My darkroom
My darkroom is about 9 x 15 feet. The photos show the working sections. The dry side includes two enlargers: a LPL 4500 with Super Dichroic head that is used for negatives up to 4 x 5 inches; and, a Zone VI with the 8 x 10 head that I use for 5 x7 (I have the 5x7 head, also), 4 x 10, and 8 x 10 (infrequently) negatives. The darkroom is on the lower level of the house (aka, basement) and the ceiling in the darkroom is less than eight feet, so the bench under the Zone VI enlarger has a drop down top. I used assemble-yourself cabinets from Home Depot, but put them on a platform that raises them up six inches. It makes a much more comfortable working height. The cabinets are deep because I didn't want the easel to hang over the edge. I'm six feet tall, so I don't have a problem with the depth or the height.
The wet side features a 10 foot stainless sink, two thermostatic valves (one for the print and film washers, and one for tempering water for mixing chemistry and other tasks), as well as two standard mixing faucets, all downstream from in-line water filters. The sink is also raised about six inches; otherwise, it would be very uncomfortable to use.
In addition, there is lots of storage, very adequate counter space, satisfactory ventilation, a comfortable rubber mat on the floor, and speakers tied to an adjacent sound system that I can control with a remote from the darkroom. I could almost live in here.