And why having a property finder and a lawyer working together is crucial

Most people assume that if two flats look the same, in the same building, same layout… the paperwork must be identical.

In Madrid, that’s rarely true.

Recently, I reviewed two different apartments in the same building in Chamberí for a client. Both were spacious family flats — around 150–160 m², same layout, same floor plan, same building. To the eye, they were almost identical.

But the paperwork? Completely different stories.

1. Catastro vs Escritura differed by more than 15 m²

One apartment showed 162 m² in the Catastro but only 147 m² in the Escritura. The other showed the opposite. Two similar flats, two very different legal realities.

This is extremely common in Madrid, especially in larger properties that have gone through multiple renovations or ownership changes.

2. One had a major renovation that was never registered

A beautiful integrated kitchen + dining area… but no record of a building permit at the Ayuntamiento.

If the city inspects, the buyer becomes responsible — not the seller. Many foreign buyers don’t realise this until it’s too late.

3. Community rules were not the same

One unit had written permission for short‑term rentals from years ago. The other didn’t.

Same staircase, same neighbours, same building — completely different rights.

4. One apartment carried an old community debt

A previous owner hadn’t paid several months of community fees. That debt legally passes to the new buyer.

This is one of the most common (and most expensive) surprises for foreigners buying in Madrid.

Why the Property Finder + Lawyer Team Matters

This is exactly where the combination of a property finder and a specialised lawyer becomes essential.

What a property finder sees:

• inconsistencies in the listing
• unusual renovations
• missing documents
• red flags in the building or community
• details that don’t match the reality on paper

What a lawyer sees:

• legal risks
• debts and charges
• licences and permits
• compliance issues
• future liabilities

When we work together, we protect the client from both the visible and the invisible risks.

Buying a large apartment in Madrid is exciting. Buying without the right team is risky

Thinking about buying or renting in Madrid?

Write to me to schedule a consultation — your future home deserves the right team behind it.