Buying a property at a public auction: essential guide for foreign investors

The real estate market on the Costa del Sol constantly attracts international investors looking for properties with added value. Many people imagine the possibility of acquiring a property below its market price, picturing how this step could transform their asset portfolio or enable the dream of living on the Mediterranean.

Current legal procedures have introduced significant changes in access to these assets, making transparency and digital security fundamental pillars of any process. Understanding the regulations and administrative requirements is essential for those operating from outside Spain, avoiding common pitfalls in local bureaucracy.

Beyond the economic opportunity that buying a property at a public auction represents, real success depends on the ability to correctly assess the registry encumbrances, the occupancy status and the hidden associated costs, factors that determine whether a bid becomes a profitable asset or an unexpected burden.

Types of public auctions in Spain and applicable regulations

Forced sale procedures are mainly divided between judicial and administrative auctions. The former originate from courts following mortgage procedures or debt claims, while the latter are carried out by public bodies such as the Tax Agency or the Social Security to recover unpaid taxes.

Since April 2025, Organic Law 1/2025 has transformed these procedures to ensure greater agility and legal certainty. This regulation introduced key changes, such as raising the required deposits and the use of a sealed-bid system, affecting both procedural timelines and the award thresholds in recent enforcement proceedings.

Legal requirements to participate from abroad

To access the official BOE portal from outside Spain, it is essential to have a foreigner identity number (NIE) and a recognized digital certificate. International investors usually use the Cl@ve system to authenticate, ensuring that their digital profile is correctly linked to their identification data before the Spanish administration.

If participation is carried out through a third party or via a company, it is mandatory to present a power of attorney authorizing the representative. This document must be executed under international legalization standards, such as the Hague Apostille, thus guaranteeing full validity of the mandate in subsequent registration and award procedures. In summary, you need: a valid and up-to-date NIE; an electronic certificate or access to the Cl@ve system; prior registration on the BOE auction portal; and an apostilled power of attorney if there is representation.

Locating properties and essential due diligence

Property searches on the Costa del Sol are centralized on the BOE's official search engine, applying filters by province, municipality and type of asset. Various property management platforms offer alerts on seized assets in Málaga, facilitating monitoring of new publications and avoiding missed opportunities in high-demand areas.

Verification of registry encumbrances and debts

Before bidding on any property, it is crucial to obtain an updated nota simple from the Property Registry. This document details whether there are prior mortgages, concurrent seizures or usufruct rights that could survive the award, avoiding financial surprises that affect the investment's profitability.

Bidding mechanics and award timelines

The new sealed-bid system means that the offered amount remains hidden until the deadline closes, preventing other interested parties from knowing your proposal. After closing, the award thresholds define the success of the process: reaching 70% of the valuation secures direct award, while lower offers trigger specific judicial review processes.

Real costs and hidden risks when buying a property at a public auction

The total budget must include expenses that go beyond the auction price, including mandatory taxes and registration fees. For an international investor, it is vital to calculate the initial outlay for the deposit, which currently stands at 20% of the valuation for procedures initiated under the current regulation, being 5% in earlier cases.

The main cost items are: the legal deposit, between 5% and 20% of the valuation; the Transfer Tax, between 6% and 10% of the auction price; and registry and notary fees, between 1,000 € and 2,000 €.

Additionally, the deadline to pay the difference after being awarded has been reduced to twenty business days. Efficient financial management, advised by professionals specialized in the national real estate sector, avoids the risk of losing the originally deposited amount due to lack of immediate liquidity.

Managing occupants and possession timelines

One of the greatest uncertainties after winning a lot is the physical situation of the property and the possible presence of occupants. If the property is not vacant, the judicial eviction process can be significantly extended, requiring expert legal assistance to execute the eviction within the timeframes set by law.

Investing in real estate through auction requires rigorous analysis and solid financial preparation to avoid unforeseen complications. By following the proper legal protocols and having professional advice, it is possible to access unique opportunities with significant discounts on the Costa del Sol, always ensuring the legal viability of the operation before making any deposit.

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