Development Land Data: Ireland Zoned Land & French Brownfield Sites
Every zoned or brownfield development site, with the local market alongside it, in one download.
Ireland, France, Scotland and Switzerland, all included in the 30M Data subscription: every parcel on Ireland's Residential Zoned Land Tax maps, and every brownfield site in France's national inventory. Each row comes with the local figures you'd otherwise gather by hand.
Ireland: every residentially zoned site, with the local market
Every parcel on Ireland's Residential Zoned Land Tax (RZLT) maps: 296,293 parcels, including about 21,000 sites of 0.4 ha (about 1 acre) or more and about 10,000 of 1 ha or more.
For each parcel
- Location: point, local electoral area and county
- Zoning, and area in hectares and acres
- The 2027 draft-map changes: 3,530 parcels proposed for inclusion (about 1,989 ha) and 720 proposed for removal
The local market, per parcel
- Median sale price (county) and rent (local area)
- Price and rent change over 1 and 5 years
- New-build share
- Planning applications and grant rate, median decision days, homes granted
- Housing completions
Distance to the nearest
Primary school, secondary school, shop, GP or pharmacy, and railway station.
Sources and updates
DHLGH RZLT maps (CC BY 4.0), Property Price Register (PSRA), RTB/CSO rents, national planning applications (NPAD), CSO completions, Department of Education schools and OpenStreetMap (ODbL: the distance columns are share-alike). Maps are checked monthly (the draft each February, the final each January); market figures are refreshed daily.
RZLT liability is self-assessed; the local authority's published map is authoritative. Not legal or tax advice.
France: 36,000 brownfield sites, with commune market figures
36,238 brownfield sites from Cerema's Cartofriches inventory, about 34,400 of them still available.
For each site
- Site type, and status: potential, no project, with project, or reconverted
- Pollution flags and zoning
- Owner type: public body, company or private (no names)
- Building information
- Location: exact for sites owned by companies or public bodies, approximate (about 1 km) for others, and withheld for privately owned housing
Commune figures
- Flat and house price trends, and building-land and plot price levels
- Rents and housing permits
- Flood and other risk-prevention plans
- Property tax rates
- Local facilities, census and income
Sale-price figures are in the download only. In line with the re-use conditions of France's property sales data (DVF), we don't show them on this website.
Site areas are the owner's whole land unit as Cartofriches records it, not the brownfield's footprint.
All French sources are published under the Licence Ouverte 2.0.
Scotland: every vacant and derelict site
All 3,091 sites on the 2025 Scottish Vacant and Derelict Land Survey register, 8,861 hectares in all: the council, size, whether vacant or derelict, what it was used for, how long it has been empty, the council's view of when it could be developed, and the owner's category (never a name). A council summary ranks where the land is.
Switzerland: unbuilt building land in every municipality
For every Swiss municipality, the federal building-zone statistics: how much land is zoned for homes, mixed use, centres and employment, how much of it is still unbuilt, and how well it is served by public transport. For the Canton of Zurich, a yearly series adds how much zoned land was built on over the last 1, 5 and 15 years, and how many years of unbuilt residential land are left at the recent pace.
What you get
- An instant download: a zip of CSV files per country, with a README explaining every column.
- Ready for Excel, QGIS or any GIS tool: every row has a location (where the source allows one).
- Part of one monthly subscription that also includes the UK construction tender data. Your account page always serves the latest versions; cancel any time.
Licences
You can reuse the data commercially. Keep the attributions listed on the data sources & licence page; the OpenStreetMap-derived distance columns are under the ODbL, so anything you publish from them must be shared alike.