A basement is a space located below the main floor of a building, often used for storage, utilities, or additional living areas. It is typically accessed by stairs and can be partially or fully underground. Basements can help with insulation and energy efficiency, as they maintain a more stable temperature compared to above-ground spaces. Many homes have basements that serve various purposes, such as a laundry room, home gym, or playroom. In some cases, basements are finished to create extra living space, while others remain unfinished for storage. Proper ventilation and waterproofing are important to prevent moisture issues in basements.