The process took longer than I expected. There were a couple of contributing factors: the permitting process in Plano and my inclination to get into the planning details of the project. <br /> Planning. Initial contact took place in December, 2013, with a contract signed late January. Based on some things I learned about not needing low-E for North-facing windows, an addendum was executed in early March that also including a few other tweaks I wanted. The Sunshine salesperson, Jim, was very accommodating in incorporating the changes I wanted as we went along. I have been told by different vendors that permitting in Plano has a reputation for being slow and involved. This project was no exception. Early on, based on our house foundation, I was required to get an engineering letter ($350) to okay the project. <br /> Construction. Preparing for and pouring/finishing the concrete foundation went smoothly. The only hitch was the need to remove the fence gate in order to get their mechanized cement hauler -- much faster than wheelbarrows -- into my backyard. Turns out the concrete walk put under the gate rubs it when the gate is fully closed. They did a good job of keeping excess cement and splatter off my lawn and house. The sunroom walls and roof went up quickly, as did the installation of the windows. Due to some of the windows being the wrong size/type, re-ordering and a workaround were needed. That caused some delay. That said, the final solution turned out fine. Shingling the roof also went smoothly, including ensuring shingling on the existing roofline had about an inch overhang to avoid leaks. <br /> Electrical. This work was generally performed with care and clearly the expertise of a master electrician. He showed care in the appearance of his final wiring. However, we did initially fail an electrical inspection due to him not using Arc-fault breakers, a requirement for new construction; that's something the electrician should have known. Again, the final appearance/performance of the electrical installations has been good. <br /> I ended up using a PTAC unit for air conditioning and heating, choosing a GE Zoneline. Sunshine recommended an Amana unit, which is widely used, but in my research, it appeared the GE unit was better. Although I could not find decibel testing on any of the units, we are extremely pleased with how quiet our unit is. (We were expecting something similar to that of some motels we have stayed in where the units are fairly loud; we can barely hear ours.) <br /> All in all, we are very pleased with the finished sunroom. We separately installed indoor/outdoor carpeting, so it presents a bright, comfortable environment. While there were a few glitches along the way, Jim of Sunshine Sunrooms responded to them promptly and professionally. Any project like this may encounter snags, but it's how the company responds that makes all the difference. And this company responded well. <br /> I would definitely recommend the company to a friend. <br />