Data collectors will record such items as the type of interior wall construction, the number of bathrooms, type of heat, central air conditioning, size, and the percentage of finished attic and/or basement areas, in ground pools and number of fireplaces. The exterior inspection includes measurements of each structure, such as garages or other accessory buildings, determination of story height, roof structure, and type of foundation and exterior wall construction. The physical condition of the structure is noted to establish depreciation factors. All factors relative to market value are considered. Examples of what would not be noted would be interior decorations, fences, window air conditioners, gas grills, and lawn furniture.