Subletting — renting all or part of your home to a third party — can be a practical solution when you need to travel, reduce costs, or exit a tenancy before the end of the fixed term. But most residential leases restrict or prohibit subletting, and violating a subletting clause can have serious consequences including eviction. Here is what you need to know.
Types of Subletting Clauses
Subletting clauses generally fall into three categories:
- Absolute prohibition: "The tenant shall not sublet or part with possession of the whole or any part of the premises." Under this clause, subletting is never permitted regardless of the circumstances.
- Qualified restriction (most common): "The tenant shall not sublet without the prior written consent of the landlord, such consent not to be unreasonably withheld." This allows subletting but only with landlord approval.
- Permitted with conditions: Some leases allow subletting of a room (in shared houses) or short-term subletting during absences, subject to specific conditions.
When Must the Landlord Consent?
In many jurisdictions, if a lease says "consent not to be unreasonably withheld," the landlord is legally required to give consent unless they have a genuinely good reason to refuse. A landlord cannot simply refuse without reason — they must show why subletting would cause them harm or violate a legitimate interest. Reasonable grounds for refusal might include:
- The proposed subtenant is a person the landlord could reasonably object to (e.g., someone with a history of property damage)
- The subletting would breach a mortgage condition or head lease
- The proposed subletting rent is materially higher than the main tenant's rent (in some jurisdictions this triggers rent control concerns)
Always ask in writing: Even if you think your landlord will refuse, always make your subletting request in writing. If the landlord refuses unreasonably, your written request creates a paper trail for any subsequent dispute.
UK Rules on Subletting
In England and Wales, section 19 of the Landlord and Tenant Act 1927 implies "consent not to be unreasonably withheld" into any qualified restriction on subletting — even if the lease does not explicitly say this. An absolute prohibition, however, means what it says and cannot be overridden. For assured shorthold tenancies under a head lease (e.g., leaseholder subletting their flat), the freeholder's consent may also be required.
US Rules on Subletting
US subletting rules vary significantly by state. New York City has some of the strongest subletting rights: rent-stabilised tenants have a statutory right to sublet under Real Property Law § 226-b, and landlords can only refuse on limited grounds. In California, most leases can restrict subletting, but some courts have found that blanket subletting bans in long-term leases may be void as an unreasonable restraint on alienation. In most other states, if the lease says no subletting without consent, and the landlord refuses, the tenant has no recourse unless the refusal is in bad faith.
Short-Term Letting (Airbnb) and Subletting Clauses
Most subletting clauses were written long before platforms like Airbnb existed, but courts and tribunals have generally treated short-term subletting through platforms as subletting or parting with possession for the purposes of standard lease clauses. Even if your lease does not explicitly mention Airbnb, hosting paying guests is likely to constitute subletting and to require your landlord's consent (if a qualified restriction) or to be prohibited outright (if an absolute prohibition). Local short-term letting regulations may also apply independently of your lease.
Risk of eviction: Unauthorised subletting (including Airbnb) is one of the most common grounds on which UK landlords successfully obtain possession orders. Do not sublet — even for a single night — without reading your lease and, if in doubt, getting written consent first.
Subletting vs Taking in a Lodger
There is an important distinction between subletting your entire property (leaving and renting the whole unit to a subtenant) and taking in a lodger (renting a room while remaining resident). In the UK, taking in a lodger in your own home is generally permitted under common law even if the lease restricts subletting — subletting typically refers to granting exclusive possession of the whole or a separate part of the premises. However, if your lease specifically mentions "lodgers" or restricts "parting with possession of any part," then even taking in a lodger requires consent.
Check your lease's subletting restrictions
LeaseScan identifies subletting clauses in your agreement, classifies whether they are absolute or qualified, and flags any unusual conditions or risks.
Scan My Lease →Disclaimer: This article is for informational purposes only. Subletting law varies by jurisdiction and the specific wording of your lease. Consult a qualified solicitor or attorney before subletting.