Included: I will do a few windows each visit. Usually the main windows, such as over a sink or a sliding glass door or two.
Seperate Job: All windows in and out that can be reached with my 18 foot extension ladder, the screens*, and the tracks of sliding doors. I drape the floors with towels and place my window bucket on a towel too.
* I only clean screens that are in good condition. Screens that have spent years in the sun are not usually cleanable

Clean windows tell your customers that you care. It's the first thing they see beofre they even enter your business. Nothing worse than and restaurant that has unclean windows and mirrors. How about the dentist's, the coffee shop's, the DVD rental store's or even the car repair center's windows, that are so dusty and or spotty that you can't see in or out? Not very inviting.

Business Windows: I love cleaning the windows of retail storefronts. Restaurants, barber shops, dental and medical offices and other general retail. It can be weekly, every other week or monthly. Sorry but I don't do multi storied business buildings.