An electrical distribution board is part of the installation where circuits are distributed and protected. Its appropriate arrangement depends on the whole installation and intended use. Visible spare space does not independently establish which additions are possible.
How this term relates to your project
A new kitchen or extension may require different appliances and connection points. Gather available records and have a competent installer assess the situation. An equipment list helps, but product specifications and existing connections may require further information. Identify provisional selections.
Do not carry out electrical work from general information on this website. Ask the quotation to describe alterations, checks and handover documentation. Clear identification and an updated installation description support later operation and maintenance without expecting a homeowner to assess technical suitability. Keep these records with the final services plan so future work does not rely on an obsolete room layout or equipment list.