Building Snags After a Polish Renovation: Photos, Expert Reports and Quotes as Evidence

The renovation is finished, but once you look closely, you spot the snags: tiles laid crookedly, cracks in the plaster skim, a door that won't quite close properly. Now you have to prove that this is the contractor's fault, that it's genuinely a defect (not just normal wear and tear), and work out how much it costs to put right. This guide walks you through gathering evidence, when it's worth hiring a building expert, and how all of this weighs in a dispute with a contractor working under Polish law.

This guide is general legal information, not legal advice. How the rules apply depends on your contract, your evidence and the circumstances — including whether the matter is treated as a consumer, general civil, or business (B2B) dispute. Where advice or representation is needed, the matter should be assessed by a qualified Polish lawyer or an appropriate specialist. Twoja Sprawa helps you organise the documents for that assessment.

What counts as a "defect" — and how you prove it

Under Polish law, a defect (wada) is a departure from what was agreed. If the contract says "smooth wall finish" and the result is uneven — that's a defect. If the contract doesn't specify a standard, the question becomes: was the work reasonably competent, or not?

Type of snag	Is it a defect?	How you prove it
Cracks, unevenness	YES (unless the contract says "subject to natural imperfections")	Photos + measurement with a ruler/spirit level
Badly laid tiles, uneven gaps	YES	Photos + gap measurements
Paint already flaking (a month after the job)	YES	Photos + paint quality certificate / warranty terms
Something doesn't close or fit properly	YES	Photos + measurements, possibly an expert opinion
Normal wear (light scuffs, minor scratches)	NO (unless the contract promised a flawless finish)	Harder to prove — you'll need an expert's opinion on what's normal

Bottom line: always document with photos before you start putting anything right.

Step 1: Photos — not rocket science, but worth doing properly

Photos are invaluable in a dispute. They should:

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Carry a date — ideally embedded in the image itself (turn on the date stamp on your camera/phone). If it's a screenshot, mark the date on it.
Show the detail — a close-up of the cracked plaster, the gap between tiles, the peeling paint.
Be numerous — from different angles, in different lighting.
Have context — one shot of the whole room, then close-ups.
Include something for scale — a tape measure, ruler, or coin next to the defect, to show its actual size.

Example: instead of just saying "this wall is bad", include a photo with a ruler in shot showing a 3mm-wide crack.

Where to store them: on your computer and in the cloud (Google Drive, Dropbox) — in at least two places. Never rely on your phone alone.

Step 2: A formal repair request

Before you approach a building expert, put your request in writing:

Email or a recorded-delivery letter to the contractor,
Describe the problem specifically: "Cracks in the plaster skim (room 1, west wall)", with photos attached,
Give a deadline for the repair: e.g. 14 days (reasonable, but firm),
State clearly that you'll pursue a claim if nothing is done.

Why this matters: it shows you gave the contractor a fair chance to put things right. If they ignore you, a court will see that you tried to resolve this amicably before escalating.

Step 3: A second contractor's opinion — almost free

If the original contractor hasn't responded, or has refused to act, do this:

Contact another contractor working in the same trade (plasterer, tiler, etc.),
Ask for a free assessment visit — they'll come, look at the work, and tell you what's wrong,
Ask for a basic repair quote (often around PLN 50–100) for the fix.

This counts as an expert opinion — less formal than a court-appointed building expert, but courts do take it into account. In your claim you'll be able to say: "A second tradesman confirmed the defects related to…"

Step 4: A building expert (rzeczoznawca budowlany) — when it's worth it

A rzeczoznawca is a formally registered building expert — a distinct profession in Poland. On top of an opinion, they carry out measurements and tests and produce a written report.

When it's worth hiring one: - The defects are technical in nature (structural movement, deformation, damp problems), - There are multiple defects and it's a significant matter (a large sum, or a property), - You want to be well-prepared for court — an expert's report carries substantial evidential weight.

When it's probably not worth it: - The defect is obvious (tiles falling off the wall — anyone can see that), - The amount at stake is small (under PLN 1,000), while the expert will cost PLN 1,000+, - The defects have already been repaired (there's then nothing left to inspect or measure).

Typical cost of a building expert: - Usually PLN 1,000–3,000 for a detailed report, - Sometimes PLN 500–1,000 for a quick assessment and preliminary report, - It's a significant outlay — worth it mainly for higher-value claims.

Step 5: The repair quote — the basis of your claim

This is the single most important document in a defects dispute. A proper quote sets out:

What needs to be repaired,
How much it will cost in materials and labour,
Who will carry out the work (ideally a different contractor from the one who did the original, defective job).

Where to get one: - From the second contractor (the one who came for the free assessment) — ask for a formal quote, - From the building expert — reports usually include an estimated repair cost, - From several sources at once — since prices can vary between tradesmen.

Important: your quote should be: - Itemised — not just "wall repairs PLN 5,000", but "plaster skim, room 1: 200 m², materials PLN 500, labour PLN 1,500, total PLN 2,000", - Realistic — based on actual market rates, not an inflated figure, - Dated — because prices change over time.

The statutory route: Articles 638 and 636 of the Polish Civil Code

If your agreement was a umowa o dzieło — a specific-work contract under Article 627 of the Kodeks cywilny (Polish Civil Code, KC):

You are entitled to demand that the contractor puts the defect right (Article 636 KC),
You may set a reasonable deadline (e.g. 30 days),
If the contractor fails to repair the work, you can:
(a) withdraw from the contract and claim a refund of any payment already made,
(b) have the repair carried out by someone else "at the contractor's expense" (Article 636(2) KC) — meaning you pay for the fix yourself, then pursue reimbursement from the original contractor,
(c) demand a price reduction instead of a full repair.

All of these routes require evidence — photos, quotes, and an expert or trade opinion.

Consumer vs business (B2B) status

If you were a consumer (a private individual, your own home, not acting in a business capacity): - You get extra protection under Article 556 KC (non-conformity of the service with the contract), - You can demand repair or redoing of the work, and if that isn't possible — a price reduction or withdrawal from the contract, - A consumer ombudsman (rzecznik konsumentów) can help you free of charge.

If you were acting as a business (a company, commercial premises): - The rules are stricter and less protective, - Much depends on the contract wording — whether the statutory warranty (rękojmia) has been limited or excluded.

Mistakes that can sink your case

Fixing the defects before documenting them. Right after spotting a snag, the instinct is to get it fixed. But for a court, what matters is photos of the defect as found. Take them FIRST.
No date on the photos. "I took photos, but I'm not sure when" — this weakens your evidence significantly.
Overstating the problem. Describing things as "a total disaster, unliveable" invites scepticism, and a judge may reasonably ask: so why did you carry on living there? Describe the facts as they are.
An unrealistic repair quote. If the repair quote comes to PLN 10,000 but the original job only cost PLN 5,000, a court will be sceptical — an expert may well reduce the figure.
No formal repair request. Going straight to a claim without warning first. A court will look at whether you gave the contractor a fair chance.
Waiting too long. The renovation finished in May, and the claim is filed in November — why the delay? This weakens your position.

Common client mistakes, with examples

Delaying documentation. You only notice a defect a month later — but could it have appeared earlier? Without a photo dated at the time, you can't prove when it started.
Poor-quality documentation. A single photo taken from a distance isn't enough. Take at least 5–10 photos: close-ups, with something for scale.
Ignoring a second opinion. Assuming your own eye is enough. It isn't — courts expect either an expert's report or at least a trade opinion.
Not reading the contract carefully. You read the contract and find a clause saying "the contractor is not liable for natural cracking" — which weakens your case considerably. Always read the contract in full before you start.

Frequently asked questions

Is one photo enough for court? No. Courts favour a body of evidence. Take a minimum of 5 photos of the same problem — from different angles, with close-ups and something for scale. This gives the judge a full picture.

Can I use an opinion from a tradesman I know, instead of a formal expert? To some extent. A friend's or acquaintance's opinion doesn't carry the same weight as a formal building expert's report, but it's still better than nothing. In court, you can present them as a witness (if they're willing to testify). For higher-value claims, though, a proper rzeczoznawca is more credible.

How long do I have to report a defect? For a specific-work contract, the general limitation period is 2 years from handover of the work (Article 646 KC). But defects that are visible straight after the renovation should be reported without delay — so the contractor has a genuine chance to fix them. Waiting a year signals to a court that the matter wasn't treated as urgent.

What if the contractor says "yes, those cracks are there, but that's normal"? Then whether it's a defect or not becomes a question of assessment. You can: - Ask a second tradesman for their opinion on whether it's normal, - Point to industry standards or technical specifications, - Hire a building expert if the amount at stake justifies it.

Can I claim a full refund for the whole renovation if the snags are minor? Not automatically. It depends on the scale of the defects relative to the contract. If the defects amount to around 10% of the renovation's value, you can typically claim around a 10% price reduction. If the defects make the renovated space genuinely unusable, withdrawal and a full refund may be justified.

Is a quote from a competing contractor valid evidence if it's higher than the original quote? Yes, but it's one piece of the puzzle. A court will compare several quotes and assess what's reasonable for the market. If you have quotes from three different firms, that's strong evidence of what a fair market price looks like.

Checklist for a renovation defects dispute

[ ] Photos (minimum 5), dated, with something for scale
[ ] Email/letter to the contractor with a repair request (with a deadline)
[ ] The contractor's response (or lack of one — that's evidence too)
[ ] A repair quote from a second tradesman
[ ] A trade opinion (if you can get one)
[ ] A building expert's report (if you decide it's worth it)
[ ] The contract (especially any liability clauses)
[ ] Proof of payment (bank transfers, invoices for the renovation)
[ ] Photos of the state of the property before the renovation (if you have them)

Last verified: 26 June 2026.