During a BER assessment, a registered BER assessor will visit your home and will need access to all areas, including the attic, hot press, ventilation systems, windows and doors, lighting, meter cupboards, and heating systems and controls. The assessor will conduct a thorough inspection and survey of your property, taking measurements, noting the types and condition of various elements (e.g., heating system, insulation, windows), and may also take photographic evidence. The process usually takes between 30 minutes to one hour and a half, depending on the size and complexity of your home. The assessor will gather information on aspects such as the year the property was built, insulation levels, heating and hot water systems, ventilation, and any renewable energy technologies.