So your drawing and the pictures IMO have no realtion to each other and the drawing needs to be to scale showing all windows and doorways I honestly think the space is not very big for a laundry and a mud room.

Measurements would be helpful. Are you trying to say that the red line is just a wall and there will be no door on the laundry/mudroom? I would want a door, doing laundry is a loud business.:-) I would add a pocket door if spacing is an issue and add a transom overhead if you are concerned about light in the hallway.

So the new laundry room is approx. 10'6" long. How wide is it?

Would want at least one exterior window in each space but would create only a laundry closet rather than a laundry room, putting the washer and dryer (for dryer venting) against the outside wall and have the hall "wall" to this space NOT actually be full wall with a door that takes up space to swing into a room but only be a set of bi-fold closet doors leading to your laundry closet. That way, you could park a rolling table/cart in the laundry closet in front of the washer and dryer when they're not in use that could serve as a movable folding table with storage beneath it.

Make the wall between laundry and bath be thick/deep enough to have it be floor-to-ceiling storage, with part of the storage opening toward the laundry closet and part of the storage opening toward the bath/powder room -- ironing board and laundry storage on the laundry closet side and bath related storage on the bath side.

By putting storage in the wall (as well as above the dryer (on the wall beside the window), you can make this laundry closet smaller (but still practical ) and make your bath larger.

Ci_lantro. The room is actually 8’ wide (to the 42” wall end) and 10’ wide with the large opening including the entrance area/hallway

Mod pod. The red line is the area where there is no wall.

Needs a door, how about a glass paned one? that would let the light into the hall yet still hide the laundry.

We also are considering pony walls in the 7 1/2’ x 11’ space. Thoughts on coat broom closet on one end of room and washer dryer on other end? Washer /dryer closed off with bi fold doors or left open?

We put brown paper where the washer and dryer are going. My husband is going to build pedestals for them to sit on which will make the tops of them be about 50” up from floor. Any ideas on the pedestal and can shelves go above the units and beside them? The empty space shown on left will be 18” wide.
Does it matter if units are white or gray?

Husband built a pedestal for W/D with drawers. We laid tile at entrance and added new light fixtures in hallway and laundry room.

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Bright, airy, open. Looking good!

Thank you😊. We took out two small closets and part of a small bedroom (now the laundry area. Filled in a doorway and window. Extended the hallway by about 7’.