In a relatively short time frame, I plan to redo the master bath and the kitchen in my old house.
For the bath, I'm thinking shower, no tub, and maybe swapping where the toilet and the sink are. A largish old dresser where there are currently two long built-in shelves.
Kitchen: gas and water need to stay where they are. There's a small island that's really in the way, except that it holds the dishwasher. I want to pull the island out, and may go with dishwasher under the sink or portable.
The water pipes are mostly that old hard plastic. I've had two leaks that I caught early, but the writing is on the wall.
What order might be best for those jobs? Does it even matter? The rehabs may or may not be done by the same people. I hope to have the plumbing replaced by the guy who put in my water heater. He doesn't do rehab.
Demo, plumbing, electric, walls, paint, flooring, cabinets and tile, finish work. I don't think a dishwasher will fit under sink with plumbing there. Maybe the new drawer dishwashers. I would not go portable unless there just is no room. I would rather have smaller sink, with a dishwasher, than portable, always a good chance of a leak, either temp plumbing or drain leak, so unhandy, hose popping out, etc. L shaped kitchen? maybe? an island at a 45 degree angle. We had one in our house in town, compact yet good work space, island cabinet was only 15" deep had a 9" overhang on the back for a 24" wide eating counter with 2-3 barstools. Lots of storage. Good use of space. Bigger groups we used the island as a serving table, Smaller table, get more people at the table without all the food trays and platters....James
Put in new Pex pipe back as far back as is practical. New P-traps, all new in-room drain piping. Roll in shower. Tapered bed shower, orange waffle mat, bedded tile with surround all the way to ceiling. In our new cottage, the whole bathroom will be a "wet room" with drain....James
The kitchen has 3 doorways and two windows. My brother said he'd close a window to get wall space, but it's already not that bright in there. The island is too close to both sink and stove. Can't open the diswasher and the stove at the same time... Dad said the original kitchen was in the front cellar. There have been other internal changes, though never have quite worked out what. Don't know if the bathroom was added. House built @1875.
The bathroom is above the front door, cantilevered over the staircase. Design changes need to take into account total weight. Nothing like your new one would ever work, though in your style building, certainly makes sense.