Our single pane windows from 1952 replaced with wonderful double pane windows. Amy was the one who called me and was so open and scheduled everything. Doors and windows are tricky to replace in old houses and I was concerned! Amy arranged a meeting for me with the owner who was very knowledgeable and he educated us. We did run into some issues with french doors, but it was taken care of no matter how many times it took the crew to pay us a visit. The windows and 2 doors were completed in 2 days! We have a mid century house with 35% windows of all shapes and weird sizes. Very pleased with the result! We did have few more estimates however we realized have we gone with any other company although they were less, but we surely would end up paying more due to change orders. Highly recommend Design Windows & Doors.