Cangas de Onís

Can you build a house on rustic land?

Asturias allows a new house on rustic land only where the town plan provides for it.

DL 1/2004, art. 124. A town plan can be stricter.

Plan in force: Plan General (a full town plan), from 2004. 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 2 wells and boreholes in Cangas de Onís. Half of the 2 with a depth found water at 100–110 m. One measured yield: 2 L/s. 82 springs are recorded.

Ground: 35% karstic or fissured aquifer, medium productivity; 27% practically impermeable; 25% karstic or fissured aquifer, high productivity; 9.8% low permeability, local groundwater only.

Choosing where to drill takes a hydrogeologist.

What to watch for

• 128 fires since 2016 reached the municipality: 4,481 ha in all, the latest in 2026.
• 0.7% of the municipality lies in the 100-year flood zone; 1.4% in the 500-year one.
• 0.7% of the municipality is preferential flow zone, where new building is generally banned.
• 34% of the municipality is Natura 2000: new works need the region's consent.
• 33% of the municipality is a protected natural area, whose plan limits what can be done.
• Not a radon zone.

Living here

• 4G reaches 99% of homes; fibre 85%. Averages for the municipality.
• Rain: 1,311 mm a year (1971–2000), about 1,110 by 2041–2070.
• Summer highs: 21.6 °C, about 23.6 °C by 2041–2070.
• Frost days: 23 a year, about 10 by 2041–2070.

Around it

Onís · Amieva · Parres · Ribadesella · Llanes · Posada de Valdeón