Local listing is a concept that is designed to ensure that the historic and architectural interest of buildings that are of local importance but do not meet the criteria for being nationally listed is taken account of during the planning process.
In England and Wales, local authorities are responsible for drawing up local lists of buildings that they consider to be of local importance. There is no obligation on councils to have such lists, or to update them regularly when they have them. It is thought that around half of councils have local lists.
Locally-listable buildings are those that do not quite meet the criteria for being nationally-listed, but which are still of architectural or historical importance in their local area. Councils have their own precise criteria.
Locally listed buildings do not enjoy the levels of statutory protection afforded to nationally-listed buildings. However, local listing means that the interest of the building will be at least considered during the planning process. The effect of an application on a non-designated heritage asset is a material consideration when deciding planning applications, and local listing strengthens the case for retention of a historic building.
The conservation and planning pages of your council's website are the first place to look; many councils have local lists online. Otherwise planning or conservation officers will be able to tell you whether or not your council has a local list, and how it can be viewed.
Contact the conservation officer at your local council for details of how to do this.