How to Dispute a Contractor in Poland (rękojmia vs Guarantee)

Knowing how to dispute a contractor is essential for any homeowner or property investor dealing with defective construction work in Poland. The Polish Civil Code gives clients two distinct legal tools, rękojmia (statutory warranty) and gwarancja (contractual guarantee), each with different remedies, deadlines and enforcement procedures. For real-estate construction projects, the statutory defect period extends to five years, creating a meaningful window for claims that many clients fail to use in time. This guide walks through every practical step, from documenting defects on the day you discover them through to filing a civil claim in a Polish court, so you can protect your rights and recover what you are owed.

How to Dispute a Contractor in Poland, Immediate Steps

The moment you discover a defect, the clock starts running. Acting quickly, and in the right order, preserves evidence, strengthens your legal position and often pushes contractors toward a voluntary fix before the matter ever reaches court.

Step 1, Stop Work and Document the Issues Now

If construction is still in progress, instruct the contractor to halt any further work on the affected area. Continuing work risks destroying evidence of the defect and can complicate any later claim. Begin creating a photographic and video record immediately:

• Photo log. Take time-stamped photographs of every defect from multiple angles. Include wide shots that show the defect’s location within the property and close-ups that capture detail.
• Video walk-through. Record a narrated walk-through of the site, describing each defect as you film it.
• Witness names. Note the names and contact details of anyone present, neighbours, sub-contractors, site supervisors, who can confirm what they saw.
• Communication log. Save every text message, email and WhatsApp exchange with the contractor. Screenshot conversations on platforms that do not provide easy export.
• Contract and payment records. Gather the original contract, all annexes, any change orders and proof of payment.

This initial evidence package forms the backbone of any contractor dispute in Poland, whether you resolve it informally or proceed to litigation.

Step 2, Notify the Contractor in Writing

Polish law requires that you give the contractor an opportunity to remedy the defect before escalating. A written notice (wezwanie do usunięcia wad) is both a legal prerequisite and a practical lever. Your notice should include:

• Date and delivery method. Send the notice by registered post (list polecony) so you have proof of delivery. Email can supplement but should not replace physical mail.
• Precise defect description. Describe each defect with reference to the relevant section of the contract or technical specification.
• Demand. State clearly whether you are requesting repair, replacement, a price reduction, or, in severe cases, rescission of the contract.
• Deadline. Set a reasonable deadline for the contractor to respond and begin remedial work. Fourteen to thirty days is typical for construction defects, depending on their complexity.
• Consequences of inaction. Note that failure to respond will lead you to pursue statutory remedies, commission an independent expert and, if necessary, initiate court proceedings.

Step 3, Collect an Expert Opinion and Site Protocol

If the contractor disputes the existence or severity of the defect, or simply ignores your notice, you need independent evidence. In Poland, a court-appointed expert (biegły sądowy) frequently provides the decisive opinion in construction disputes. However, you can and should commission a private expert report before filing a claim:

• Choose a qualified expert. Look for a licensed construction expert registered on your regional court’s list of biegli sądowi, or a certified building surveyor with relevant specialisation.
• Define the scope. Ask the expert to identify the defects, assess whether they result from the contractor’s work, estimate the cost of repair, and state whether the defect renders the property unfit for its intended purpose.
• Prepare a site protocol. The expert’s written site inspection protocol, signed and dated, carries significant weight both in negotiation and later court proceedings.

Industry observers note that expert fees for a standard residential defect inspection in Poland typically range from PLN 2,000 to PLN 8,000, depending on the scope and location. This is a worthwhile investment: courts routinely rely on biegły opinions when determining liability and damages.

Rękojmia (Statutory Warranty) vs Guarantee (Gwarancja), What Is the Difference and When to Use Each

Understanding the distinction between rękojmia and gwarancja is central to knowing how to dispute a contractor effectively. Both offer remedies for defective work, but they operate under different rules and timelines.

What Is Rękojmia (Statutory Warranty)?

Rękojmia is a statutory right under the Polish Civil Code (Articles 556–576, applied to construction works contracts via Article 638). It arises automatically by operation of law, no contract clause is needed. When a contractor delivers work with a defect, the client may demand one or more of the following remedies:

• Repair of the defect at the contractor’s expense.
• Replacement of the defective element or component.
• Price reduction proportionate to the decrease in value caused by the defect.
• Rescission of the contract (withdrawal), but only where the defect is material, meaning the completed work is essentially unfit for purpose.

For construction works on real estate, houses, apartments, commercial buildings, the statutory defect period under Article 568 of the Civil Code is five years from the date the work is handed over to the client. For other types of works (e.g., movable installations, furniture fitting), the standard period is two years. These deadlines are critical: once they expire, the right to invoke rękojmia is lost unless the contractor deliberately concealed the defect.

What Is a Guarantee (Gwarancja)?

A guarantee is a voluntary commitment, typically set out in the construction contract or a separate guarantee document. The contractor (or, in some cases, a materials manufacturer) promises to remedy defects that appear during a specified period and under specified conditions. Unlike rękojmia, the terms of a guarantee are entirely contractual, the scope, duration and remedies depend on what the parties agreed. Some guarantees are generous (ten-year coverage for structural elements); others are narrow and exclude common issues like surface finishes or minor cracking.

Crucially, a guarantee does not replace rękojmia. Both rights exist in parallel, and a client can choose which to invoke on a defect-by-defect basis.

Choosing Between Rękojmia and Gwarancja

In practice, the choice depends on timing, scope and the specific remedies available under each route:

• Use rękojmia when the guarantee has expired but the statutory five-year window for real estate remains open, or when the guarantee’s terms exclude the defect in question, or when you need a remedy (such as price reduction or rescission) that the guarantee does not offer.
• Use the guarantee when it provides a longer coverage period than rękojmia, or when the guarantee offers faster or more convenient remedies, for example, a manufacturer’s pledge to replace materials at no cost.
• Invoke both simultaneously if the defect falls within both timeframes and you want to maximise pressure on the contractor. Note, however, that pursuing a claim under the guarantee suspends the running of the rękojmia period for the duration of the guarantee process.

Deadlines and Timelines, 5-Year Defect Rules and How Time Runs

Failing to act within the correct deadline is the single most common reason contractor dispute claims fail in Poland. The table below summarises the key differences.

Real Estate (5 Years) vs Other Works (2 Years)

The five-year period under Article 568 of the Civil Code applies to defects in real estate, which courts have consistently interpreted to include buildings, permanent structures, installations integral to a building (plumbing, electrical, HVAC) and structural elements such as foundations, walls and roofing. Renovation works that affect the fabric of a building, such as re-plastering, re-roofing or re-flooring, are also widely regarded as falling within the five-year scope. By contrast, standalone works on movable items (custom furniture, garden sheds on skids, temporary structures) generally attract the shorter two-year window.

When Does the Clock Start?

For construction contracts in Poland, the defect period begins on the date of handover, the formal acceptance protocol (protokół odbioru) signed by both parties. If you refused to sign the acceptance protocol because defects were visible at that stage, the date of actual delivery or the date you took possession is typically used instead. If the contractor made repairs and you subsequently accepted the corrected work, the clock restarts from the date of that second acceptance only for the specific defect that was repaired, not for the project as a whole. Keeping a signed and dated acceptance protocol is therefore critical evidence in any contractor dispute in Poland.

Evidence and Proof, How to Preserve and Present Defects

Evidence wins or loses construction disputes. Polish courts place heavy emphasis on documentary proof, and the more thorough your records, the stronger your negotiating position, even if the matter never reaches a courtroom.

Immediate Evidence Checklist

• Time-stamped photographs and video of every defect, taken on the day of discovery and at regular intervals thereafter.
• Original contract and all annexes, including technical drawings, specifications and any change orders.
• Payment receipts and bank transfers showing amounts paid and the schedule of payments against milestones.
• All written communications, emails, letters, text messages, WhatsApp conversations, between you and the contractor.
• Acceptance protocol (protokół odbioru), if signed, include a copy; if refused, note the date and reasons in writing.
• Witness statements, short written accounts from neighbours, sub-contractors or anyone who observed the defective work.
• Weather and site-condition records, relevant where the contractor claims the defect was caused by external factors.

Site Protocols and Expert Reports, Commissioning a Biegły

A biegły sądowy (court-registered expert) provides the gold standard of independent evidence in Polish litigation of claims. Even before filing a lawsuit, a private expert inspection generates a professional report that:

• Identifies and categorises each defect (material vs cosmetic).
• Determines causation, whether the defect results from the contractor’s workmanship, materials, design or external factors.
• Estimates the cost of remedial works.
• Assesses whether the defect renders the property unfit for its intended use (relevant to rescission claims).

When commissioning an expert, provide the full evidence package described above. Ensure the expert conducts a formal site visit and produces a signed, dated protocol. If the dispute proceeds to court, the judge may appoint their own biegły, but your private report frames the issues and often guides the court expert’s investigation.

How to Use Evidence in a Claim

Organise your evidence chronologically, from the contract signing through to the most recent correspondence. Attach the expert report as a stand-alone annex. In your written notice to the contractor (and later in any statement of claim), reference each piece of evidence by number and date. Courts in Poland expect precise documentary references; vague assertions unsupported by records are routinely disregarded. For a detailed evidence preparation template, see our evidence checklist for construction defects guide.

Negotiation, ADR and Complaint Routes Before Court

Court proceedings should be a last resort. Most contractor disputes in Poland are resolved, or at least narrowed, through structured negotiation or alternative dispute resolution.

Mediation and Conciliation

Polish law encourages mediation at every stage. You can propose mediation in your initial written notice, and courts frequently refer parties to mediation even after a claim is filed. Mediation sessions are confidential, faster and far less expensive than litigation. A mediator experienced in construction law can help both sides reach a practical settlement, for example, a partial refund combined with completion of repairs by a different contractor. If you are unsure whether arbitration or litigation is the better route, consider that mediation preserves commercial relationships and avoids the public nature of court proceedings.

Consumer Complaints and Official Channels

Homeowners who contracted a builder in a consumer capacity (i.e., not acting as a business) can lodge complaints through official channels. The Polish government’s Biznes.gov.pl portal provides guidance on consumer rights, warranty and guarantee claims. Municipal and county consumer ombudsmen (powiatowy rzecznik konsumentów) offer free advice and can intervene on your behalf. Trade and industry bodies may also have complaint procedures, although their enforcement power is limited.

When to Escalate to Court

Escalate to court when the contractor refuses to repair or compensate, ignores your written notice, denies the defect exists despite expert evidence, or becomes unreachable. You should also consider court proceedings if the statutory deadline is approaching and you need to preserve your claim, filing a lawsuit interrupts the running of the limitation period.

Suing a Builder in Poland, Court Steps Simplified

Yes, you can sue someone in Poland for defective construction work. The process is more structured than many clients expect, and understanding the basics removes much of the uncertainty.

Jurisdiction and Which Court to File In

Civil claims in Poland are filed in the court of general jurisdiction of the defendant’s registered address or, for real-estate-related claims, the court in whose district the property is located. Poland’s court system has two tiers of first-instance courts: district courts (sądy rejonowe) and regional courts (sądy okręgowe). The dividing line is the value of the claim. Understanding the roles of plaintiff and defendant in Polish proceedings helps you prepare the correct procedural documents.

Small Claims vs Full Civil Claim

Claims with a value up to PLN 75,000 are heard in district courts and may be processed under a simplified procedure (postępowanie uproszczone), which uses standardised court forms, limits evidence submissions and generally moves faster. Claims above PLN 75,000 are filed in regional courts under the standard civil procedure, which allows more extensive evidence and expert testimony but takes longer. Court fees in Poland are proportional to the value of the claim, typically 5% of the amount claimed, subject to statutory caps. Legal representation is not mandatory in district court, but it is strongly advisable for construction disputes given the technical complexity involved.

Typical Timeline and Process

A standard construction defect lawsuit in Poland proceeds through the following stages:

1. Filing the statement of claim (pozew) with all supporting evidence.
2. Service on the defendant, the court serves the claim and the contractor has 14 days to file a response.
3. Preparatory hearing, the judge reviews both positions, may order mediation, and sets the evidentiary schedule.
4. Expert appointment, the court appoints a biegły sądowy to inspect the site and submit a report (this stage alone can take three to six months).
5. Main hearing, witness testimony, cross-examination, and argument.
6. Judgment, the court issues a first-instance ruling. Appeals go to the relevant regional or appellate court.
7. Enforcement, if the contractor does not comply voluntarily, enforcement proceedings through a court bailiff (komornik) follow.

Industry observers note that first-instance construction cases in Polish courts typically take between 12 and 24 months, depending on the court’s caseload and the complexity of the expert evidence.

Practical Templates and Sample Wording

Having ready-to-use templates accelerates the process and reduces the risk of procedural errors. Below are simplified outlines, adapt them to your specific facts and consult a lawyer before sending:

Written notice to contractor (demand to repair):

“I hereby notify you, pursuant to Article 556 et seq. of the Polish Civil Code, that the following defects have been identified in the construction works completed under our contract dated [date]: [list defects with reference to contract clauses]. I demand that you remedy the above defects within [14/21/30] days of receipt of this notice. Failure to do so will result in my pursuing statutory remedies, including a claim for price reduction and/or damages.”

Opening paragraph for a statement of claim:

“The Plaintiff claims the sum of PLN [amount] from the Defendant, representing the cost of remedial works necessary to rectify construction defects in the property located at [address], arising from the Defendant’s breach of the construction works contract dated [date] and the Plaintiff’s rights under rękojmia (Articles 556–576, applied via Article 638 of the Civil Code).”

For comprehensive, downloadable versions of these documents, see our sample notice to contractor templates (coming soon). If your dispute involves arbitration, our guide to preparation and conduct of arbitration hearings may also be useful.

When to Hire a Lawyer, Red Flags and Cost Considerations

Not every contractor dispute Poland requires a lawyer from day one. Simple defects that the contractor acknowledges and agrees to fix can often be resolved through the notice procedure described above. However, you should retain a construction disputes lawyer immediately if:

• The claim value exceeds PLN 75,000 (regional court jurisdiction, complex procedure).
• The contractor has become insolvent, is winding up, or has disappeared.
• Multiple defects overlap, structural, mechanical and finish, requiring coordinated expert evidence.
• The statutory limitation deadline is approaching and you need to file urgently.
• The contractor has counterclaimed or is threatening to lien the property.

When choosing a lawyer, look for verified experience in construction litigation, familiarity with court-appointed expert procedures, and a clear fee structure (fixed fee, hourly rate or success-based). Checking how to verify a contractor, or their legal representative, in Poland through official registers and professional body databases is equally important at this stage.

How to Dispute a Contractor in Poland, Conclusion and Next Steps

Knowing how to dispute a contractor means acting quickly, documenting everything and choosing the right legal tool, rękojmia for statutory protection, gwarancja for contractual remedies, or both. Preserve your evidence from day one, send a clear written notice with a deadline, and commission an expert report before making any concession. If negotiation and mediation fail, Polish courts provide a structured path to compensation, and the five-year defect window for real estate gives you meaningful time to act. Do not wait until deadlines are about to expire: consult a qualified Poland dispute resolution lawyer as early as possible to protect your position.

Sources

1. Biznes.gov.pl, Consumer Rights (Poland)
2. TGC Corporate Lawyers, Implied Warranty and Guarantee in the Construction Works Contract
3. Polish Civil Code (ISAP, Internetowy System Aktów Prawnych)
4. Wardyński & Partners, Construction Disputes
5. Dudkowiak & Putyra, Litigation in Poland
6. Codozasady, Supreme Court Resolutions on Construction Contracts
7. CMS Expert Guides, Product Liability & Warranty Litigation (Poland)
8. Federacja Konsumentów, Pursuing Consumer Claims in Poland