Portal comparison
Home auction portals in Spain: a guide
Compare BOE, AEAT and TGSS with a home-auction catalogue: what each is for, where to bid and what limits to check.
Updated · 5 min read
What each portal is for
Editorial comparison published by Subastas de Viviendas. This is an indicative selection, not a ranking or an exhaustive comparison.
| Source and role | Useful for | How to take part | Scope and limits |
|---|---|---|---|
| BOE Auction Portal (official site, opens in a new tab) The national portal for judicial, notarial and tax electronic auctions. | Searching notices by authority, type, status, location or reference, and checking their documents. | Register, provide the deposit and place bids in the BOE portal under the terms of the notice. | It covers proceedings handled through this portal. Check the responsible authority and the current notice. |
| Spanish Tax Agency (AEAT) (official site, opens in a new tab) The Agency’s information and search page for assets it auctions; AEAT says its auctions take place through BOE. | Finding assets in AEAT tax auctions and checking the Agency’s information and alerts. | Bids are placed through the BOE Auction Portal, as directed by the AEAT notice. | It covers AEAT auctions. It does not replace the official BOE notice or cover other authorities. |
| Spanish Social Security Treasury (TGSS) (official site, opens in a new tab) The official TGSS portal publishing seized property offered at auction. | Searching property and other assets seized by Social Security and reading the proceeding information. | Follow the method, deposit and deadlines in the official notice; confirm details with the responsible provincial office or enforcement unit. | It covers auctions promoted by TGSS. Confirm the current status and any changes with the responsible office. |
| Subastas de Viviendas An independent catalogue indexing residential notices from BOE and TGSS. | Searching listings, exploring the map, saving favourites, comparing homes and preparing scenarios with the calculator. | Bidding is not available here. Always use the official channel named in the notice. | Coverage is partial. Search, listings, the map, favourites, the comparator and calculator are free. Alerts and reports are optional paid services; check current pricing and availability on the pricing page. |
Choose by the authority running the auction
For a judicial, notarial or tax auction, start with the BOE Auction Portal and check the responsible authority in the notice. The Spanish Tax Agency (AEAT) page helps you search and follow its auction notices, but bids are placed through the BOE portal. If the Spanish Social Security Treasury (TGSS) is running the auction, check its dedicated portal and the notice instructions.
There is no official portal listing every home auction. The table compares what each option does, how participation works and what it covers. For more on these channels, see our article on BOE and Social Security auctions. For other options, including State Heritage and private auction sites, see our directory of where to search and how to take part.
Use a catalogue to find and organise homes
The independent Subastas de Viviendas catalogue indexes residential notices from BOE and TGSS. It lets you search listings, explore the map, save favourites, compare homes and prepare scenarios with the calculator. Search, listings and these tools are free. Alerts and reports are optional paid services; check current pricing and availability.
Use the catalogue to find and organise options, not to take part in an auction: it does not accept bids and its coverage is not complete. To bid, always follow the official channel and terms in the source notice.
Search by municipality and check each listing
In the catalogue search, try a municipality, address or reference, then narrow by province, status or property type. Check that a result describes the home you mean: addresses and references may look similar. Our guide to reading an auction listing suggests an order for checking its location, type, area and identifiers.
Upcoming and open auctions appear by default. Choose “Bidding now” to see auctions currently accepting bids, or use “All statuses” and the history to include completed notices. Confirm dates, status and description in the official portal, as they can change.
Take part only through the official channel
Open the listing’s official-source link and compare its reference, municipality, description, dates and terms. If it does not open the exact notice, search the portal by its published reference. Read the documents before deciding. Our guide to buying a home at a BOE auction gives a general overview; the instructions for the specific proceeding apply.
A catalogue result is a record, not necessarily one proceeding: there may be several lots, and a lot may group a home with other assets. For completed BOE auctions, a published highest bid does not confirm an award; check the final result in the official source.
Broaden the search if no results appear
No results may mean the filters are too narrow, the reference is written differently, the notice has not been indexed yet or it was published through another channel. Clear filters, try the municipality or a different reference, and check BOE, AEAT or TGSS according to the authority in the notice. No catalogue covers every auction.
Choose the official source by the body running the auction and keep the notice link so you can check for changes. This guide helps you choose where to search; it does not assess a bid or predict the result.
Official sources
Check the original source
Use the source document for the current information and participation terms.
Scope and professional advice
This guide explains how to use published information. It does not replace the official notice or documents for a proceeding, and it is not legal, tax or financial advice. Many source documents are in Spanish; this English text is not a certified translation.