Santa María de Cayón

Can you build a house on rustic land?

Cantabria allows a new house on rustic land only within 200 m of a village, on at least 1,500 m².

Ley 5/2022, art. 51. A town plan can be stricter.

Plan in force: Normas Subsidiarias (an older, simpler plan), from 1987. 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?

No well or borehole is recorded in Santa María de Cayón. That is not proof there is no water: ask local drillers. 9 springs are recorded.

Ground: 71% low permeability, local groundwater only; 20% porous aquifer, high productivity; 6.3% karstic or fissured aquifer, high productivity.

Choosing where to drill takes a hydrogeologist.

What to watch for

• 29 fires since 2016 reached the municipality: 1,437 ha in all, the latest in 2026.
• 7.5% of the municipality lies in the 100-year flood zone; 10% in the 500-year one.
• 1.9% of the municipality is preferential flow zone, where new building is generally banned.
• 1.9% of the municipality is Natura 2000: new works need the region's consent.
• Not a radon zone.

Living here

• 4G reaches 100% of homes; fibre 97%. Averages for the municipality.
• Rain: 1,293 mm a year (1971–2000), about 1,086 by 2041–2070.
• Summer highs: 23.3 °C, about 25.4 °C by 2041–2070.
• Frost days: 9 a year, about 2 by 2041–2070.

Around it

Castañeda · Villafufre · Penagos · Villaescusa · Saro · Santiurde de Toranzo · Liérganes · Miera