Inland Sanctuaries: Modern Fincas of Casares

The Inland Turn

Twelve kilometres from the coast, the village of Casares marks a climatic threshold. Summer temperatures exceed 38°C, winter nights drop below 4°C, and the diurnal swing can reach 20 degrees. Yet a new generation of finca renovations is proving that passive strategies — centuries old in their logic — can outperform mechanical systems in this environment.

Rammed Earth Revival

Three projects surveyed this quarter share a common material: rammed earth walls of 600mm, rebuilt from the original substrate where possible, supplemented with crushed limestone from the Sierra Bermeja quarries. The technique, once dismissed as peasant construction, now produces walls with a compressive strength of 2.1 MPa and a thermal lag of 10-12 hours.

You can feel the building breathe at dusk. The walls release the day's heat just as the air begins to cool.

Performance Data

Across the three audited properties, indoor temperatures never exceeded 27°C during the hottest week of August 2026, with zero mechanical cooling. Humidity remained stable between 45-60%.