§ 1How the chapters work
The chapters follow the order in which a purchase unfolds: whether you can and should buy, then money and taxes, then the checks, the contract and life as an owner. Each section answers one question well instead of touching ten questions lightly.
Every page opens with a short answer and says who the answer applies to. Spanish terms are explained beside the text, in the words a notary or a bank will use. Rates, thresholds and dates come from the official source that sets them, and each page lists that source with the date it was last checked.
§ 2What you can rely on
Nothing here is paid for by an agent, a developer, a lender or a lawyer. Numbers that cannot be traced to an official source are not printed. Worked examples are labelled as illustrative and show their assumptions.
Rules in Spain change, and some of them differ by region. Pages that track a rule in motion carry a dated "What changed" log, and every correction is logged with its date.