If you wish to move out of your home and let it to tenants you will need to ask your lender for permission.
This permission is known as a consent to let.
Consent to let is a formal agreement between you and your mortgage lender, that grants you permission to temporarily rent out your home. Not all lenders will offer this facility.
You will need to complete a consent to let application and your mortgage account must be up to date with a good payment history. However, lenders will not always grant a request to let.
If they do: They will normally increase the interest rate charged and consent will be limited to 12-24 months
If they don’t: You will need to consider a buy to let remortgage.