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Reuse radar

Graz

Graz publishes no data on empty buildings and has no city-wide vacancy survey: a 2021 council motion put empty flats at 6,000 to 15,000, and although Styria has allowed a vacancy levy since April 2022, no Graz decision to levy it was found. The radar therefore shows where reuse is in motion — the Rösselmühle and Postgarage area, the former Kirchnerkaserne, the City-bought Tennenmälzerei — plus the office buildings and brownfields mapped on OpenStreetMap.
Vacant office spaceNot yet measured
Empty buildings on record550 confirmed
On the map479buildings and sites from 5 open sources
Homes potential—not in the economic model’s office data yet

Office figures: No Graz office vacancy figure was found in published market reports (searches of 9 October 2026 returned only German and Swiss cities); OpenStreetMap maps 294 office buildings in the city's box. Map built 2026-10-09.

Graz city profileReuse atlas: all of Europe

The map

Every building a record says stands empty, one point per building: filter by type, size and how sure the evidence is, and open one to see who says so. “Opportunities” switches to the co-op lens: public land, conversion potential and projects already under way, every source as its own layer.

No register or survey of empty buildings or flats exists for Graz: estimates run from 6,000 to 15,000 empty flats (council motion, 2021), and the survey the City office was preparing in 2022 has not been published.

Loading map…

0 empty buildings · colour = type, dark ring = confirmed

Check any building in Graz: could it become homes, and could the EHC model work there?

Districts where conversion makes sense

Where empty offices, the right zoning and a working neighbourhood come together — and what could go wrong.

A hand outlining a neighbourhood on a city map, with small houses drawn inside

Gries (Rösselmühle, Postgarage, Griesplatz)

A 1.375 ha commercial area west of Griesplatz whose owners want homes and work space, with a council-adopted framework plan and a housing co-operative society now among the owners.

  • Framework plan adopted by the City Council on 12 March 2026
  • Postgarage sold to the Rottenmanner Siedlungsgenossenschaft in October 2025, beside the non-profit developer ÖSW
  • Architecture competition is the next step

Risk: The Postgarage is a listed building with a running club lease, about 40% of the area stays commercial, and noise limits the number of homes (up to about 200).

2 sources

Jakomini (Kirchnerkaserne)

A former barracks site where the City has opened a district sports ground and is about to start a park, under one master plan that also covers municipal housing (Wohnen Graz).

  • Bezirkssportplatz opened in September 2025
  • Ivanka-Gruber park: design competition June 2025, construction from summer 2026
  • Master plan covers the sports ground, the park and Wohnen Graz

Risk: The site is being filled with sport and green space; the City's list does not say which barracks buildings remain or who owns them.

1 source

Reininghaus (Tennenmälzerei)

The City bought the listed maltings and opened it for interim use while the new quarter is built around it: the model for heritage buildings it cannot yet refurbish.

  • Interim use since August 2024: 600 m² of event space and 600 m² of neighbourhood space
  • Reuse materials and a new roof after storm damage

Risk: Interim use only: a scaffold shell protects the building until a later general refurbishment, and the programme is culture and neighbourhood activity, not homes.

1 source

Owners and routes in

Who controls the space, and what a housing cooperative can actually do with them.

A door key on a doorstep with a drawn path leading to an open door
Public owner

Stadt Graz — Abteilung für Immobilien (interim uses)

The City buys heritage buildings (the Tennenmälzerei) and opens them for interim use at low cost with reuse materials, until a general refurbishment. A co-op can propose an interim or long-term use for a City-owned building without a programme to the property department.

1 source
Allocation rule

Stadt Graz — building rights for non-profit developers

The City has granted non-profit developers building rights on City land for municipal flats — in 2010, 55 years at EUR 1 a year for Mariatroster Straße 186, with the City's allocation right — because the Styrian subsidy rules make the municipality bear land and servicing costs and non-profit developers build. A co-op that is a registered non-profit developer can bid for such a right.

1 source
City agency

Stadt Graz — Abteilung für Immobilien (purchase wish list)

The City says it is looking to BUY built or unbuilt land for homes in every district (1,200 to 6,000 m² of usable floor area) and green space in Lend, Gries and Jakomini, so an owner or a co-op with an empty building can offer it to the same desk — or offer it together with a non-profit developer.

1 source

Signals to watch

Decisions, auctions and closures that change what becomes available, and when.

  1. 2026-05
    Study: Graz grew 18% since 2010 and cannot expand municipal housing

    EcoAustria's study for the non-profit developer ÖWG says Graz's population grew about 18% between 2010 and 2024, that the City is the most indebted state capital per resident and that Wohnen Graz lost EUR 5.5m in 2025 despite a EUR 3.0m City grant. It is commissioned by a non-profit developer.

    1 source
  2. 2026-03-12
    Framework plan for Rösselmühle and Postgarage adopted

    The City Council approved the plan for the 1.375 ha area; it is the basis for rezoning and a development plan.

    1 source
  3. 2025-10-06
    Postgarage sold to a housing co-operative society

    The Rottenmanner Siedlungsgenossenschaft joins ÖSW as second non-profit developer; the club lease continues.

    1 source
  4. 2022-04-28
    Styria allows a vacancy levy; Graz opposition asks for it

    A SPÖ council motion records that the Styrian Landtag had just passed a spatial-planning law letting municipalities charge for flats unused for over six months, and says the responsible office was preparing a vacancy survey.

    1 source

Sources and freshness

13 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.

Show every source, its licence and when we last read it
SourceAccessRecordsStatusLicence
OpenStreetMap disused/abandoned tags and brownfields
OpenStreetMap contributors
Open API106Live
2026-10-09
ODbL 1.0 (© OpenStreetMap contributors)
Rail, S-Bahn and U-Bahn stations (OpenStreetMap)
OpenStreetMap contributors
Open APIscoringLive
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 download139 buildings sizedLive
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 APIscoringLive
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 permission0Pending
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 download0Live
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 download0Live
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 API73Live
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 research0Live
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 research0Live
2026-10-09
Cited publisher per point
Named buildings and sites from EHC research (each with its own source)
European Housing Coop research
EHC research5Live
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 APIscoringLive
2026-10-09
ODbL 1.0 (© OpenStreetMap contributors)
Office buildings mapped on OpenStreetMap
OpenStreetMap contributors (via overpass.openstreetmap.fr)
Open API244Live
2026-10-09
ODbL 1.0
Brownfield land mapped on OpenStreetMap
OpenStreetMap contributors (via overpass.openstreetmap.fr)
Open API51Live
2026-10-09
ODbL 1.0

What this radar cannot see yet

  • No register or survey of empty buildings or flats exists for Graz: estimates run from 6,000 to 15,000 empty flats (council motion, 2021), and the survey the City office was preparing in 2022 has not been published.
  • The City's open data (CC BY 4.0) hold only counts of buildings, addresses and units per census tract from the national register; the building-level register behind them is not open and the BEV download answers 403.
  • The City's project list names places and plans but no coordinates, and says nothing about which barracks or mill buildings stand empty.
  • Court auctions in Graz yield one whole building (Schillerplatz 7) and two house shares among the 82 Styrian edicts of 9 October; the notices name debtors and were not read.
  • Federal (BIG) and railway property for sale in Graz is not published in a list that could be read; ask both for their disposal pipelines.
  • Floor areas come from the Global Building Atlas: the City's open height model (Höhenmodell, CC BY 4.0) could give measured heights, but no ready building-height service was found.

Know an empty building we have missed?

Open data cannot see everything. Tell us about a building in Graz that stands empty or barely used; once we have checked it, it joins the map under “Reported by visitors (checked)”.

A phone held up to photograph an empty shopfront, with a map pin drawn above it

We publish the address, the kind of building and your description once we have checked it — never your email. Please do not name the people who own or live in a building.

Radars nearby

The other radars in the same country and the nearest beyond. All 134 cities in the atlas

The figure on each card: empty buildings on record.

Bologna, Italy87empty buildings on recordBratislava, Slovakia175empty buildings on recordBrno, Czechia181empty buildings on recordBudapest, Hungary392empty buildings on recordLjubljana, Slovenia47empty buildings on recordMunich, Germany316empty buildings on recordOstrava, Czechia42empty buildings on recordPrague, Czechia1,058empty buildings on recordSarajevo, Bosnia & Herzegovina61empty buildings on recordVerona, Italy55empty buildings on recordVienna, Austria229empty buildings on recordZagreb, Croatia204empty buildings on record