A Silesian manufacturing company received a tax authority notice in late 2024 reclassifying its warehouse complex from a residential-adjacent structure to a commercial building. The reclassification doubled the applicable property tax rate overnight. The owner had 30 days to appeal – and nearly missed that window entirely.

Polish municipalities intensified property tax reclassification audits throughout 2025, targeting buildings where the declared use did not match cadastral records or planning documentation. Under Polish tax legislation, the distinction between residential and commercial classification can shift the annual tax burden by a factor of three or more. Owners who fail to challenge an incorrect reclassification within the statutory 30-day appeal period forfeit their right to contest the assessment for that tax year.

This alert explains what changed in 2025, identifies which property owners face the greatest exposure, and sets out the immediate steps required to protect your position. The structure follows the ALERT format: what changed – who is affected – what to do now.

What changed in the 2025 reclassification wave?

Polish local tax authorities – operating under oversight from the Ministry of Finance and with data supplied by the Head Office of Geodesy and Cartography (GUGiK) – launched a coordinated review of property classifications across major urban and industrial zones. The review cross-referenced cadastral data held in the Land and Building Register with tax declarations submitted by owners. Discrepancies triggered reclassification notices. The National Court Register (KRS) records for corporate owners were also checked against declared property uses.

The core legal change driving this wave is an amendment to the Local Taxes and Charges Act that took effect on 1 January 2025. The amendment tightened the definition of "residential use" and narrowed the conditions under which mixed-use buildings qualify for the lower residential rate. Buildings with any portion leased under a commercial lease – even a single storage unit – now risk full reclassification to the commercial rate. That rate currently reaches PLN 33.10 per square metre annually, compared with PLN 1.17 per square metre for residential use.

Municipalities in Silesia, Mazowieckie, and Lower Silesia issued the highest volume of reclassification notices in the first half of 2025. Poznań and Kraków followed in the second half. The notices are not limited to large commercial estates. Owners of apartment buildings with ground-floor retail units received notices in significant numbers.

We secured a reversal of a commercial reclassification affecting a mixed-use building worth over PLN 8m for a property investor in the Mazowieckie region (spring 2025). The appeal succeeded on procedural grounds – the municipality had failed to notify the co-owner of record before issuing the reclassification decision.

Who is affected – and what are the exposure thresholds?

The reclassification risk is not uniform. Three categories of owner face the highest exposure. First, owners of mixed-use buildings where any part is leased commercially. Second, foreign investors who buy property in Poland through corporate structures and declared residential use at acquisition. Third, owners whose buildings underwent renovation or change of use without a formal update to the Land and Building Register. Each category carries distinct procedural risks and different appeal strategies.

The financial exposure depends on building size. A 1,000 square metre building reclassified from residential to commercial faces an additional annual tax liability of approximately PLN 31,930. For a 5,000 square metre office or warehouse, that figure exceeds PLN 159,000 per year. Reclassification applied retroactively – which the 2025 amendment permits for up to three prior tax years – can produce a back-tax demand exceeding PLN 500,000 for mid-sized commercial properties.

Foreign investors are particularly exposed. A Netherlands-based buyer who structured a Polish acquisition without local tax advice (see our guide on buying property in Poland as a Netherlands national) may have declared residential use based on the prior owner's classification. That declaration does not bind the municipality under the 2025 rules. Swiss tenants reviewing office lease terms should also note that reclassification of the landlord's building can trigger rent review clauses – a point examined in our office lease review guide for Switzerland tenants.

We obtained cancellation of a three-year retroactive reclassification demand exceeding PLN 320,000 for a logistics operator in Lower Silesia (autumn 2025). The key argument was that the operator's lease agreement contained a FIDIC-standard force majeure clause that had temporarily suspended commercial operations – removing the building from the commercial-use definition for the disputed period.

  • Mixed-use buildings with any commercial lease component
  • Corporate owners whose KRS-registered activity differs from declared property use
  • Buildings renovated after 2020 without updated cadastral records
  • Foreign-owned structures acquired under prior classification regimes
  • Properties subject to ongoing FIDIC disputes affecting operational status

What must you do now – and by when?

The appeal deadline is 30 days from the date of the reclassification decision. Missing this deadline is irreversible for the current tax year. It also weakens your position in subsequent years, because the municipality can treat the unchallenged decision as an admission of the new classification. Acting within the first 14 days is strongly advisable – it allows time to gather cadastral documentation and instruct a real estate lawyer in Warsaw before the deadline closes.

Three immediate actions are required. First, verify the classification currently recorded in the Land and Building Register against your tax declaration. Discrepancies must be corrected before any appeal is filed. Second, check whether your building underwent any use change – including a commercial lease, even short-term – since 1 January 2022. The three-year retroactivity window means that undeclared changes from that period are now in scope. Third, if you have received a reclassification notice, instruct counsel immediately. The appeal must be filed with the issuing municipality, not with the tax chamber.

For owners who have not yet received a notice but suspect exposure, a voluntary pre-audit review is available. Submitting a corrected tax declaration before a notice is issued reduces the penalty exposure from 100% of underpaid tax to 10%. That difference can amount to tens of thousands of zloty on a mid-sized estate. Employment-related costs of building management staff may also affect the classification analysis – a point addressed in our note on severance pay calculation under the Polish Labour Code.

What to prepare before instructing counsel:

  • Copy of the reclassification decision (if received), including the date of service
  • Current extract from the Land and Building Register for the property
  • All lease agreements in force since 1 January 2022
  • Building permits and any change-of-use notifications filed since 2020

Time is the variable you control. Every day spent without a strategy is a day closer to an irreversible outcome. Specific circumstances – building size, lease structure, corporate ownership chain – determine which appeal ground applies and what the realistic recovery looks like.

For a tailored assessment of your reclassification exposure and a review of available appeal grounds, contact info@kordeckipartners.com. Our team will identify the strongest procedural argument within 48 hours of receiving your documentation.

Frequently asked questions

Q: Can a municipality reclassify my property without a physical inspection?

A: Yes. Under Polish tax legislation, municipalities may base a reclassification decision on cadastral data, KRS records, and lease agreements obtained through administrative channels. A physical inspection is not required. However, if the decision relies on incorrect data, that factual error is a valid appeal ground – and one of the most effective ones in practice.

Q: How long does the appeal process take, and what does it cost?

A: A first-instance appeal to the issuing municipality typically takes 60 days. If the municipality upholds the reclassification, you may appeal to the regional administrative court (WSA) within 30 days of that decision. Full court proceedings can take 12 to 18 months. Legal costs for a first-instance appeal generally range from PLN 5,000 to PLN 15,000 depending on the complexity of the classification dispute and the size of the property.

Q: Does reclassification affect my ability to sell or lease the property?

A: Reclassification does not directly block a sale or new lease. However, an unresolved reclassification dispute will appear in due diligence and typically reduces the achievable sale price. Buyers will discount for the contingent tax liability. A common misconception is that the buyer inherits the dispute – in fact, the liability for back-tax periods remains with the seller unless contractually transferred.

KORDECKI & Partners is a law firm based in Warsaw and Krakow, advising business clients across 30 jurisdictions. Our team combines expertise in Polish and international law with a practical approach to real estate disputes, property tax appeals, and construction law. We work with Polish entrepreneurs, foreign investors, and in-house legal teams. To discuss your situation, contact info@kordeckipartners.com.

Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. KORDECKI & Partners assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@kordeckipartners.com.