It is difficult to evaluate a floor plan without knowing how the site is designed and where the house will set on the site plan; not to mention when walls are shown as 1/4" thick. Provide a site plan and have the plans drawn to scale with 3 1/2" studs for interior walls and 5 1/2" studs for exterior walls. After that is done the comments will be more meaningful.

A covered porch on the north side is going to make the kitchen really dark....I would not have a walk-in closet in the mud room, children just dump and run, bench, hooks, and cubbies in that closet space instead. I would put the door to the powder room in the mud room space, just so there is less tracking of mud further into the house. It’s a good start. Mark is right, walls take up an annoying amount of space, but including the 4” is important.

Re the closet by the garage, if you have cubbies or hooks on the right-hand wall, the wall-in closet is good for sports gear and outdoor games, and for out-of-season winter wear.

Yes, there would be lockers on the R-side wall. Thanks for the comments and Mark, I agree that the house and site plan is needed...not to mention proper walls! I did try to do that on a floor plan app but it didn’t work very well (I’ll blame it on the app and not me, haha). I guess I just wanted some feedback on the general flow for now. Thanks everyone!

Have you considered suggesting to your family that they work with an architect to create a plan that will work for them? Wouldn't it be best for them to create a list of their must haves, wants, needs, and wouldn't it be nice to haves, along with an idea book of what styles they like and present that to an expert who can with their direction make their wishes come true?

I like it. But if no prep sink on island, the main sink and cooktop need to switch. Also I’d try to get the closets in between the two bedrooms.

Yes, I did suggest an architect, especially since their sloping lot will be challenging, and from this site I have seen the value of working with the proper professional.