Terraly Data Methodology
Last updated: 26 Aug 2026 · Source: Terraly Real Estate Analytics Engine
1. Average Asking Price per Square Metre (€/m²)
Average price per m² is calculated directly from active, verified property listings within each geographic boundary. Our algorithm computes a trimmed mean to eliminate statistical outliers (such as extreme raw land plots or ultra-high bespoke compound estates).
Trimmed Mean Price/m² = Sum(Listing Price / Built Area) for middle 90% of verified listings2. Estimated Rental Yield (%)
Terraly explicitly labels all yield figures as Estimated Rental Yield. These figures represent the projected annualized gross rental income relative to the property acquisition price, modeled across seasonal tourism rates and long-term lease comparables.
Disclaimer: Estimated yields are informational benchmarks and do not constitute financial or investment guarantees.
3. Data Freshness & Feed Verification
All property inventory is ingested directly from partner brokerage feeds (Kyero XML, Idealista XML, CSV). Feeds are synchronized daily. Listings unrefreshed for more than 30 days are automatically archived to maintain portfolio accuracy.