Spain Public Auctions (BOE) — Judicial & Tax Auctions as Clean JSON

Every public auction in Spain, structured. Live feed from the official Spanish auction portal (subastas.boe.es): judicial foreclosures, tax-agency and administrative auctions — with the numbers and the asset data investors actually need, one JSON record per auction.

The official portal is a search form with no API. This Actor turns it into data: "give me every open auction in Madrid with its auction value, minimum bid, deposit, address, cadastral reference and charges."

What you get per auction

{
  "id": "SUB-JA-2025-246146",
  "type": "JUDICIAL EN VÍA DE APREMIO",
  "startsAt": "2025-04-18T18:00:00+02:00",
  "endsAt": "2026-07-05T12:27:24+02:00",
  "claimedAmountEur": 6953.30,
  "auctionValueEur": 325095.43,
  "appraisalValueEur": 325095.43,
  "minBidEur": null,
  "bidIncrementEur": 6501.90,
  "depositEur": 16254.77,
  "boeAnnouncement": "BOE-B-2025-13955",
  "url": "https://subastas.boe.es/detalleSubasta.php?idSub=SUB-JA-2025-246146",
  "assets": [
    {
      "description": "VIVIENDA SITA EN C/DEL BARCO Nº27 4ºB MADRID 28004 57 M",
      "cadastralRef": "28108000205725",
      "address": "C/BARCO Nº27 4ºB",
      "postalCode": "28004",
      "city": "MADRID",
      "province": "Madrid",
      "possessionStatus": "No consta",
      "visitable": "No",
      "charges": "SIN CARGAS",
      "registryInfo": "FINCA 2213 REGISTRO DE LA PROPIEDAD Nº27 MADRID"
    }
  ]
}

Market comparison built in (v0.2)

Real-estate auctions are enriched with live market stats for the asset's own city (source: fotocasa listings):

"marketComparison": {
  "source": "fotocasa",
  "zoneSlug": "getafe",
  "sampleSize": 31,
  "medianAskingEur": 299000,
  "medianPerM2Eur": 3333,
  "assetSurfaceM2": 75,
  "estMarketValueEur": 249975,
  "estDiscountPct": 34.2
}

estDiscountPct is the number every auction investor computes by hand: auction value vs what the zone actually asks per m². Note: zone stats come from a first-page sample of asking prices — treat them as a screening signal, then verify. Disable with compareMarket: false.

Why investors use it

• The spread is visible: auction value vs appraisal vs minimum bid — the discount math is one subtraction away.
• Cadastral reference included: join against Catastro data, comparables or your own models.
• Charges and possession status: the two fields that turn a "bargain" into a money pit — surfaced, not buried in a PDF.
• ISO dates: bidding deadlines you can sort, filter and alert on.
• Official source: the State's own auction portal, every record with its BOE announcement id.

Use cases

• Real-estate investors: daily sweep of open auctions in your provinces, filtered by value band.
• Proptech / data teams: structured feed to enrich with Catastro, idealista comps or your AVM.
• Lawyers / insolvency pros: track auctions tied to specific proceedings.
• AI agents: "find me flats at auction in Madrid under 200k ending this month" — one tool call.

Input

Field	Description
status	EJ in progress (default) · PU upcoming · CO concluded
provinces	Names or INE codes: ["Madrid", "08"] — empty for all of Spain
maxAuctions	Cap per run (default 50)
includeAssets	Fetch per-auction asset details (default true)
minAuctionValue / maxAuctionValue	Value band filter (EUR)

Use with AI agents (MCP)

This Actor is exposed as a tool on the Apify MCP Server:

{
  "mcpServers": {
    "spain-boe-auctions": {
      "url": "https://mcp.apify.com?tools=jdepablos/spain-boe-auctions",
      "headers": { "Authorization": "Bearer <APIFY_TOKEN>" }
    }
  }
}

Pairs well with Spanish Company Feed (BORME) — same official-source discipline, company events instead of auctions.

Pricing

Pay per event: one flat fee per auction returned, asset details included. Failed fetches are never charged.

FAQ

How fresh is the data? It is scraped live from the official portal at run time — auctions open and close daily; run it on a schedule for monitoring.

Vehicles and other assets too? Yes — the portal covers real estate, vehicles and other seized assets. Asset fields adapt (plate/brand/model for vehicles).

Why is minBidEur sometimes null? "Sin puja mínima" — the auction has no minimum bid, which is exactly the kind you may care about.

More data tools by this developer

• eBay Sold Price Appraiser — real market value from confirmed sales
• Second-hand Deal Scanner ES — Vinted/Wallapop/Milanuncios deals vs eBay sold
• Spanish Company Feed (BORME) — daily registry acts as JSON
• Trademark Watch (TMview) — new filings & opposition deadlines