If you have a Listed Building, it is so important to seek professional advice before starting any work.  A popular misconception is that it is only the outside of the property that is Listed.  This is not the case at all.  It is the whole building that is Listed, inside and outside; from windows and doors, to staircases, floors and walls, etc. It is prudent to seek the advice of an architect specialising in Listed Buildings who can liaise with the Conservation Officer on your behalf in order to gain permission for any works that may be required.  Here at Josh Thomas Design House, Listed Buildings are one of our specialities. If you have any queries, please do get in touch.