Question 1

What are online auctions and how do they work in Spain?

Accepted Answer

Since 2015, all [public auctions](/en/subastas-publicas) in Spain (judicial, notarial and administrative) have moved from in-person to fully online (electronic) format. The entire bidding process for [seized assets](/en/subastas-embargados) now takes place over the internet, centralised on the [BOE](/en/subastas-boe) Electronic Auction Portal. This allows any investor to bid for [apartments](/en/subastas-publicas-viviendas), vehicles and commercial premises from their computer with full legal transparency and security.

Question 2

What do I need to participate in a telemátic auction?

Accepted Answer

To bid online officially you need two things. First, be registered on the [BOE Portal](/en/boe-auctions) using a digital certificate, electronic ID or Cl@ve. Second, to place an offer you must make a prior deposit (consignación) via bank transfer or the official payment gateway — generally 5% of the asset's value. If you do not win the auction, the money is returned automatically to your account.

Question 3

Is it safe to buy apartments or vehicles in internet auctions?

Accepted Answer

The telemátic process through the BOE is 100% secure and official. However, the risk is not in the platform but in the asset itself: when you buy online you acquire the asset "as is", inheriting possible registered liens, prior debts or existing tenants. subastAI's AI audits registry entries and official files on your behalf, showing you the hidden risks before you click to bid.

Question 4

How long does an electronic auction last and how do I bid?

Accepted Answer

As a general rule, once an online auction opens on the official portal it remains active for 20 calendar days. The system allows manual bids or "reserve bids" up to a maximum amount. The final day is critical as the system may extend the deadline if last-minute bids arrive. subastAI's financial dashboard lets you track these dates and calculate your ideal maximum bid to protect your return.

Question 5

What advantages does subastAI offer over the official BOE portal?

Accepted Answer

Although the BOE Portal is the official execution platform, its interface is complex, lacks personalised alerts and offers no financial analysis of assets. subastAI centralises all [online auctions](/en/subastas-online) in Spain in a modern search engine, calculates real market values, detects legal liens with AI and provides instant notifications so you never miss an investment opportunity.

Preguntas Frecuentes — Online

What are online auctions and how do they work in Spain?

What do I need to participate in a telemátic auction?

Is it safe to buy apartments or vehicles in internet auctions?

How long does an electronic auction last and how do I bid?

What advantages does subastAI offer over the official BOE portal?