Laundry room - Getting started

It is time to move the washing machine next to the dryer. Currently our washing machine is upstairs on the main floor in the kitchen and our dryer is in the basement. The previous owners had it this way and I have no idea why. There were only dryer hookups in the basement and only washer hookups in the kitchen. Just ridiculous. Before we can bring in the plumbing and electrical we started by creating some walls we can run everything in. The exterior walls I also plan on insulating and reinforcing for earthquake protection. We started just behind where the washer will go and will work our way from there. My goal in the next couple of weeks is to at least rough in the hookups for the washer so we can get it into the basement. You can see all the photos here.