Building work on a listed building or altering its use without the requisite approval can result in court action and legal fines. It is also criminal to ignore an enforcement notification. As a result, I strongly advise you to employ a planning expert to work on your behalf. They will be able to provide advice about whether your project requires development consent and if so what type, and they can also help with the application process. Listed buildings are automatically protected under UK law. This means that any changes to their exterior design or interior layout require official permission from planners and the government department in charge of protecting buildings of national importance. These include museums, galleries, libraries, archaeological sites, and industrial heritage sites. Listed status also applies to buildings used for residential purposes provided they meet certain criteria (for example, they must have at least five bedrooms). It is an offence to carry out development work without first obtaining the necessary permissions. There are several ways in which this can happen including but not limited to: planning applications being submitted without consulting the owner/occupier of the property; builders entering land without permission; and work beginning before consent has been obtained. Penalties for violating listed building regulations include fines up to $100,000 or 10% of the value of the building, whichever is greater. Additionally, the person responsible for the violation may be jailed for six months or both.