KODAK Building a Home Darkroom 11x8.5 inches 96 pages. Discusses design and the “nuts and bolts” of construction including carpentry, electric, plumbing, and HAC. Includes photographs of existing home darkrooms. Excellent reference if you are going to build a darkroom $5
I can give practical confirmation to that. This is the book I used as a starting template to build my current permanent darkroom. Lots of good ideas and considerations available. Especially if your target space is in a basement, as mine was.
"Hate is an adolescent term used to stop discussion with people you disagree with. You can do better than that."
—'blanksy', December 13, 2013