We manage the legalization of unregistered buildings and the official change of property use in accordance with the Spanish Land Law (Ley del Suelo) and local urban planning regulations. We process urban legality certificates (certificado de legalidad urbanística), coordinate with architects and municipalities, and update the Land Registry and Cadastre records.
Legalization of buildings and change of use of premises in Spain
Building or renovating real estate without the right permits can lead to serious legal and financial consequences. In big cities like Barcelona, where urban planning rules are super strict, legalizing buildings and changing the use of spaces are important steps to make sure real estate is used legally. Our company specializes in preparing documents for the legalization of unauthorized buildings and changes in the intended use of real estate, guided by the provisions of the Ley del Suelo, Spanish technical building standards, and local regulations.
What is the legalization of buildings and why is it necessary?
The legalization of buildings is the legal registration of unauthorized or rebuilt premises in accordance with current legislation. It gives the owner the right to:
- avoid fines from the municipality;
- obtain a certificate of conformity (certificado de legalidad urbanística);
- enter the property in the real estate register and cadastre;
- sell, rent, or re-register the property without risk;
- connect to utilities (electricity, water, gas);
- register a change in the purpose of the premises — for example, from commercial to residential or vice versa.
Change of intended use of premises
- A change of intended use of real estate involves adapting the premises to a new functional use. This may include:
- converting a basement or attic into living space;
- adapting living space for commercial use (office, studio, shop);
- reconstruction of industrial facilities into apartments or business centers;
- merging or dividing apartments with a change in functional purpose.
How we work
We take care of the entire process — from the initial analysis of the property to obtaining all the necessary permits:
- Legal audit of the property. Verification of documents, compliance with legislation, urban planning restrictions, and risks.
- Preparation of technical documentation. Engagement of architects and engineers to create plans, designs, and technical reports in accordance with local government requirements.
- Issuance of certificates and approval by the municipality. We submit all documents to the relevant urban planning department (Urbanismo) and accompany the process until a positive decision is made.
- Making changes to the Real Estate Registry (Registro de la Propiedad) and Cadastre (Catastro). After obtaining permission, we update the property data to avoid future legal complications.
Why choose us
- Knowledge of local legislation — we work in accordance with Spanish laws, in particular Ley del Suelo, Código Técnico de la Edificación (CTE) and Barcelona city regulations.
- Our own specialists — our team includes architects, lawyers, and technical specialists with experience working specifically in the Catalan region.
- Comprehensive approach — we take care of all the bureaucracy and ensure the legal compliance of each stage.
- Individual solutions — we approach each case individually, taking into account your goals: sale, renovation, rental, change of activity.
When to contact us
- You own a property that was built or renovated without a permit.
- You plan to change the purpose of the property (for example, to convert commercial premises into apartments).
- You want to sell or rent out the property, but the documents do not correspond to the actual state of affairs.
- You have a property that is at risk of fines or forced demolition.
Legalization of buildings and change of use in Barcelona — safe, legal, professional
Don’t put off sorting out the legal status of your property. Contact us — we will ensure legality, compliance with building regulations, and peace of mind for the future of your property.
