We started on the front line.
During the financial crisis, we helped families protect their rights.
When Brexit arrived, we guided UK nationals through residency and legal transition in Spain.
Today, we are a law firm focused on immigration, property and cross-border legal matters for foreigners, expats and international families settling in Spain.
We handle complex visas, permits, property transactions and estate planning with a simple principle:
clarity, fixed fees, reliable timelines and transparent communication.
No surprises. Clients always know where they stand.
Our Services

Immigration & Visas
Visas and residency permits for non-EU nationals and UK citizens.

Private Client & Family Planning
Cross-border inheritance, wills and estate planning under Spanish law.

Property
Property purchases and conveyancing for foreign buyers.

Business
Company formation, corporate structuring and ongoing legal support for businesses in Spain.

Taxation
Spanish taxation, residency planning and cross-border tax advice.
Clear legal advice. Fixed fees. No surprises.
What our clients say
620 cases won
We have won more than 620 cases against off-plan property developer’s banks & insurers since 2012.
over €31M refunded
You could be entitled to a refund too. Contact us today for a free, no-obligation appraisal of your case.
About CostaLuz Lawyers
Founded in 2006, the Costaluz Lawyers team is made up of highly experienced legal experts whose maxim is to provide premium customer service and ensure that all clients receive the best possible outcome to their case. Call us today on +34 919 499 342 to discuss your case with a Spanish lawyer.

María Luisa de Castro
CEO and founder
María qualified as a lawyer in 1998, is registered with the Cádiz Bar Association (ICA Cádiz, Bar Nº 2745), and founded Costaluz Lawyers in 2006. Since then, she has made it her mission to help foreigners understand Spanish law and to achieve better consumer protection. Maria, more recently has focused on Spanish property and immigration law.
To Email Maria Directly:
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View our large library of information on our Resources page
Most used visa hub (2026): Non-Lucrative Visa Spain (2026) — Requirements, timeline & checklists.
Independent Spanish law firm coordinating residency, tax, property and estate planning for Americans retiring in Spain, alongside your US advisers.
View moreMedicare does not cover you in Spain and the public buy-in needs a year of prior residence. What Americans must solve before year one.
View moreHow Spain taxes US 401(k), traditional IRA and Roth IRA distributions once you are tax resident – treaty, saving clause and the timing that decides it.
View moreNew-build in Rota? Free-market, protected (VPPL) and cooperative homes carry different rules. What an independent lawyer checks before you pay.
View moreDisclaimer: This information is provided for general guidance purposes only and does not constitute personalised tax or legal advice. Each case must be assessed individually according to the client’s specific circumstances. It is essential to consult a qualified specialist before taking any action or making any decision.
Legal Notice: The content on this page is provided for general informational and educational purposes only. It does not constitute legal advice and should not be relied upon as such. No action should be taken based solely on this content without first seeking independent professional legal counsel. Each case requires individual assessment based on its specific circumstances. CostaLuz Lawyers accepts no liability for actions taken or not taken based on this content.
Key Guides for Foreign Property Buyers
- Buying Property in Spain 2026: The Complete Legal Guide — 7-step process from NIE to registry inscription
- CostaLuz Lawyers Service Overview — property, tax, immigration and inheritance for expats
- QuickLease: Rental Compliance Pre-Purchase Check — the 4-level legal check before buy-to-let purchase, 1.000€ + IVA
- NIE Number Spain 2026: Complete Guide for Foreign Buyers — what it is, why you need one, and how to get it as a foreigner
- Spanish Inheritance Process: Step-by-Step Guide for Foreign Heirs — the full probate process for foreign heirs, from death certificate to registry
- Buying Property in Spain: A Legal Guide for UK Buyers (2026) — how Spanish property law differs from UK conveyancing, explained by our lawyers
- Buying Property in Spain: A Legal Guide for Latin American Buyers (2026) — key legal differences for Latin American buyers purchasing in Spain
- The Seller Wants to Pull Out After You Paid the Deposit: Your Position in Spain — what to do if it happens to you
