Subletting on Airbnb - Is It Legal and How to Protect Yourself in 2026?

Subletting on Airbnb - Is It Legal and How to Protect Yourself in 2026?

You're renting an apartment and want to earn extra money by subletting it on Airbnb or Booking? Or maybe you're already doing it and just starting to wonder whether it's even legal? Short-term subletting is one of the most common models in the STR industry - and at the same time one of the riskiest. Because the truth is: without written consent from the landlord, subletting is illegal and can result in immediate termination of your lease. In this article, I explain step by step how to legally sublet an apartment on platforms, what to avoid, and how to protect yourself legally in 2026, when new regulations come into effect.

Key Takeaways

• Subletting without written consent from the landlord is illegal and constitutes grounds for immediate termination of the lease
• Consent for subletting must be explicit, in writing, and ideally included in the lease as an addendum
• It's the tenant (the subletter) who registers in CWTON (Central Register of Tourist Accommodation), not the property owner
• Subletting on Airbnb generates taxable income - regardless of whether you have a registered business
• Standard tenant insurance does not cover you when operating a short-term rental

Legal basis: what does the Civil Code say?

Let's start with the foundation. Article 688² of the Kodeks cywilny (Civil Code) is clear: a tenant may not, without the landlord's consent, allow the premises or any part thereof to be used free of charge, nor may they sublet it. This is not a recommendation. It's not a suggestion. It's a mandatory legal provision, and violating it has concrete consequences.

What does this mean in practice? If you're renting an apartment under a lease agreement and want to sublet it on Airbnb, Booking, or any other platform - you must have written consent from the landlord. Without it, every day that guests stay in "your" apartment is a day of breaking the law.

When is consent not required?

Article 688² applies to residential premises. It's worth noting that for commercial premises, a slightly different regime applies (Article 668 of the Civil Code), but for most hosts - those renting out apartments - Article 688² applies. There are no exceptions, legal loopholes, or workarounds here. The landlord's consent is absolutely required.

Consequences of subletting without consent

Now that you know consent is required, let's talk about what happens when you don't have it. The scenarios are serious.

Immediate lease termination

Subletting without the landlord's consent constitutes a gross violation of the lease agreement. The landlord has the right to terminate the lease without observing notice periods under Article 667 § 2 of the Civil Code in conjunction with Article 680. This means you can lose the apartment overnight - without warning, without a second chance.

In the case of najem okazjonalny (occasional tenancy) or najem instytucjonalny (institutional tenancy), the procedure can be even faster, as these agreements contain additional protections for the landlord, including a declaration of submission to enforcement.

Liability for damages

As a tenant, you're responsible for the condition of the apartment. If your Airbnb guests damage furniture, appliances, flooring, or walls - you bear the liability, not them. Of course, you can try to pursue claims against the guests, but in practice, recovering money from a tourist who returned to their country long ago is extremely difficult.

Financial claims

The landlord can demand from you:

• Compensation for damages resulting from use through subletting
• Unjust enrichment - meaning the return of profits you earned from the illegal subletting
• Costs of court proceedings and eviction

Imagine: you rent an apartment for 3,000 PLN per month and sublet it on Airbnb for 300 PLN per night. With 20 nights per month, you earn 6,000 PLN. The landlord can demand the return of the difference - 3,000 PLN per month for the entire period of illegal subletting. Over a year, that's 36,000 PLN.

Loss of security deposit

The security deposit paid when signing the lease will almost certainly be forfeited. The landlord will deduct it against claims, and recovering it in a situation where you violated the agreement is practically impossible.

How to obtain the landlord's consent for subletting?

Good news: many landlords are open to subletting, especially if they see a financial benefit. The key is the right approach and professional preparation.

When to talk to the landlord?

The best time is before signing the lease. It's much easier to negotiate a subletting clause when entering the agreement than to ask for an addendum later. If you already have a lease - the sooner you talk, the better. Every day of subletting without consent is additional risk.

How to present the proposal?

The landlord wants to know three things: is it legal, will the apartment be safe, and what's in it for them. Prepare for these questions:

• Show a plan - how many nights per month you plan to rent, on which platforms, what type of guests
• Propose a higher rent - many landlords will agree to subletting if they get a share of the profits (e.g., 20-30% above the standard rent)
• Present safeguards - additional deposit, liability insurance, house rules for guests
• Show that you know the regulations - CWTON (Central Register of Tourist Accommodation) registration, required documentation, compliance with new regulations
• Propose a trial period - e.g., 3 months, after which both parties evaluate whether the arrangement works

What should the subletting consent clause include?

Consent for subletting must be in writing and unambiguous. Ideally, it should be part of the lease agreement (or an addendum). A well-constructed clause should specify:

1. Explicit consent for subletting the premises in the form of short-term rental (up to 30 days)
2. Platforms on which the sublet may be offered (e.g., Airbnb, Booking.com)
3. Maximum number of guests simultaneously staying in the premises
4. Tenant's obligations - property maintenance, house rules, guest register, CWTON registration
5. Division of responsibilities - who pays for utilities, repairs, insurance
6. Conditions for revoking consent - in what situations the landlord can revoke subletting permission
7. Additional compensation for the landlord (if agreed upon)
8. Duration - whether consent is indefinite or for a fixed period

Oral consent is not enough. A text message from the landlord saying "ok, go ahead and rent" is not enough. In a dispute, the court will look for clear, written consent. Without it, your position is weak.

CWTON registration for subletting - who registers?

This is one of the most frequently asked questions. From May 20, 2026, every short-term rental property must be registered in CWTON (Central Register of Tourist Accommodation). But who registers when the apartment is being sublet?

The answer: the person who actually offers the property for short-term rental registers - that is you, the tenant and subletter. Not the property owner (unless they are the ones conducting the rental).

What does this mean in practice? You'll find details in the article on how to register in CWTON, but here are the key points for subletters:

• You register as the host - providing your details, NIP/PESEL, property data
• You must have legal title to use the property - in your case, this is the lease agreement with a subletting consent clause
• The owner doesn't need to register - unless they also operate a short-term rental themselves
• The CWTON number must be displayed in all your listings on platforms

Important: when registering in CWTON, you must declare that you have the right to rent the property. If you don't have the landlord's consent - you're making a false declaration, which is an additional legal problem.

Tax issues with subletting

Regardless of whether your subletting is legal (you have consent) or illegal (you don't) - income from subletting is subject to taxation. The tax office doesn't care whether you have the landlord's consent. It cares whether you've paid your taxes.

Flat-rate tax on revenue

The most popular form of taxation for short-term rental is the ryczałt (flat-rate tax). Rates in 2026:

• 8.5% on revenue up to 100,000 PLN per year
• 12.5% on revenue above 100,000 PLN per year

Revenue is what you receive from guests (after deducting the platform's commission). Rent paid to the landlord is not a deductible cost - with the flat-rate tax, you don't deduct expenses.

Do you need a registered business?

It depends on the scale. We discuss this in detail in the article on short-term rental and business registration. In brief:

• Privately subletting one apartment - typically doesn't require business registration
• Subletting several apartments, systematically, for profit - characteristics of a business activity
• Subletting multiple apartments in a rental arbitrage model - almost certainly requires business registration

If you sublet several apartments simultaneously (the "rental arbitrage" model), the tax office may determine that you're running an unregistered business. That's additional risk on the list.

Insurance - the gap nobody talks about

Have tenant insurance? Great. But it almost certainly doesn't cover you for short-term rental. This is one of the most serious risks that many subletters don't know about until it's too late.

Why isn't standard insurance enough?

Standard tenant liability insurance or property insurance for rented premises assumes that you live in the unit and use it as intended. Operating a short-term rental changes the risk profile:

• Rotation of people in the unit - every new guest is a new risk
• No permanent supervision - guests are left alone in the apartment
• Commercial activity - private insurance doesn't cover business operations
• Liability to third parties - a guest who slips in the bathroom can sue you

You can read more about host insurance in the article on host liability insurance. The key is having a policy that explicitly covers short-term rental.

What to do?

Inform your insurer about operating a short-term rental and ask whether your current policy covers it. If not - purchase dedicated host liability insurance. The cost is typically 300-800 PLN per year, depending on the scope and property value.

Debunking subletting myths

In the STR industry, there are many "tips" circulating that can get you into serious trouble. Time to debunk them.

Myth 1: "If the landlord doesn't know, there's no problem"

This is probably the most common and most dangerous myth. The fact that the landlord doesn't know about the subletting doesn't make it legal. Article 688² of the Civil Code requires consent, not merely the absence of objection. The landlord's lack of knowledge is not consent. And platforms like Airbnb publish listings with the exact address (at least the neighborhood) - the landlord or their friends can find them. Plus, neighbors are happy to inform landlords about guest rotation in the apartment.

Myth 2: "Verbal consent is enough"

Verbal consent is theoretically valid but practically worthless. If a dispute arises, the landlord can simply deny giving such consent. It's your word against theirs - and in court, the person with documentation wins. Always require written consent, preferably in the form of a lease addendum.

Myth 3: "Airbnb will protect me"

Airbnb's AirCover program protects you against certain damages caused by guests, but it does not protect you from the consequences of illegal subletting. Airbnb doesn't verify whether you have the right to sublet a given apartment. That's your responsibility. If the landlord terminates your lease - Airbnb won't defend you.

Myth 4: "Subletting isn't a business, so I don't need to register anywhere"

Regardless of whether subletting is your business activity or not - from May 2026 you must register the property in CWTON (Central Register of Tourist Accommodation). Failure to register carries a fine of up to 50,000 PLN and removal of listings from platforms. Details about penalties can be found in the article on CWTON registration.

Myth 5: "The landlord can't stop me"

They can, and clearly so. The landlord has full right to refuse consent for subletting - without giving any reason. They can also include an explicit subletting prohibition in the lease agreement. And if you violate that prohibition, the consequences can be immediate and severe.

How to legally secure your subletting - checklist

If you decide to sublet, here's the list of things you must handle before accepting your first guest.

1. Obtain written consent from the landlord - preferably in the form of a lease addendum with a precise subletting clause
2. Register in CWTON - as a host, providing property data and your legal title to use it
3. Prepare documentation - house rules, fire safety declaration, guest register (required from May 2026)
4. Purchase appropriate insurance - host liability insurance covering short-term rental
5. Report income to the tax office - choose a form of taxation (flat-rate or general rules)
6. Ensure data protection compliance - guests are subject to GDPR regulations
7. Inform the homeowners' association/cooperative - while not mandatory, it builds good relations
8. Document the apartment's condition - photos before starting subletting, inventory list with condition description

The rental arbitrage model - specific risks

Rental arbitrage is a model where you rent several apartments long-term and then sublet them short-term for profit. It's a popular business model, but it carries specific risks.

Scale changes the legal classification

One sublet apartment is one thing. Five sublet apartments, with advertising on platforms, with a reservation management system - that's organized, continuous commercial activity. The tax office will almost certainly classify this as a business, which means:

• Obligation to register a business (CEIDG)
• ZUS (social security) contributions
• Full accounting or KPiR (revenue and expense ledger)
• VAT (if revenue exceeds 200,000 PLN per year)

Cascading risk

When one landlord revokes subletting consent or terminates the lease - you lose one income source but still have fixed costs (rent for other apartments, fees, insurance). With several apartments, the cascading effect can be devastating. Protect yourself: keep a financial reserve for at least 3 months of fixed costs and diversify your landlords.

Multiple liability

You're responsible for the condition of every sublet apartment. If a guest in one of them causes serious damage - you're liable to the landlord, while simultaneously needing to maintain financial liquidity for the remaining properties. Without solid insurance and financial reserves, this model is like walking a tightrope without a safety net.

How to talk to the landlord - a negotiation script

Many hosts dread this conversation. But it's one of the simpler steps - if you prepare properly.

Before the conversation

Prepare specific numbers and documents:

• A revenue calculation from subletting and a proposed profit-sharing arrangement
• A template subletting consent clause (ready to insert into an addendum)
• Information about your liability insurance
• A template house rules for guests
• Information about CWTON registration and new legal requirements

Key arguments

The landlord fears three things: apartment damage, problems with neighbors, and legal trouble. Address these concerns:

• "I have liability insurance that covers damages caused by guests"
• "Every guest receives house rules with regulations - including quiet hours"
• "I will register in CWTON, so everything will comply with the new regulations"
• "I propose increasing the rent by X% as compensation for increased wear"
• "Let's start with a trial period - 3 months, after which we'll evaluate"

If the landlord refuses

Respect the decision. Don't sublet without consent - the risk is too great. Look for another apartment whose landlord is open to subletting, or consider purchasing your own property for short-term rental. A legal zero is better than an illegal six thousand per month that could end with losing the apartment and a claim for tens of thousands.

Frequently Asked Questions

Can I sublet an apartment without the landlord's consent?

No. Article 688² of the Kodeks cywilny (Civil Code) clearly prohibits subletting a residential premises without the landlord's consent. Lack of consent constitutes a gross violation of the lease and entitles the landlord to immediate lease termination. There are no exceptions here - even if the lease is silent on subletting, the statutory prohibition applies by default.

Can the landlord prohibit subletting in the lease?

Yes, and they don't need to give a reason. The landlord has full right to include a clause in the lease explicitly prohibiting subletting. Even without such a clause - lack of consent means prohibition (because Article 688² of the Civil Code requires active consent, not an active prohibition). If the lease contains a subletting ban, your only options are renegotiating the lease or finding another apartment.

Who registers in CWTON - the tenant or the owner?

The person who actually offers the property for short-term rental registers. If you are the one subletting the apartment on Airbnb - you register in CWTON (Central Register of Tourist Accommodation). The owner doesn't need to register (unless they also operate a short-term rental for another property). When registering, you must demonstrate legal title to the property - in your case, this will be the lease agreement with a subletting consent clause.

What consequences await for illegal subletting?

The list is long: immediate lease termination, loss of security deposit, a claim for return of profits from the illegal subletting (unjust enrichment), liability for all damages caused by guests, and from May 2026 - additional sanctions for lack of CWTON registration (a fine of up to 50,000 PLN). On top of that, there's tax risk - unreported income can result in penalties from the tax office.

Does subletting on Airbnb require a registered business?

It depends on the scale and regularity. Occasional subletting of one apartment - probably not. Regular subletting of several apartments in a rental arbitrage model - almost certainly yes. The criteria are: organization, continuity, profitability, and participation in commerce. If you have doubts, consult a tax advisor - the cost of a consultation (200-400 PLN) is nothing compared to the consequences of incorrect classification.

Summary

Subletting on Airbnb can be legal and profitable - but it requires solid legal preparation. The foundation is written consent from the landlord, without which everything else loses meaning. On top of that comes CWTON (Central Register of Tourist Accommodation) registration, appropriate insurance, income taxation, and complete property documentation.

Don't risk subletting "off the books." The consequences - from losing the apartment to claims of tens of thousands - far outweigh the potential profits. Do it right from the start: obtain consent, register, prepare your documents, and operate your rental professionally.

Need complete documentation for legal subletting? The HostReady Package contains all required documents - house rules, fire safety declaration, guest register template, and GDPR information clauses - ready to use by both property owners and subletters.