A contract takes five minutes to sign and a year to live in. In Warsaw, most unpleasant surprises — an unexpected top-up bill, a lost deposit, an argument over a broken boiler — are baked in at the moment of signing, when you just want the keys. This is the checklist of what to verify in an umowa najmu before you put your name on it, not after.
Before anything else, do one thing: look up the district median (rent + utilities) from real tenant reports so you know whether the price is fair. The number in the listing is only the start of the conversation.
1. Utilities and top-ups: included in rent, or on top?
The core question is what exactly is inside the amount you transfer each month. The contract should clearly separate:
- Czynsz najmu — what goes to the owner.
- Czynsz administracyjny — the building fee paid to the cooperative or owners' association (maintenance, cold water, waste, the lift, often heating).
- Metered media — electricity, gas, sometimes hot water.
The key trap: water and electricity are often charged as a zaliczka (a fixed advance), then reconciled once a year (rozliczenie) — which can come back as a top-up payment. Ask directly: "Does the advance cover real usage, or will there be a top-up at year-end?" And ask for last year's rozliczenie to see the scale.
In the contract, read the wording: "czynsz w tym administracyjny" means the building fee is included; "czynsz + opłaty" means it is on top.
2. Kaucja (deposit): amount and exact return conditions — in writing
The Warsaw standard is 1–2 months' rent (the law allows up to 12, but that's rare). What must be on paper in black and white:
- The exact deposit amount and proof of payment (use a bank transfer so there's a record).
- The window for return after move-out — typically 30 days; pin down a specific number.
- What the owner may legally withhold for. By law, only for damage beyond ordinary wear and tear (zwykłe zużycie), not for faded wallpaper.
Protect yourself: at move-in, complete a protokół zdawczo-odbiorczy (handover report) with photos and meter readings, attached to the contract. Without the report, you'll almost always lose a deposit dispute.
3. Repairs: who pays for breakdowns
The fridge dies, the tap leaks, the boiler stops heating — who fixes it? Settle this in advance. The general rule in Poland: minor running repairs and consumables fall on the tenant, while serious appliance and structural failures fall on the owner. But "minor" is a stretchy word, so it helps to write a threshold into the contract: e.g. the tenant pays repairs up to a set amount, the owner above it. Clarify response times too: within how many days must the owner send someone for heating in winter.
4. Wypowiedzenie (termination): notice period and the fate of the deposit
The most expensive clause if you leave early. Verify:
- Notice period (okres wypowiedzenia) — usually 1–3 months. The longer it is, the longer you keep paying after deciding to leave.
- Fixed-term (na czas określony) or open-ended (nieokreślony). A fixed-term contract generally cannot be terminated early unless it explicitly lists grounds for wypowiedzenie. Without such a clause, leaving early can cost you rent through the end of the term.
- Whether the deposit is forfeited on early exit. This is sometimes written in as a penalty — find that wording before you sign.
5. The real all-in monthly cost
Add everything up before you call a flat affordable: czynsz najmu + administracyjny + an estimate for media (electricity, gas, heating higher in winter) + internet. A 3,000 PLN listing easily becomes 3,800–4,500 PLN in practice. Ask for last year's bills — a responsible owner has them ready. Then compare your total against the district median (rent + utilities) to see whether you're overpaying.
6. Owner documents: confirm they actually own it
This step gets skipped most often — and shouldn't.
- The księga wieczysta (KW) number. This is the land and mortgage register number. With it you can check, for free, who owns the flat on the official portal ekw.ms.gov.pl. The name in the register should match whoever is signing the contract.
- Signatures from every co-owner. If there are multiple owners (e.g. spouses or heirs), all of them must sign — or the signer must hold a power of attorney (pełnomocnictwo). Otherwise the contract can be challenged.
- The signer's ID — match the name against the KW.
Najem okazjonalny vs. standard: with najem okazjonalny, you additionally sign a notarial statement agreeing to vacate when the contract ends, and the owner registers the lease with the tax office. It's a legal, common form and a sign of an organized landlord; the notary fee is usually modest. A standard contract requires no such statement. Just understand what you're signing.
How Passflat helps
Before you sign, Passflat answers the one question no contract settles: is the price fair? We show district medians — rent and utilities — from real tenant reports, not from asking prices in listings. That's your benchmark for judging whether the figure in the umowa najmu is in line with the area, and your basis for negotiating.
Check the real cost of rent and utilities by district on Passflat →