their library page. | EHC research | 9 | Live 2026-10-09 | Facts cited to their publishers |
| Year built and listing: OpenStreetMap building tags OpenStreetMap contributors start_date / construction_date and heritage / listed_status of the OpenStreetMap outline a record is matched to, where no register answers. Read with the outline match, not a separate query. | Open API | scoring | Live 2026-10-09 | ODbL 1.0 (© OpenStreetMap contributors) |
| Office buildings mapped on OpenStreetMap OpenStreetMap contributors (via overpass.openstreetmap.fr) | Open API | 162 | Live 2026-10-09 | ODbL 1.0 |
| Brownfield land mapped on OpenStreetMap OpenStreetMap contributors (via overpass.openstreetmap.fr) | Open API | 33 | Live 2026-10-09 | ODbL 1.0 |
| Buildings recorded as ruins in the real-estate cadastre Geodetska uprava Republike Slovenije (GURS) — real-estate cadastre (kataster nepremičnin), KN WFS | Open API | 100 | Live 2026-10-09 | CC BY 4.0 — Geodetska uprava Republike Slovenije, kataster nepremičnin |
| Buildings with at least 150 m² of units recorded as ruins Geodetska uprava Republike Slovenije (GURS) — real-estate cadastre (kataster nepremičnin), KN WFS | Open API | 7 | Live 2026-10-09 | CC BY 4.0 — Geodetska uprava Republike Slovenije, kataster nepremičnin |
| Large buildings wholly owned by the City, its housing fund, the State or the State holding (offices, shops, stores, works) Geodetska uprava Republike Slovenije (GURS) — real-estate cadastre (kataster nepremičnin), KN WFS | Open API | 154 | Live 2026-10-09 | CC BY 4.0 — Geodetska uprava Republike Slovenije, kataster nepremičnin |
| Buildings named in the news (each with its article) Local and national press, read by EHC Buildings the news reports empty, for sale or to let, to be demolished or being converted (src/scripts/data/reuse/news-building-leads.json; rules in src/lib/reuse/news-layer.ts). A report that names a building already on the map is shown on its card instead of a second point; one an open source contradicted, or that says the building is in use, is left out. Not checked on site. | EHC research | 1 | Live 2026-10-14 | Facts with a link to the article; the one-line summary is ours — no article text is republished |
| Probable era: estimated from a street photo (Panoramax, Mapillary, Google Street View) Panoramax and Mapillary contributors; Google Street View (research use agreed with Google, 14 Oct 2026); estimate by EHC with a vision model Where no register dates a building: its era read from a Panoramax or Mapillary photo looking at it — Google Street View only where no open photo answers (scripts/reuse/estimate-photo-eras.ts), only when the building is clearly visible and the model is confident, and only as “before 1945” or “1945 or later” — the split it got right for 89% of buildings with a register year in Amsterdam and Paris, and 89% from Street View pictures alone (photo-eras/calibration.json). An estimate: a sentence in the conversion check, never points. | Open API | scoring | Live 2026-10-14 | Open photos CC BY-SA 4.0 or Licence Ouverte 2.0 (per picture); Street View read for research only, never stored or shown; only the estimated era is published, never a photo |
Open data cannot see everything. Tell us about a building in Ljubljana that stands empty or barely used; once we have checked it, it joins the map under “Reported by visitors (checked)”.
The nearest radars. All 149 cities in the atlas
The figure on each card: empty buildings on record.