Hello everyone and thank you for the help. We are building a home slowly over the next year or so while we live in an RV. In order to get a credit towards the cost to run power, we must have a slab and rough-in plumbing done before getting electricity. I have done plumbing work in the past and feel that I am capable...with a good plan. The plan is what I am reaching for help on. I would even pay for the design work if that is an option. Basically we've got a 1 story, 2 baths that are back-to-back, a kitchen and laundry room near each other as seen in the attached floor plan. Septic on one side and the well water on the other. We would like to use pex piping. I am unsure of what portions should be concreted into the slab or under, general layout efficiency, etc. Would anyone be available to design a layout for my rough-in plumbing? For hire even? Thank you so much for any help!