I like Rococogurls suggestions. There could be an island in the center for crafts, sewing, etc. too. Though, that may not suit your needs. The kitchen though, have you considered having the kitchen forum look at your plan. There are some real experts over there. The reason, is that I see some things that look like they might need rearranging for more efficiency. I am not a kitchen layout expert, but over on the kitchen forum there are experts, and very kind and helpful experts. For instance the location of the stove, between the sink and the frig, is possibly awkward. Back to the laundry room. You'll need room to store supplies, and more. You will need hanging space to dry items. You'll need a counter for folding. You'll need easy access for the dryer vent to clean periodically. You'll need access to quick shut off of water in case of leaks, or when leaving for vacation. Any cabinetry at the machine area, needs to allow for machine maintenance and pulling out the units for repairs. It looks like your current plan locates the set against an interior wall. How will the dryer be vented? It would be better to locate the dryer against an exterior wall for the shorted ducting you can get. Dryer vent spec installation varies between brands. The manual will spec length of run that is desired. If it is too long of a run, then an inline exhaust dryer fan is recommended, I believe. When there is a 90degree bend, that = 5' of your allowed run. So you can't put in very many elbows before you use up all your length. My machine is 8' away from my exterior wall over the basement, where the duct runs between the joist. Because of all the bends to get it 4' down into the floor, then out the exterior wall 8' away, I used up 33' feet in the equation. The vent on the outside of the wall = 10' of ducting I believe. I could be off on some of these numbers, but it needs to be considered when locating a dryer. Depending on your exterior, you could put them under the window in the upper right 45 degree angled wall. But you don't want the dryer vented onto a gathering area, like a patio, cause lint will blow out. It's best to have the front loaders against a load bearing wall too. When machines are placed on joist flooring system, they need to be near the end of the joist. Otherwise there is tendency to bounce the floor. Unless you are on a slab of concrete, that is ideal, and the machines can go anywhere. The machines need to be able to be absolutely level once installed.

I personally like porcelain tile for floors like a mud room or laundry room. Porcelain is strong and in many beautiful colors. Luxury vinyl tile would work too and there are many looks for that too. I would not use wood or natural stone. Wood because of abrasion from dirty feet, and stone because you need to be sure the joist system is strong enough, might be an issue with your new build specs. Floor joist have to be rigid for porcelain too but not has stiff as with stone. I think brick will have to be dusted and collect dust easily. Just my opinion. I have seen brick tile for floors that might work for the wall. Sunderland's has them I think.

It looks like you prefer to have the right tool for the job, so you have lots of tools. :) I think that your storage pieces (hooks, wall hanger, etc...) are too small for the things they are holding. See if you can find a way to increase the space between hooks, get a larger rack for next to the light switch so that the things on the rack are inside the rack and not spilling over. Do you use those cabinets for storage or for things you use frequently? You shouldn't stress over this, I can see you have a baby and that means lots of work. But if you are in the mood to decorate as well as rearrange, try to add your favorite color, maybe in a way that defines an area for coats, an area for detergent storage, etc...And get hooks that are identical, maybe in the favorite color.

The owner's retreat is the master bedroom and it was designed for the door to enter from the mudroom because my husband is a truck driver who works odd/opposite hours as me. The laundry room aslo has a door that goes into the master closet which connects to the master bedroom so we don't have to wake each other as we're coming and going. This also allows me to keep dirty/greasy clothes in a limited area of the house. We live on 5 acres of farmland so it's easier to limit the dirt to one area this way. I am considering a small bench next to the washer and dryer for sitting down to take off shoes, it is a 4ft space so does that seem sufficient for 2 people? This is the full house plan, however we did not do the optional drop zone because it seemed smaller than the 4ft area being left in the laundry room.