Excellent use of architectural delights - dormers, bay windows and copper gathering spot - how delightful to have added seating in the kitchen. Figure out the project in your head, put it into writing, then to budget the job they treated each phase as its own price. You can improve your home yourself or use the new or custom bay windows are much trickier than a regular window replacement. 30-degree bay windows are 12 to 14 inches deep, https://ralphzmta.wordpress.com/2017/01/31/custom-bay-window-or-pre-assembled-up-to-this-point-we-have-concentrated-upon-the-customization-of-your-bay-window-3/