We just got bids on a full house replacement in the DC area. The
windows vary in size, but to give you an idea, we're talking about 15
windows, a sliding door, and a bay window about 10 feet across. Total
cost for a vinyl company with a good reputation was about $12K. Total
cost from Marvin was about $25K. Andersen was more like $22-$23.
That's for *wood* windows with vinyl cladding (aluminum cladding for
Marvin). The sliding door will typically run 1500-2000. The bay
window is 3-4K installed. It sounds like you're looking for a round
number to help you evaluate future costs for the house. I would
budget $15-20K, depending on whether you're particular about quality or
Hope that helps.