Very nice build Martyn L!!
I'm super excited to start my build, closed on the house about three weeks ago, just finished the interior painting, walls, ceiling, floor and enlarger cove.
It's a bit over 450 square feet of usable space, ceilings are 8' foot 7" and the enlarger cove is about 14' feet wide so it will have an LPL4550 XLG on the left and right side, right side will be wall mounted with custom drop table and in the center will be an easily stowed wall mounted / horizontally oriented geared 4x5 camera converted to a mural enlarger. I have 15 feet of stainless steel sinks going in the wet side along a 33' foot wall but it will all be knit together to form about 22' feet of wet workflow area for a specially designed mural paper processing system. I am adding grey-blue vinyl baseboard this weekend, painting the can light trims "Jobo Red", might stencil sprocket holes along the edge of the grey paint for a fun effect.
Lots of things to do, plumbing re-route, drain, silver recovery, ventilation....
It's taken 12 years this month to get here, but finally, this next chapter of my career gets to be fully realized.