Cadalso de los Vidrios

Can you build a house on rustic land?

The Madrid region allows no new houses on rustic land. Restoring an existing or listed building is the way.

Ley 9/2001, art. 29. A town plan can be stricter.

Plan in force: Normas Subsidiarias (an older, simpler plan), from 1985. The region's planning viewer ↗

The national urban information system (SIU) maps the land class for 100% of the municipality.

Only the town hall can confirm it, in writing: ask for a certificado urbanístico.

Is there water?

IGME records one well or borehole in Cadalso de los Vidrios. Its depth: 6 m.

Ground: 99% practically impermeable.

Choosing where to drill takes a hydrogeologist.

What to watch for

• 3 fires since 2016 reached the municipality: 23,104 ha in all, the latest in 2026.
• No mapped flood zone (only studied rivers are mapped).
• 80% of the municipality is Natura 2000: new works need the region's consent.
• Radon zone II: new and restored homes need radon protection by law.

Living here

• 4G reaches 100% of homes; fibre 83%. Averages for the municipality.
• Rain: 545 mm a year (1971–2000), about 509 by 2041–2070.
• Summer highs: 30.6 °C, about 34.7 °C by 2041–2070.
• Frost days: 32 a year, about 14 by 2041–2070.

Around it

Rozas de Puerto Real · Almorox · Navahondilla · San Martín de Valdeiglesias · Cenicientos