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About · Source standard

Our source standard

How GreekProps decides what counts as a source, how we show it, and how we keep law, announcements and market data apart.

Four tiers of sources

Tier 1

Official sources

What it includes: Laws and the Government Gazette, ministries and gov.gr portals, the Independent Authority for Public Revenue (AADE), the Bank of Greece, ELSTAT, the Hellenic Cadastre, municipalities, and EU bodies such as the ECB and the European Commission.

How we use it: The base of every rule, tax rate and official statistic we publish. We link to the official page or the text of the law, and name the law and article.

Tier 2

Professional summaries

What it includes: Tax and legal summaries published by the Big Four accounting firms, law firms and professional chambers, such as the Technical Chamber of Greece.

How we use it: Used to explain how a law works in practice, or where the official text is hard to reach. Linked and named. Where they differ from the law, the law wins.

Tier 3

Market data producers

What it includes: Property portals that publish price indices, such as Spitogatos and xe.gr, and data companies such as Hosthub for short-term rentals.

How we use it: Used for asking prices, rents and occupancy. Always named, with the period the figure covers. We say clearly that asking prices are not sale prices.

Tier 4

News reports

What it includes: Greek and international media.

How we use it: Used to spot developments early. We do not cite news reports as sources. We confirm each fact with the official body behind it, and where a measure is only announced, we say so.

What we never use

We do not use material from estate agencies, brokers or property management companies, and we do not name them as sources. Their figures and opinions can reflect their own listings and commercial interest. GreekProps stays independent of the agencies whose market it covers.

Rules we apply to every article and page

  • Law, draft or announcement. We say whether a rule is in force, in a draft bill, only announced, or expired. An announcement is never written as if it were law. The live status of each rule is in our regulation tracker.
  • Every number has a source and a period. A price, rate or statistic is shown with who produced it and the date or quarter it covers.
  • Asking, transaction and official values are kept apart. Portal asking prices, Bank of Greece transaction-based indices and Ministry of Finance zone prices measure different things. We label which one we use.
  • Where sources differ, we say so. If two official sources, or a law and a summary, disagree, we report both and which one we follow.
  • No estimates presented as data. If no reliable figure exists for an area or period, we say “not published” rather than fill the gap.
  • Last verified dates. Reference pages, such as the Golden Visa hub and the glossary, show the date their facts were last checked.
  • Explanation, not advice. We explain rules and data. We do not give legal, tax or investment advice, and we suggest checking any decision with a Greek lawyer or accountant.
  • Corrections. When we get something wrong we correct it and say so. Read our corrections policy or tell us about an error.
Read more in our editorial policy and about GreekProps.