San Martín de Montalbán

Can you build a house on rustic land?

Castilla-La Mancha requires at least 1.5 ha for a new house on rustic land.

Other cases: 3 ha on protected rustic land.

Orden 4/2020, art. 5. A town plan can be stricter.

Plan in force: Plan General (a full town plan), from 2008. 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 San Martín de Montalbán. Its depth: 90 m.

Ground: 70% practically impermeable; 27% porous aquifer, medium productivity.

Choosing where to drill takes a hydrogeologist.

What to watch for

• 2 fires since 2016 reached the municipality: 155 ha in all, the latest in 2025.
• No mapped flood zone (only studied rivers are mapped).
• 19% 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 99% of homes; fibre 87%. Averages for the municipality.
• Rain: 385 mm a year (1971–2000), about 361 by 2041–2070.
• Summer highs: 32 °C, about 36.2 °C by 2041–2070.
• Frost days: 37 a year, about 17 by 2041–2070.

Around it

Navahermosa · La Puebla de Montalbán · Villarejo de Montalbán · Menasalbas · El Carpio de Tajo