Is your construction company planning to enter the Spanish market? REA registration in Spain is mandatory for construction companies that want to work legally in the Spanish market. Whether you work as a general contractor or as a specialised subcontractor (installations, electrical work, finishing works), you must meet one of the most important formal requirements: obtaining registration in the REA, the Register of Accredited Companies (Registro de Empresas Acreditadas – REA).

As specialists in the internationalisation of construction companies, we know from experience that the absence of this certificate may:

-block the start of works on site,
-lead to financial penalties,
-and even prevent participation in public tenders and contracts in Spain.

Since most of the questions we receive from foreign companies tend to repeat themselves, and our team has been helping companies obtain REA registration in Spain for years, we have prepared this practical guide.

Here you will find 15 of the most frequently asked questions (FAQ 2026) that company owners and directors search for on Google when looking for information on how to obtain the REA certificate quickly and correctly.

This material will help you avoid formal mistakes, shorten the registration process and prepare your company to carry out projects in Spain fully legally.

Most frequently asked questions about REA registration in Spain (FAQ 2026)

1. How long does it take to obtain REA registration in Spain?

Usually, the procedure takes between 5 and 15 working days from the moment a complete application is submitted.

According to Spanish legislation, the labour authority has up to 15 working days to review the application. After approval, the company usually receives the registration notification within about 10 working days.

The entire process takes on average 2–3 weeks, depending on the autonomous community where the application is submitted.

Practical tip: Submit the application at least one month before the planned start of the project to avoid delays.

2. How long is the REA certificate valid?

REA registration is valid for 3 years from the date of registration.

After this period, the company must renew the registration to keep the certificate valid.

Practical tip: Use a company email address during registration to receive a renewal reminder about 6 months before expiry.

3. Is it possible to speed up REA registration?

There is no official fast-track procedure.

However, in practice, if the documentation is complete and correct, registration may be obtained in 5–7 working days.

Practical tip: The most effective way to accelerate the process is to ensure that all documents are complete and correct. Support from a local representative in Spain significantly reduces administrative delays.

4. Is it possible to apply for REA registration without a contract in Spain?

No. Registration is directly linked to the start of construction works in Spain. It is necessary to indicate a Spanish contractor and the construction site location.

Practical tip: One single registration covers all projects in Spain.

5. Where is REA registration obtained in Spain?

Registration is carried out with the labour authority of the autonomous community where the first construction project will begin.

Practical tip: If you are unsure which authority is competent, consult your Spanish client or a local representative.

6. Is registration in one autonomous community valid throughout Spain?

Yes. REA registration is valid across the entire Spanish territory.

Practical tip: Always keep the certificate in PDF format for future projects and inspections.

7. What is the cost of the REA certificate?

Each autonomous community may establish its own administrative fees.

Currently, REA registration is free in most regions. The exception is Catalonia, where the fee is 113.60 euros (data as of 10/11/2025).

Practical tip: Additional costs may arise from translation or legal representation.

8. How do you submit the REA registration application?

The application is submitted electronically via the labour authority platform or by a representative holding a Spanish electronic signature.

Practical tip: If you do not have an electronic signature, you can authorise a representative in Spain to submit the application.

9. Is it possible to submit the application in person?

No. The procedure is entirely digital and carried out online.

Practical tip: All documents should be prepared in clear and readable PDF format.

10. Can a foreign certificate replace the REA registration?

No. Spain requires registration in the local REA system.

Practical tip: Foreign certificates do not replace this mandatory registration.

11. Do I receive confirmation after registration?

Yes. After the process is completed, the company receives the official REA certificate in PDF format.

Practical tip: Always keep the document accessible on site.

12. Is it possible to verify the REA registration online?

Yes. The registration can be verified online using the company’s details.

Practical tip: The REA number can be included in commercial offers to increase credibility.

13. Who is required to obtain REA registration?

All companies performing construction work in Spain, including foreign subcontractors.

Practical tip: Even activities such as installations or cleaning may fall within the construction sector.

14. Does a self-employed worker need REA registration?

No, if they do not employ workers.

If at least one employee is hired, registration becomes mandatory.

Practical tip: Always verify your legal structure before starting activity.

15. What should be done after obtaining the REA certificate?

After registration, the company can legally start construction work in Spain.

However, it must also comply with other obligations, such as:

notification of posted workers,
occupational health and safety training,
salary adjustments according to regional collective agreements.

Practical tip: Before starting the project, request a documentation review from a safety coordinator in Spain.

Obtaining REA registration in Spain is a mandatory requirement for any construction company (including foreign companies) that intends to operate legally in the country. Although the procedure itself is not particularly complex, it requires knowledge of local regulations and administrative deadlines.

For this reason, support from a representative in Spain is recommended in order to avoid formal errors and speed up the registration process. Our company not only handles REA registration but also assists with worker posting procedures, document translation and compliance with occupational health and safety requirements.

For more information, visit the official REA register website.