Every window in the greenhouse is salvaged. The rows of windows on the broad side were a free score on craigslist. The doors were street finds, and most of the cobbled-together gable sides are made from windows we found at local salvage shops, or made from sheets of recycles plastic.
The foundation was dug and laid by hand
Careful siting gave us the full benefit of all the available sunlight.
Shelves were built along the broad walls for working, and for all of the little seedlings which will live inside the greenhouse for their first weeks. The back deck brings you into the garden and offers a sunny place to sit.
Here's a video cataloging the building process: