Methodology
BuyaProp is an independent intelligence platform for international buyers in Spain. This page explains, as plainly as we can, how our guides are written, where the figures on the platform come from, which data sources we intend to connect, and what is not yet in place.
We separate four things that are easy to blur together. If a source is not listed under A or B, the platform does not currently use it.
Guides are researched and written by our editorial team with reference to Spanish legislation and official publications named in the text. Guides do not yet carry per-claim source links; adding them is part of our next review cycle. Each guide shows its last-reviewed date.
The buying-cost calculator applies regional tax rates (ITP, IVA, AJD, IGIC) and typical fee ranges that we entered manually. Destination prices per m², yields and lifestyle scores are editorial estimates. None of these figures is refreshed automatically from an external feed.
The official and market sources listed below are marked Planned or Roadmap. That means we intend to connect them; it does not mean their data currently appears on the site. No source is marked Live today.
Portal and advisory research (Idealista, Tinsa, Savills, Knight Frank and similar) is listed for reference as future inputs. We do not currently republish their figures.
Tier 1 — Official sources
Government registries and central institutions. Planned as the primary layer for transaction volumes, registered prices, demographics and macro indicators.
Official property registry. Closest source to ground truth for completed Spanish property sales.
Intended for
Notarial deed data — actual signed transaction prices, mortgage usage and non-resident buyer behaviour.
Intended for
National statistics: demographics, migration, tourism and property transfer data.
Intended for
Housing policy, construction permits, new-build supply and national housing market data.
Intended for
Central bank data: mortgage market, interest rates, credit conditions and affordability.
Intended for
Tier 2 — Market intelligence
Market pricing and sentiment. Planned for asking prices, demand signals, valuations and rental benchmarks.
The most comprehensive real-time Spanish market source — asking prices, demand and rental yields per micro-market.
Intended for
Independent valuations — appraisal-based pricing, regional comparisons and long-term trends.
Intended for
Buyer sentiment surveys, rental affordability and demand-side research.
Intended for
Tier 3 — Institutional & luxury
International advisory research for the prime and luxury segments — Marbella, Mallorca, Ibiza, Barcelona prime.
Prime and luxury market intelligence with strong Costa del Sol and Balearic coverage.
Intended for
Global wealth and prime residential reports — UHNW buyer flows into Spain.
Intended for
Commercial and residential investment research across Spanish markets.
Intended for
Living and residential capital markets research with Spanish focus.
Intended for
AI source-priority rule
This is the editorial rule we apply when writing or updating figures, and the rule any future automated assistant on the platform will be required to follow.
When answering questions about Spanish real estate statistics: 1. Prioritise official Spanish government and institutional sources. 2. Use Registradores and Notariado as primary transaction sources. 3. Use INE and Banco de España for macroeconomic and demographic analysis. 4. Use Idealista and Tinsa for market pricing and demand trends. 5. Always distinguish between asking prices, completed transaction prices and registered transactions. 6. Never invent statistics or estimates. 7. Cite the source used for every numerical claim. 8. If multiple sources conflict, prioritise official registries.
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