Rustic land in Spain, municipality by municipality › Soria
Oncala
Soria · Castilla y León · 40 km²
What rustic land in Oncala allows and holds, for the municipality as a whole. For a particular plot, open it in the map: the report answers for that exact point.
Can you build a house on rustic land?
Castilla y León allows a new house on rustic land only when a farm needs it. Otherwise it has to go in a village, or restore a building.
Ley 5/1999, art. 23.1.e. A town plan can be stricter.
No town plan: the region's general rules apply. The region's planning viewer ↗
The SIU does not map land classes here: the town plan is the source.
Only the town hall can confirm it, in writing: ask for a certificado urbanístico.
Is there water?
No well or borehole is recorded in Oncala. That is not proof there is no water: ask local drillers.
Ground: 75% karstic or fissured aquifer, medium productivity; 22% low permeability, local groundwater only.
Choosing where to drill takes a hydrogeologist.
What to watch for
- One fire since 2016 reached the municipality: 36 ha, in 2026.
- No mapped flood zone (only studied rivers are mapped).
- 41% of the municipality is Natura 2000: new works need the region's consent.
- Radon zone I: new and restored homes need radon protection by law.
Living here
- 4G reaches 100% of homes; fibre 0%. Averages for the municipality.
- Rain: 523 mm a year (1971–2000), about 476 by 2041–2070.
- Summer highs: 23.7 °C, about 27.5 °C by 2041–2070.
- Frost days: 110 a year, about 76 by 2041–2070.
Around it
Castilfrío de la Sierra · Valtajeros · Estepa de San Juan · San Pedro Manrique · Arévalo de la Sierra · Las Aldehuelas · Villar del Río
From IGME, MITECO, SNCZI, EFFIS, the SIU, the Building Code, NCSE-02, SETID and AdapteCCa; summarised 9 October 2026. Information, not a certificate: the town hall has the final word.