Public data API

The facts on these pages are free to use as JSON. No key and no sign-up. Every response is read-only and built from public registers.

The rules

Base URL: https://buildable.ie/api
Rate limit: 120 requests a minute per IP address. Over it you get HTTP 429 with a Retry-After header.
Caching: responses are cached for an hour. The data changes about once a day, so poll no more often than that.
Attribution: Source: Buildable (buildable.ie), from public registers. Link to the page the fact came from. Rows carry a source_url for the original record where there is one.
What’s not here: scores, reasons, owner contacts and paid features. People’s names are never included.

Request	Returns
`GET /public/land/signal/{signal}` Parameters: la, limit	Sites with one signal (derelict, rzlt, council-disposals, expiring, stalled, permitted-not-built, public-land) in a council or all Dublin, with counts and sources.
`GET /public/sites/{slug}`	One site's public facts: location, area, zoning, signals and their sources.
`GET /public/sites/sitemap` Parameters: offset, limit	Every public site's slug and when its facts last changed.
`GET /public/land/hub` Parameters: la, lea	A council or electoral area: zoning, RZLT, unbuilt permissions, disposals, starts.
`GET /public/land/derelict/longest` Parameters: la, limit	Sites longest on the derelict sites registers, oldest entry first.
`GET /public/developers` Parameters: limit	Companies with homes permitted or applied for in Dublin in the last five years.
`GET /public/developers/{slug}`	One company's permissions, homes started and not started, schemes and nearby signal sites.
`GET /public/zoning`	Every Dublin zoning objective in the plans' own words, with site counts.
`GET /public/zoning/{la}/{code}`	One zoning objective: wording, plan, sites so zoned and their signals.
`GET /public/calendar/events` Parameters: la	Permission expiries, RZLT dates and s.183 meetings (also as .ics at /calendars/{feed}.ics on the website).

la is a council code: DCC, DLR, FINGAL or SDCC. Leave it out for all of Dublin.

curl 'https://buildable.ie/api/public/land/signal/derelict?la=DCC&limit=5'

Subscribe to permission expiries, RZLT deadlines and council land disposal meetings as a calendar: dublin.ics · dcc.ics · dlr.ics · fingal.ics · sdcc.ics.

A summary for language models is at /llms.txt, with today’s figures at /llms-full.txt.

A read-only MCP endpoint for assistants is ready but not switched on yet. .

Need more than this, such as bulk exports or higher limits? . See also how it works.