NRA: Spain's Mandatory Short-Term Rental Registration Number — Complete Guide 2026

If you own a property in Spain and rent it out — even occasionally — through platforms like Airbnb, Booking.com, or Vrbo, there is a regulatory change that you cannot afford to ignore. Since 1 July 2025, every short-term rental advertised on an online platform in Spain must display a valid NRA (*Número de Registro de Alquiler*), a unique registration number that functions as the property's official "ID card" for rental purposes.

Failure to obtain and display this number means your listing can — and will — be removed by the platform. More critically, it exposes you to administrative fines and potential tax investigations. At Bufete Padilla, we are already advising dozens of Costa Blanca property owners on compliance. This guide covers everything you need to know.

What Exactly Is the NRA?

The NRA (*Número de Registro de Alquiler*) is a unique alphanumeric code assigned to each property or room that is offered for short-term or medium-term rental through online booking platforms. Think of it as a "DNI for your rental property."

The number is linked to the property owner (or authorised representative) and to the specific property's cadastral and Land Registry data. Its purpose is threefold:

• Regulatory control — it allows the Administration to track the active stock of tourist and temporary rental properties across Spain
• Tax transparency — it connects rental activity directly to the Agencia Tributaria (Spanish Tax Agency), reducing the shadow economy
• Consumer protection — it gives guests a way to verify that the accommodation is legally registered and meets the applicable safety and habitability standards

When Did It Become Mandatory?

The NRA obligation came into force on 1 July 2025 for holiday and vacation rentals. In many Autonomous Communities, the requirement also extends to temporary rentals (*alquiler de temporada*) that are publicly advertised on online booking platforms.

Key enforcement mechanisms:

• The NRA must be visibly displayed in every online listing — on Airbnb, Booking.com, Vrbo, and any other platform
• Platforms are legally obligated to remove listings that do not include a valid NRA within the timeframes established by the regulations
• Repeat non-compliance can trigger administrative sanctions and referral to the tax authorities

Who Needs an NRA?

You need an NRA if you meet any of the following criteria: