HWC does a number of Basement remodeling jobs each year.
In many cases, Homeowners wish to add a bedroom in the newly finished basement. In order to do this safely - AND to meet most building codes everywhere - there must be an emergency escape route in the sleeping quarters.
Most often, this is accomplished with an egress window. Building codes are very specific and care must be taken that every egress window is constructed to meet the specifications of the local building code.