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How to open a business in San Sebastian (2026)

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Cost

Free

Variable according to municipality and type of activity. The declaration of responsibility is free in many cases. A business license can cost between €150 and €2,000 depending on the municipality and activity.

Time at office

30-60 minutes (first appointment)

Estimated time

Declaration of responsibility: immediate opening. Full business license: 1-4 months.

Quick summary

Complete guide for opening a business in San Sebastian, Pais Vasco. Business license, declaration of responsibility, municipal procedures and legal requirements in 2026.

Required documents

  • DNI or NIE of the owner

    If a company, founding deed and CIF of the enterprise.

  • Tax registration (Modelo 036/037)

    You must be registered as self-employed or have your company established before opening.

  • Social security registration

    Register as a self-employed person in RETA or register employees if you hire staff.

  • Lease agreement or property deed of the location

    Documentation that proves your right to use the premises where the activity will take place.

  • ?

    Technical project (if required by the activity) Optional

    For activities with environmental, acoustic impact or requiring works, a project signed by a qualified professional (architect, engineer) is needed.

    ⚠️ Only for classified activities or with construction
  • ?

    Urban compatibility certificate Optional

    Confirms that the premises can be used for the activity you want to develop. Apply at San Sebastian City Hall before renting the location.

    ⚠️ Recommended before signing the lease agreement

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Variable according to municipality and type of activity. The declaration of responsibility is free in many cases. A business license can cost between €150 and €2,000 depending on the municipality and activity. €0.00
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: 2026

Step by step

  • 1

    Check urban compatibility of the premises

    Go to official site

    Before leasing or buying, check with San Sebastian City Hall whether the location allows the activity you want to develop. This step saves unnecessary delays and expenses.

    !

    Expert tip

    "Most city halls resolve an urban compatibility inquiry within 5-10 business days. Always request a written response."

  • 2

    Register with tax and social security authorities

    Go to official site

    If you are not yet self-employed, do it first. Use Modelo 037 at AEAT and register on Importass for RETA. This step is necessary to proceed with the opening process.

    !

    Expert tip

    "If you already have an SL or SA company, just need the CIF of the enterprise and social security registration for it."

  • 3

    Apply for declaration of responsibility or business license with San Sebastian City Hall

    Go to official site

    For many commercial and service activities, a simple declaration of responsibility for opening is enough before the San Sebastian City Hall. For more impactful activities (bars, workshops, industries) you need a full business license. In Euskadi, business opening procedures are handled at the corresponding city hall, and if needed, at the Diputación Foral. The SPRI portal centralizes information and forms. Each historical territory may have specific regulations.

    !

    Expert tip

    "Use the SPRI / Euskadi Enpresa portal to determine which procedure applies to your activity before visiting city hall."

  • 4

    Obtain any additional sector-specific authorizations

    Depending on the type of business, you may need additional permits: health (food, hospitality), environmental (workshops, industries), tourism (accommodations), or entertainment (venues with music).

    !

    Expert tip

    "Check the IPYME Ministry portal for a full list of required authorizations based on your CNAE activity code."

Offices and service points - San Sebastian

San Sebastian City Hall — Licensing and Business Activities Office

San Sebastian / Donostia

Monday to Friday: 08:30 - 14:00

Frequently asked questions

What is the difference between a business license and a declaration of responsibility?
A declaration of responsibility allows you to open immediately, assuming that all legal requirements are met. The municipality can verify it at a later time. A business license requires prior inspection by the municipality and can take months. For most commercial activities without special impact (offices, small shops) a declaration of responsibility is sufficient.
How much does the business license cost in San Sebastian?
The cost of the business license varies according to the San Sebastian City Hall and type of activity. For harmless activities (offices, small retail), the municipal fee usually ranges from €100 to €300. For classified activities (hostels, workshops) it can exceed €1,000 due to required technical reports.
Can I open a business from home in Spain?
Yes. Many service-based, consultancy or online sales activities can be conducted from your personal address. In that case, the 'location' is your residence and usually doesn't require a municipal license if there's no public presence. However, you must register with tax and social security authorities.
What happens if I open without a business license?
Opening a business without the appropriate license or declaration of responsibility can result in municipal fines ranging from hundreds to thousands of euros, as well as local closure. City halls have inspectors who conduct periodic checks on businesses.
Do I need to do any renovations to adapt the premises?
If the premises require renovation, you must apply for a works permit or prior notification of works with the city hall before starting work. Minor works (painting, light installations) can often be handled via prior notification. Major works require a technical project and a works license.

This procedure in other cities

Official sources and useful links

This guide is for informational purposes only. Always check the official source for current information.