Poland's electronic land register — the authoritative legal record of property ownership, mortgages, and encumbrances. Every property has a unique KW number. Title transfer takes legal effect only upon registration.
The Księga Wieczysta (KW) is Poland's land and mortgage register, maintained by district courts (sądy rejonowe) through the Central Land Register Information System (Centralna Informacja Ksiąg Wieczystych). Every property in Poland is assigned a unique KW number (format: district code/sequence/check digit, e.g. WR1K/00123456/4). The register is publicly accessible online at ekw.ms.gov.pl and provides a legally binding record of the property's ownership, legal status, area, and encumbrances.
The Księga Wieczysta is divided into four sections. Section I records the property's physical description (location, area, intended use). Section II records current and historical ownership. Section III records rights, claims, and encumbrances other than mortgages (e.g. easements, lifetime rights of use, enforcement proceedings). Section IV records mortgages (hipoteki), including the amount, currency, creditor, and ranking.
Before purchasing any Polish property, your lawyer must conduct a thorough KW search. This verifies: that the seller is the registered owner; that there are no third-party claims, pending proceedings, or enforcement measures in Section III; and that no mortgages remain registered in Section IV that will not be discharged before completion. A clean KW extract (odpis z Księgi Wieczystej) is one of the most important due diligence documents in any Polish property transaction.
Title transfer in Poland takes legal effect against third parties only upon registration in the Księga Wieczysta — not upon the signing of the notarial deed. This means there is a gap between signing and registration (typically 1–4 weeks for the court to process the application filed by the notary) during which the buyer owns the property legally but the register still shows the seller. This gap is why your lawyer should check for any new entries immediately before the deed is signed.
The Księga Wieczysta system went fully electronic in 2014. You can search KW records by the KW number free of charge at ekw.ms.gov.pl. Certified extracts (odpisy) can be ordered from the court for a small fee. For properties without an established KW (common with older rural land or recently subdivided plots), establishing a new KW is required as part of the purchase process and takes additional time.
The KW number should be stated in the property listing, the preliminary contract, or any existing title documents. If you don't have it, ask the seller for a copy of their title deed or most recent KW extract. The seller's notary will also have it. Once you have the number, you can search the register free at ekw.ms.gov.pl.
Section III records third-party rights, claims, and encumbrances other than mortgages: perpetual usufruct (użytkowanie wieczyste), lifetime rights of use (dożywocie), easements (służebności), court enforcement proceedings (postępowania egzekucyjne), and pre-emption rights. Any entry in Section III requires careful examination by your lawyer before completing the purchase.
After the notary files the registration application, the district court typically processes it within 1–4 weeks, though delays of 6–8 weeks occur at busier courts. The ownership is legally valid as between the parties from the date of the notarial deed; registration finalises the legal effect against third parties.
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