Most leases restrict subletting but the rules vary widely. Here's how to check yours, step by step or with LEASE-iQ.
Information only. Not legal advice. Always take professional advice before acting.
Many leaseholders assume they can rent out their flat as long as they tell the freeholder. In practice, your lease may contain an absolute ban, require written consent, or allow it with conditions. Getting it wrong can put your lease at risk.
Your lease will typically contain one of these approaches: an absolute prohibition, a qualified restriction requiring consentWhere consent is required, the LTA 1927, s.19 means it cannot be unreasonably withheld. But some leases grant the landlord "sole and absolute discretion," which is a different and stronger restriction., a restriction at the landlord's sole discretion, or permitted subletting with notification only. You need to know which applies to you.
Where your lease requires freeholder consent, the Landlord and Tenant Act 1927, s.19LTA 1927, s.19(1). Where a lease contains a qualified covenant against subletting, the landlord's consent cannot be unreasonably withheld. generally means consent cannot be unreasonably withheld. But you still need to apply correctly and in writing.
Subletting without the required consent is a breach of covenant. The ultimate sanction is forfeitureForfeiture allows a landlord to terminate a lease for breach of covenant. Requires a s.146 notice (Law of Property Act 1925) before proceedings can begin. Rare but legally possible., losing your lease entirely, along with your investment.
Even if your lease permits subletting, short-term lets (such as Airbnb) may be separately restricted. In London, planning rules limit short-term lets to 90 nights per yearGreater London Council (General Powers) Act 1973. Properties used beyond 90 nights per calendar year require planning permission from the local council. without permission.
Five steps to understand your subletting position. Do them in order. Or upload your lease and ask LEASE-iQ.
Look for covenants about 'assignment', 'underletting', 'subletting', or 'parting with possession'. These terms may appear in different sections of your lease.
Is it an absolute prohibition (no subletting at all), a qualified restriction (subletting with freeholder consent), or a permitted arrangement (subletting with notice only)? The wording matters.
Some leases set out conditions for consent - such as providing references, limiting the term, or requiring the sublease to mirror the head lease covenants. Check what your lease requires.
Your lease may separately restrict or prohibit short-term lets, holiday lets, or use of platforms like Airbnb. These clauses may be in a different section from the general subletting covenant.
Your mortgage lender may require notification or impose conditions on subletting. Your buildings insurance may also be affected. Check both before proceeding.
⚠️ Important: Subletting without the required consent is a breach of covenant that can lead to forfeiture proceedings. Even if forfeiture is rare in practice, the financial and legal consequences are severe. Always check your lease and seek professional advice before subletting.
Upload your lease. Copy this prompt:
The free LEASE-iQ analysis told you what your lease says about subletting. Now you need to apply properly. Here's how to handle the process, what pushback to expect, and how to get a formal consent request drafted if you need one.
You've used the free analysis to understand your subletting rights. Now let LEASE-iQ draft a formal consent request to your freeholder, referencing the right lease clauses and statutory protections. Ready to send.
Based on your lease analysis, LEASE-iQ will generate:
The Leasehold Advisory Service (LEASE) provides free, independent advice on subletting rights and consent disputes. If your freeholder is refusing consent or imposing unreasonable conditions, LEASE can help you understand your options.
Contact LEASE (free) →Most leasehold flats have subletting restrictions - and getting it wrong can have serious consequences.
The government has proposed a draft Commonhold and Leasehold Reform BillAnnounced January 2026 for pre-legislative scrutiny. Would replace forfeiture with "lease enforcement claims." Not yet introduced to Parliament. The Leasehold and Freehold Reform Act 2024 did not address forfeiture. that would replace forfeiture with a new enforcement process, but this has not yet been legislated.
If you're a director of an RTM, SoF, or management company, unauthorised subletting can affect the whole building - from insurance to communal behaviour. You may need to enforce lease covenants while navigating the legal process carefully.
Are flats being rented out without consent? Short-term lets can be harder to spot. Directors may need to monitor and investigate carefully.
As freeholder or RTM company, you may have the right to require consent applications. Check what powers your lease grants before taking action.
Unauthorised subletting - especially short-term lets - may affect your buildings insurance. Check your policy terms and notify your insurer if needed.
Covenant enforcement can strain neighbour relationships. Document everything, follow proper process, and seek legal advice before escalating.
BLOCK-iQ helps directors track lease covenants, maintain compliance records, and manage building obligations in one place.
See how BLOCK-iQ works →Upload your lease (any age, any format). Ask a question in plain English. Get a clause-cited answer in seconds - not hours of reading.
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