Roommates in Prague: finding a flatmate and splitting bills

Four people, one bathroom, a fridge with a hierarchy and a gas bill in the name of someone who left in March. Flatsharing in Prague is a good way to live well on less, but a shared flat runs on paperwork and manners in equal parts. Get both right in week one.

Where to find a flatmate

Most people find flatmates through friends of friends, university and company noticeboards, online flatmate groups and listing sites with a room filter. Our guides to cheap rooms in Prague and apartments for students say where to look, and renting with no Czech helps if you are new.

Meet before you commit. Ask about working hours, guests, cleaning, smoking, pets and noise. If a stranger wants a deposit before you have met, walk away; the rental scams guide explains why.

Two ways to share

One lease for everyone. All flatmates sign the same contract with the landlord as co-tenants. It is the simplest set-up in law: everyone has the same rights, and co-tenants are generally jointly liable for the whole rent and for damage. If one person disappears, the landlord can look to the others for the shortfall. Ask about that before you sign.

One main tenant, others in sublet rooms. One person holds the lease and lets rooms to the rest. Subletting needs the landlord's consent, and the safe course is to have it in writing, because without it you risk breaching the lease. The main tenant answers to the landlord, and the room-renters rely on the main tenant. Make sure your room agreement is written and states the rent, the deposit and the notice.

The deposit and the exit

The deposit is capped at three months' rent and returned at the end of the lease. On a joint lease, decide how it is split and who gets it back if one person leaves first. When a flatmate leaves mid-lease, the clean way is to agree a replacement with the landlord in writing so the old and new co-tenants are named correctly. The same rules apply as in ending a rental in Prague: handover protocol, photos and meter readings.

Splitting the money

Money is where shared flats crack. Keep it simple and visible.

Service advances, electricity and internet are the usual shared bills. Who pays what shows how they work and how the annual settlement can add a surprise. Whoever leaves still owes a share of that.

Registering the address

Each flatmate who registers needs the owner's consent, so ask the landlord for written consent for each person, not only for the main tenant. EU citizens staying longer than 30 days report within 30 days. Third-country nationals report within three working days of arrival, and residence permit holders handle later address changes through the Ministry of the Interior (as of 2026; check mvcr.cz).

House rules on one page

Rules do not need to be legalistic. They need to be written, shared and agreed. Include a moving-out clause covering the notice, how the room is re-let and who may bring in a replacement. Check the lease before anyone brings a pet; renting with a pet has the detail. Overnight guests are usually fine, but long stays can prompt questions from the landlord. Noise is the main source of conflict, so agree quiet hours and respect the neighbours.

When it goes wrong

If a flatmate stops paying, speak to them first, then send a written reminder with the amount and date. On a joint lease the landlord looks to the co-tenants, so you may have to cover the gap and recover it afterwards. As a sub-tenant, your agreement is with the main tenant, who carries the risk with the landlord.

If someone wants to leave, agree the date and the replacement. The easiest solution is a new person who takes over the room and the share of the deposit, with the landlord's written approval. The hardest is a flatmate who disappears: keep screenshots and bank records, and take legal advice if the sum is large. If you simply cannot live together, end it by agreement, in writing, with a clear date. The timeline in moving within Prague adapts well.

Most conflicts are about small things: dishes, bathroom time, guests. A rota is boring and effective. A shared shelf and a personal shelf end the milk wars. A group chat for the flat keeps messages short, and a monthly ten-minute check-in catches problems early. None of it is complicated, but someone has to start it.

Frequently asked questions

Do I need the landlord's permission to take a flatmate?

For subletting, yes, and it is wise to have it in writing. If the flatmate signs the lease as a co-tenant, the landlord is part of the contract.

Are flatmates liable for each other's rent?

On a joint lease, co-tenants are generally jointly liable. Read your contract and ask a lawyer if unsure.

How should we split the deposit?

Agree in writing how much each pays and who gets it back when. Keep the bank record.

What if a flatmate stops paying?

Talk first, then check the lease and agreements. On a joint lease the landlord can ask the others to cover it.

Start the shared spreadsheet on move-in day, while everyone is still on their best behaviour.

This is a general explainer, not legal or tax advice.