Hi, I am new to the forum, but saw your post and wanted to let you know that we searched all over and found Sunshine Greenhouses, built in Longview, WA. Ours is 4 years old, and we love it. We choose wood as it is better insulated for our cold climate here in the Columbia River Gorge so heat loss is minimal, easy to maintain, simple assembly, and does not get cold and sweat like metal or plastic framed greenhouses. Also, the cedar frame feels so cozy, especially sitting by the realistic electric fireplace, and it fits right into our rustic raised bed garden setting, too. Let me know if you need more information. I am developing a hosta display garden and now have 140+ varieties. Small by comparison to many collectors, but more hostas come to live here all the time.
More photos of our greenhouses and gardens at http://www.quinnmountain.com