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Reuse radar

Poznań

Poznań's national topographic database records 177 buildings as out of use and 32 as ruined; the biggest are three industrial buildings of 10,000 to 27,000 m² footprint on the former ZNTK rolling-stock works at Dębiec. The City's property portal listed 32 offers on 9 October 2026, six of them built properties, among them a 3,551 m² building at Ratajczaka and Kościuszki in the Old Town zoned for education and science. Offices stand 11.5% empty, about 78,000 m², against a regional average of 17.3%.
An empty building in Poznań with homes, balconies and neighbours drawn onto it in ink
Empty buildings on record
314
from 12 open sources
Vacant office space
78,000 m²
11.5% of the stock
Homes potential
—
not in the economic model’s office data yet

Office figures: BNP Paribas Real Estate Poland, end of Q2 2026 — 11.5% of the stock vacant, about 78,000 m² (read from the report chart); the eight-city regional average is 17.3% (PINK). Kraków and Poznań together took over half of the second-quarter leasing, and Poznań holds 45% of the space under construction in the regional markets. Map built 2026-10-09.

Empty buildings in Poznań

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.

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Colour = type of building named officially likely reported
Missing a building?

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

7 more buildings in Poznań reported in the news, not yet on the map

The articles do not give an address we could place, so these have no pin yet. From news reports, summed up in our own words with a link to each article — not checked on site by EHC.

  • Building at Paderewski/Szkolna, Paderewskiego and Szkolna — reported emptyThe building stands empty; an investor wants to create a hotel and restaurant Głos Wielkopolski (2024-09-17)
  • Former Garbary power station — reported conversion planned · formerly public building · owner: RobygThe former power-station buildings are planned for restoration and commercial uses including offices, a hotel, and retail Rzeczpospolita (2026-01-30)
  • Górczyńskie Centrum Handlowe — reported demolition planned · formerly retail · Company-ownedListed among Poznań shopping centres knocked down, shrinking competing retail space. Property Forum (CEE) (2026-08-25)
  • kamienica róg Paderewskiego i Szkolnej, Paderewskiego / Szkolna — reported conversion planned · formerly residential building · owner: Paderewski PoznańAfter a long-running squat ended in a settlement, the owner planned to turn the corner tenement into a Sure Hotel with a restaurant. Pasażer.com (2017-12)
  • Młyn Hermanka — reported empty · formerly industrial buildingGłos Wielkopolski reported it standing empty; formerly mill. Głos Wielkopolski (2026-08-02)
  • Wildecki Dom Kultury — reported empty · formerly public buildingHeadline: councillors hope to win back the empty former Wilda culture house. Głos Wielkopolski (2026-05-11)
  • Zabytkowe hale Aquanetu — reported for sale or to let · formerly industrial building · owner: AquanetAquanet is seeking offers for the ruined historic halls and old sewage pumping station Gazeta Wyborcza — Poznań (2026-03-24)

Where conversion makes sense, and who to talk to

The districts where empty space, the right zoning and a working neighbourhood come together, and the owners and programmes that open a door. 78,000 m² of offices stand empty (11.5% of the stock).

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

Dębiec and Wilda — the former ZNTK works

The largest block of recorded out-of-use industrial floor space in the city: three buildings of 10,253, 20,359 and 26,837 m² footprint on the old rolling-stock works, with further halls, offices and ruins around them.

  • 50 BDOT10k records within 1.5 km, 19 of them of 500 m² or more, 81,209 m² in all
  • OpenStreetMap maps the site as 'former ZNTK', with several buildings mapped as ruins and a former office building

Risk: A walled rail-works site of heavy industrial halls: remediation, ownership unknown, and heritage rules for the older halls.

1 source

Jeżyce and Garbary

The north-west holds the redevelopments already under way — the old slaughterhouse (Stara Rzeźnia) and the Gajowa tram depot — and a City-owned built plot at Dąbrowskiego and Polna.

  • Gajowa depot: vacant since 2010, Eiffage completing in Q4 2028; the hall is recorded out of use (record of 15 Apr 2026)
  • Stara Rzeźnia: about 5.5 ha bought from mBank by Vastint in 2018
  • 66 BDOT10k records within 2 km, 25 of them of 500 m² or more

Risk: The big sites are already in developers' hands; what is left is small and mostly the City's own plots.

3 sources

Stare Miasto and the station area

Two of the City's largest built plots on its portal (Ratajczaka and Kościuszki, Al. Niepodległości and Przepadek) lie here, beside the old Poznań Główny station building, which was empty in 2022.

  • Ratajczaka and Kościuszki: 3,551 m² built plot, offer in preparation
  • Al. Niepodległości and Przepadek: about 15,155 m² built, seventeen parcels
  • 45 BDOT10k records within 1.5 km, 19 of them of 500 m² or more

Risk: Zoning is for education and science or a multi-family zone with infrastructure, not simply housing; the station is a heritage building under PKP S.A. and talks with the City were open in 2022.

3 sources

Signals to watch

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

  1. 2026-10-0932 offers on the City property portal

    Six are built properties and 26 unbuilt plots; the large ones are zoned for production, warehouses and services (Folwarczna 108,035 m², Obodrzycka 48,016 m², Franowo 26,591 m²).

    1 source
  2. 2026-08Office vacancy 11.5%, about 78,000 m²

    Against a regional average of 17.3% (PINK); Poznań took a large share of the second quarter's leasing.

    1 source
  3. 2025-12-17City offers the 48,016 m² Żegrze plot again

    An unbuilt plot zoned for production and warehouses, starting price PLN 22.3m, tender planned for the second quarter of 2026; first offered in 2023.

    1 source
3 earlier signals
  1. 2025-11-03
    Gajowa tram depot redevelopment starts

    Eiffage will build two residential blocks and revive the historic hall; completion planned for Q4 2028.

    1 source
  2. 2022-12-07
    Old Poznań Główny station still empty

    PKP S.A. runs preliminary design work with the City and the conservator; a 2020 letter of intent had aimed at 2023.

    1 source
  3. 2018-04-30
    Vastint buys the old slaughterhouse from mBank

    About 5.5 ha near Garbary, with about 70,000 m² planned.

    1 source

Sources, and what we cannot see

20 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.

Every source, its licence and when we last read it
SourceAccessRecordsStatusLicence
OpenStreetMap disused/abandoned tags and brownfields
OpenStreetMap contributors
Open API161Live
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 download280 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 API107Live
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
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 research8Live
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)
Buildings recorded out of use in the national topographic database (BDOT10k)
Główny Urząd Geodezji i Kartografii (GUGiK) — BDOT10k, county package 3064 (Poznań)
Open download177Live
2026-10-09
Free reuse without restriction (Prawo geodezyjne i kartograficzne art. 40a; GUGiK: no fees) — credit GUGiK. Street addresses from OpenStreetMap contributors' address points (ODbL; in Poland the national address points of GUGiK)
Buildings recorded as ruined in the national topographic database (BDOT10k)
Główny Urząd Geodezji i Kartografii (GUGiK) — BDOT10k, county package 3064 (Poznań)
Open download32Live
2026-10-09
Free reuse without restriction (Prawo geodezyjne i kartograficzne art. 40a; GUGiK: no fees) — credit GUGiK. Street addresses from OpenStreetMap contributors' address points (ODbL; in Poland the national address points of GUGiK)
Office buildings of four storeys or more in the national topographic database (BDOT10k)
Główny Urząd Geodezji i Kartografii (GUGiK) — BDOT10k, county package 3064 (Poznań)
Open download314Live
2026-10-09
Free reuse without restriction (Prawo geodezyjne i kartograficzne art. 40a; GUGiK: no fees) — credit GUGiK. Street addresses from OpenStreetMap contributors' address points (ODbL; in Poland the national address points of GUGiK)
Industrial and warehouse buildings of three storeys or more in the national topographic database (BDOT10k)
Główny Urząd Geodezji i Kartografii (GUGiK) — BDOT10k, county package 3064 (Poznań)
Open download88Live
2026-10-09
Free reuse without restriction (Prawo geodezyjne i kartograficzne art. 40a; GUGiK: no fees) — credit GUGiK. Street addresses from OpenStreetMap contributors' address points (ODbL; in Poland the national address points of GUGiK)
Built City of Poznań properties on its property portal (in preparation, designated for sale or at tender)
Urząd Miasta Poznania — Wydział Gospodarki Nieruchomościami (Nieruchomości do zbycia)
Open API6Live
2026-10-09
No licence stated — City of Poznań public information (Wydział Gospodarki Nieruchomościami), used with credit to Urząd Miasta Poznania
Unbuilt City of Poznań plots on its property portal
Urząd Miasta Poznania — Wydział Gospodarki Nieruchomościami (Nieruchomości do zbycia)
Open API26Live
2026-10-09
No licence stated — City of Poznań public information (Wydział Gospodarki Nieruchomościami), used with credit to Urząd Miasta Poznania
OpenStreetMap: land mapped as brownfield
OpenStreetMap contributors (via overpass.openstreetmap.fr)
Open API23Live
2026-10-09
ODbL 1.0
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 research11Live
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 APIscoringLive
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

What this radar cannot see yet

  • Poznań publishes offers, not vacancies: no register of empty municipal flats or buildings was found, and the City's built-property offers do not say whether a building is empty.
  • The City's own spatial portal (sipgeoportal.geopoz.poznan.pl) exposes no open EGiB or building service we could find in the time available, so storeys and floor area come from BDOT10k; bip.poznan.pl's robots.txt disallows its JSON and XML interfaces, so the bulletin's sale lists were not read.
  • BDOT10k flags lag reality and name no owner; the ZNTK works and the other large halls need an owner check and a site visit.
  • A regional newspaper report on the heritage villa Sołtysówka (Głogowska 37) answered HTTP 403 and was not read.

Know an empty building we have missed?

Open data cannot see everything. Tell us about a building in Poznań 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 149 cities in the atlas

The figure on each card: empty buildings on record.

Berlin, Germany1,902empty buildings on recordBydgoszcz, Poland285empty buildings on recordDresden, Germany347empty buildings on recordGdańsk, Poland421empty buildings on recordKraków, Poland356empty buildings on recordŁódź, Poland485empty buildings on recordLublin, Poland205empty buildings on recordOstrava, Czechia42empty buildings on recordPrague, Czechia1,064empty buildings on recordSzczecin, Poland355empty buildings on recordWarsaw, Poland1,369empty buildings on recordWrocław, Poland680empty buildings on record