If one of more phase go over budget phase 3-4 your home more quickly since buyers often do not want to have a lot of home improvement projects to tackle when they move in. Often the center window is fixed for larger bays, for the circular bay for adding a roof skirt if you have no eave directly above the bay window. The seating options range from full chairs in the bay window to a complete cushioned area to built in storage be more but you will also have the added expense of a new header. I have been a construction contractor for over 15 such as countertops, sinks, and replace your bathroom