How do I determine if a building’s structure is wood frame or masonry?

The easiest way to determine if the building is constructed of a wood frame or masonry is to look at the profile of the building at the exterior wall’s window or door frame. A wide profile increases the chances of it being masonry. Additionally, inspectors may choose to look at unfinished areas. Note that older solid masonry buildings can have four to six horizontal bricks and then a rotating soldier row connecting the rows.