Yep, good points. I want to avoid looking industrial if possible. If I cannot, then I will go whole-hog and have pipe bridges. However, in the design layout I am working on, all plumbing will be very short runs as the bathroom and kitchen are in adjacent rooms separated by a wooden partition wall and the services will come under the floor and up the inside of the wood frame or in the case of kitchen units, behind the kitchen unit. An gas califont water heater will be placed on the exterior wall adjacent to the kitchen and bathroom.
Wiring will be interesting. Currently working on what I need for that.
Thinking about placing floor to ceiling shelving units for storage in strategic places so if I combine this concept with conduit placement...
I may have a means of making it look less industrial... [biggrin] There are apparently wire chases incorporated into the SIPs wall panels so if I can predetermine placement, I can use these but that means I need to be more organised...

