The Key Concepts When Buying and Selling a Property in Spain

Buying or selling a property in Spain is not a standard transaction. The legal system, tax structure, and purchase process differ significantly from what many international buyers are accustomed to. Understanding the key concepts helps prevent surprises and allows you to negotiate from a position of knowledge.

Below is an overview of the terms that truly matter.

1. Identification & Ownership

NIE Number (Número de Identidad de Extranjero)
Every foreign buyer needs an NIE number. Without it, you cannot purchase a property, obtain a mortgage, or register utilities in your name. Think of it as your fiscal identification number in Spain.

Registro de la Propiedad
The official Property Registry. It confirms:

Who the legal owner is
Whether there are mortgages or liens on the property
Any restrictions or easements

This registry determines the legal reality of ownership.

Nota Simple
An extract from the Property Registry. This document forms the foundation of any legal due diligence. Without a recent Nota Simple, there is no secure transaction.

Catastro
The fiscal land registry. It records surface areas, plot details, and reference numbers for tax purposes. Important: the data in the Catastro and the Property Registry do not always perfectly match.

2. The Purchase Process Step by Step

Contrato de Arras
The reservation or deposit agreement. Typically, the buyer pays 10% of the purchase price.

There are different types, but in practice, arras penitenciales are most common. This means:

If the buyer withdraws → the deposit is forfeited
If the seller withdraws → the seller must return double the deposit

The Arras agreement therefore defines the risk profile for both parties.

Escritura Pública
The official deed signed before a notary. This is where the legal transfer of ownership takes place.

Important to understand: a Spanish notary verifies the formal legality of the transaction but does not conduct full legal due diligence as is customary in some other countries.

Entrega de llaves
The handover of keys, usually immediately after signing at the notary’s office.

3. Purchase Taxes

ITP (Impuesto de Transmisiones Patrimoniales)
Transfer tax for resale properties.
In the Valencia region, this is generally 10%.

IVA (VAT) and AJD
For new-build properties, you pay:

10% VAT (IVA)
Approximately 1.5% AJD (stamp duty, depending on the region)

New-build purchases therefore have a different tax structure than resale properties.

4. Taxes on Sale

Plusvalía Municipal
A municipal tax on the increase in the value of the land.
Usually paid by the seller.

Capital Gains Tax (Plusvalía Estatal)
Tax on the capital gain achieved upon sale.

For non-residents:

19% tax on the net gain
The buyer withholds 3% of the purchase price as an advance payment

This 3% is paid directly to the Spanish tax authorities.

5. Technical and Administrative Documents

Cédula de Habitabilidad
Certificate confirming the property is legally habitable.

Energy Performance Certificate (Certificado Energético)
Mandatory when selling a property.

Comunidad de Propietarios
Homeowners’ Association for apartments or properties within urbanisations.
Always verify:

Outstanding community fees
Reserve funds
Ongoing legal proceedings

6. Mortgage Terminology

Tasación
Official valuation carried out on behalf of the bank.

Loan to Value (LTV)
Financing percentage:

Residents: often up to 80%
Non-residents: typically 60–70%

Common Misconceptions

“The notary automatically protects my interests.” → Not entirely.
“Verbal agreements are binding.” → Only written agreements count.
“If it appears in the cadastre, it must be correct.” → Independent verification remains essential.

Conclusion

Buying or selling property in Spain is not complicated, but it does require understanding the correct terminology and the proper sequence of steps.

Anyone who understands what an Arras agreement entails, how the 3% withholding rule works, and why a Nota Simple is essential will be legally and financially better positioned.

Transparency, preparation, and professional guidance make the difference between a smooth transfer and an expensive mistake.