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About your property

Information for Leaseholders regarding heating and hot water, pest infestation, buildings insurance and subletting your home.

Published on: 8 January 2021

Last updated: 17 May 2023

Sublet your home

Subletting takes place when a leaseholder rents their home out to another person. Under the terms of our leases, leaseholders are not allowed to short-let their property for a period of less than 90 days. 

Under the terms of your lease, your property can only be used as a single private flat for residential purposes only.

How to register a sublet

You can now register online using our registering a sublet/tenancy agreement form.

You can also register via email or post using the following details within 21 days of the arrangement starting and pay a registration fee of £30.

  • a certified copy of the tenancy agreement with the subtenant
  • an alternative postal address so that the accounts and any other formal notices can be sent directly to you  
  • a copy of the gas safety certificate for the property
  • a contact number for you, and your managing agent if you have one, in case of an emergency
  • a valid copy of Electrical Installation Condition Reports (EICR) for the property.

Please send the above information via email to [email protected] or by post to

Leasehold Operations
137 Lupus Street

Note: Renewing an existing tenancy agreement with your subtenant does not require another registration fee. We only require a certified copy of the renewal of the tenancy.

How can I pay the fee of £30 to register my sublet?

You can pay your £30 sublet fee using one of the below methods. Please note that it is important to use the relevant reference number to ensure that your payment is allocated to the correct account. The correct reference number to pay this fee will be the 10 digit number for your service charge account that begins with 800, however, the 9th digit of this should be changed from a 0 to a 1.

Pay online

Payments can be made securely online with a payment reference number and bank card. Payments made before 6pm on a working day will normally show on the account the following working day. Please note that the reference number to pay your sublet fee will be the 10 digit 800 number for your property but the 9th digit should be changed to a 1.

Pay over the telephone

Payments can be made at any time by using our automated voice response system on 020 7823 2601.

By bank transfer

Account Name: ‘City of Westminster’ 
Account Number: 00250821 
Sort Code:  30-00-00 
Reference: Please see above.

Points to note

It is important to understand your legal obligations as a landlord. You will be responsible for your subtenant's conduct. Please ensure your tenancy agreement includes the same rules and regulations that apply to you as the leaseholder.

When subletting, you should be aware of your tenant’s rights and responsibilities. and your legal obligations for servicing gas appliances and arranging Legionella tests.

If the property is sublet to a company, registered social landlord or other such organisation, then their subsequent sublet will be a further letting. This must also be registered, with payment of a further fee of £30 and a certified copy of that agreement.

If you are unsure about the above, please contact us on [email protected] or call 0800 358 3783.