Acquiring Polish Property by Adverse Possession (Zasiedzenie): How It Works

This guide is general legal information, not legal advice. How the rules apply depends on your individual circumstances, and the matter should be assessed by a qualified Polish lawyer. Twoja Sprawa helps you organise the documents for that assessment.

Picture this scenario: for 20-plus years you have actually occupied a property — living there, paying the bills, carrying out repairs — but you have never been the owner on paper. Polish law allows title to be acquired through adverse possession (zasiedzenie). It is a process that lets you become the legal owner of a property without a purchase deed, purely through long, uninterrupted, factual possession. This article explains how adverse possession works, what conditions must be met, the court procedure — and what it means for the person who ends up losing their property.

What is adverse possession (Article 172 of the Civil Code)

Article 172 of the Polish Civil Code (Kodeks cywilny) defines adverse possession as the acquisition of ownership as a result of: 1. Self-owner possession (posiadanie samoistne — physically holding and using the property as if you were its owner), 2. The passage of time — 20 years (good faith) or 30 years (bad faith), 3. No objection from the owner throughout that period.

The provision reads (official Polish text, our translation):

"A person who has possessed another's thing openly, continuously and as an owner acquires ownership of it if the possession has lasted twenty years, and if the possession was not in good faith — if it has lasted thirty years."

The four conditions for adverse possession

To acquire a property by adverse possession, you must satisfy four conditions.

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1. Possession of the property (not merely temporary)

You must actually possess the property — live in it, use it, carry out repairs, pay the associated charges. This cannot be sporadic (a single year's stay, for instance, is not enough).

2. Possession "as an owner"

You must possess the property without the consent of its real owner. In practice this means: - You are not a tenant (renting is possession under someone else's instruction, not self-owner possession), - You do not have oral or written permission from the owner (that would amount to a loan-for-use arrangement, użyczenie).

In substance, you must behave as the owner would — paying the outgoings, carrying out repairs, never asking anyone's permission.

3. "Open" possession

Possession must be public — visible to your neighbours and to the real owner. You cannot conceal it, keep tenants secretly, or occupy the property covertly. It has to take place in plain view.

4. The passage of time

Good faith vs bad faith: if you bought the property in good faith (believing the seller was the true owner), the 20-year period applies. If you knew all along that the property belonged to someone else, the 30-year period applies.

Procedure — how to acquire ownership by adverse possession

Adverse possession does not happen automatically. You must bring a claim against the real owner (or their legal successor) and ask the court to declare that adverse possession has occurred.

Step 1: Gather your evidence

Before filing, collect evidence of possession: - Proof of registered residence (zameldowanie) — showing you lived there for 20-plus years, - Utility bills (electricity, water, gas) — in your name, - Property tax records — showing payments made by you, - Repair and renovation invoices — in your name, - Witnesses — neighbours who can confirm your long occupation, - Municipal records — confirming your presence in the local residents' register.

Step 2: Identify the real owner

Check the księga wieczysta (the land and mortgage register — Poland's official public register of property ownership and encumbrances) to find out who is the registered owner. That person will be the defendant in the case.

Complication: if the owner has died, you must bring the claim against their heirs. If the heirs are unknown, the case becomes considerably more complex.

Step 3: File a court claim

You file an application with the district court (sąd rejonowy) having jurisdiction over the location of the property, seeking: - A declaration of adverse possession (i.e. a finding that you have acquired ownership), - An entry in the land and mortgage register in your name.

The application should include: - A description of the property (address, plot number), - The period of possession (from year X to year Y = 20-plus years), - Documents evidencing your possession.

Step 4: Court hearings

The court will examine whether you have met all the conditions for adverse possession. It may: - Hear witnesses (neighbours), - Order a court inspection — a court-appointed expert (rzeczoznawca) may check whether you genuinely possessed the property, - Request further evidence.

Step 5: Judgment and registration

If the court finds that adverse possession has occurred, it issues an order (postanowienie), which forms the basis for registering you as owner in the land and mortgage register (the land registry office then makes the entry).

Effect of adverse possession: you become the owner from the date the court order is issued — even though that order may be issued long after the qualifying period actually ran, and may carry a backdated effective date. ⚠️ This point is worded loosely in the source material; ask your lawyer to confirm the exact date from which title is treated as having passed.

Tax on adverse possession — what do you have to pay?

Once you have acquired a property by adverse possession, several costs may apply.

1. Civil law transactions tax (PCC)

Adverse possession is generally treated as exempt from PCC, because it is not a "civil law transaction" in the traditional sense (there is no contract and no counterparty). That said, you should confirm the position with the court clerk handling your case.

2. Court fee

An application for a declaration of adverse possession requires a court fee (roughly PLN 100–300, depending on the value of the property).

3. Property tax

From the date the court order is issued, you must pay property tax as the owner (if you were not already doing so).

4. Legal costs

If you instruct a lawyer, you will also need to budget for their fees.

What happens to the previous owner — who loses out?

This is a serious consequence of the doctrine. If the court declares adverse possession, the real owner loses the property. In most cases there is no compensation and no right of return.

How a previous owner can defend their position

The previous owner may: 1. Sue for recovery (within 3 years of discovering the adverse possession) — but only if they genuinely found out about it recently, 2. Apply to reopen proceedings (wznowienie) — if they believe the court made an error, 3. Appeal — if they disagree with the first-instance judgment.

However, if the possession genuinely lasted the full 20–30 years, openly and without objection, the previous owner's chances of success are minimal.

⚠️ Note: adverse possession is a drastic mechanism — someone loses their property as a result. Owners should stay alert and check on their land at least once every ten years to make sure no one else has moved in.

Handling this from the UK

If you have been in possession of a property in Poland while living in the UK, you can still pursue a claim:

  1. Power of attorney — sign a power of attorney appointing a Polish lawyer to act for you,
  2. Correspondence — the lawyer gathers evidence and prepares the application,
  3. Hearings — you can usually attend remotely (by video link),
  4. Ownership — once the case is won, the land and mortgage register is updated.

Frequently asked questions

Do I have to have paid the property tax to succeed in a claim? No — but if you paid the tax in your own name, that is strong evidence of possession. If you did not, you will need to explain why (for example, the previous owner kept paying the tax while you were the one in factual possession).

What happens to someone who loses their property through adverse possession? There is no automatic compensation. The law treats it as their own oversight for not checking on the property for 20-plus years. They can only sue you if they discovered the adverse possession recently — and even then, they must bring the claim for recovery within 3 years of that discovery.

Does adverse possession apply to tenants? No. A tenant does not acquire the property this way. Renting is possession carried out on the owner's instruction, whereas adverse possession requires possession that is independent of the owner.

How long do adverse possession court proceedings take? Typically 1–2 years at first instance. Add roughly another year if the case goes to appeal.

Does adverse possession apply to agricultural land? Yes — adverse possession applies to all types of real property (agricultural land, houses, building plots). However, if the land is agricultural, the National Support Centre for Agriculture (KOWR) may have a statutory pre-emption right in relation to the new owner.

Free review of your case

Have you occupied a property in Poland for 20-plus years without a formal title document? Want to know whether you may be able to claim adverse possession? Get in touch with Twoja Sprawa at twojasprawa.com. We will review your situation free of charge.

Disclaimer

Twoja Sprawa (twojasprawa.com) is a referral platform — not a law firm. This article is for general information only. Adverse possession claims are legally complex, and every case needs individual assessment. We do not guarantee any outcome in an adverse possession claim.

Sources

Sources last verified: 27 June 2026.

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