Will your kitchen be connected to the rear entry room? I have having a little difficulty seeing there, but it appears there is potential for that connection (except there is a wall)? I would suggest connecting them for easier access to the kitchen from the garage and your storage room.

Also, I think I would consider flip-flopping the stairs and entry. As it is, house guests will walk into a hallway that terminates in a wall. And, with the coat closet placement, really makes this entry feel enclosed and, uninviting?. If you can switch them around, you can close in the bedroom portion of your plan and have the entry more open to the living portion of your plan. I think it might feel more inviting.

I'm never crazy about having to walk through a bathroom to get to a closet, as is the case with your master. Where will your water heater be? I think I might consider making your master closet a walkthough closet (or double reachins) to the bathroom in back.

Kirkhall
My apologies. I know that the plan is difficult to see. There is a connection between the kitchen and the rear entry. What looks like a wall is supposed to denote an archway.
I like your idea of flip- flopping the stairs and the entry. I think you may be right about it being more inviting.
I also understand what you saying about the master closet. Originally, on this plan the bathroom and closet were flip-flopped making the closet a walk thru double reach in as you have suggested. However, I got to thinking that a room might be more practical where I could use the back wall for shelving or something. I may need to reconsider this however, as you are not the first person to suggest the walk thru (double reach in) as preferable. I suppose it might get tiresome always walking thru the bathroom to access the closet. Thanks for your comments Kirkhall.

Is there a particular reason to have a full bath on the hall instead of a powder room? If you do not need that tub/shower, you could use the space to make a small vesibule where the master tub is now with access to the bath and closet from there. Our current house is set up in a similar fashion with a 3 x 3 area off the master with one wall being entrance to our closet, one wall with linen closet (deep enough for hampers) and one wall with door to bath. I am always going between the closet and bath, so I don't think it would be a pain to walk through the bath to get to closet (I am designing our new house this way). But the vestibule idea may solve it altogether. Also, if your master closet and storage laundry area back up to one another, I would make sure there was a way to pass laundry through from one room to another - hampers that roll under the counter and into the closet, laundry drop doors so you could do a very short laundry chute of sorts, etc. If it is just you guys 99% of the laundry will originate in your closet. So you would want a way to pass dirty laundry through and pass clean laundry back easily. Perhaps there is some way to do a "walk-through" linen closet of the vestibule that would go to the laundry room. Then sheets and towels would be easily managed, too.

I agree with kirkhall on the entry. You will end up with a ton of room under that stair for the closet and can combine uses with the coat closet as drawn.

When you are designing bannisters for your stairs, you may want to make sure you use some design that will accomodate a spring loaded baby-gate so you don't have to install something more permanent. You didn't mention grandkids, but with four kids, they are certain to come. :)

Best of luck!

The biggest thing I see is the utility room/storage room I can't see what kind of construction it is. If your planing on 2x4 studs upgrade to 2x6. If a washer and drier will be in there running you don't want it to destrube you while you relaxe in the tube. Also the wall that seperates the master bedroom from the rest o the house so noises of hiuse guest wont bother you as much. Also note alittle insulation also helps for sound damping. It may not be that important but down the road it may be useful.