Until recently, I assumed all bricked-up windows were once real, functioning windows that got, well, bricked up.
While that’s sometimes true, a good portion of the bricked-up windows we see around town were never real. They were designed as blind windows and their purpose was to maintain symmetry in a building’s facade. They’re deceptive since they had all the elements of a real window such as lintels and sills. These were especially common on tenement buildings.
Other times, lot-line windows were bricked up prior to neighboring new construction.