It seems we have similar requirements for our Mudroom and office. Our office is plenty big at 9x9. The big window is key which you already have. We also have a powder room, 8' of lockers, a separate bench with magetic blackboard over it, a second fridge, a 4' coat closet, and access to the kitchen, garage and rear covered patio. In addition, we have a 9' utility closet for the vacuum, mop, batteries, charging station for camera, wrapping paper. I would carve out some space from the office and create additional closet space.

Personal preference would be to flip the door from the garage into the drop zone. Right now you have to have the door closed or reach behind it to get to the drop zone.

Also, since you have the space, I would make the coat closet deeper. When you start putting in puffy coats, etc. I find it's nicer to have a few spare inches so you aren't fighting to keep the door closed.

I really like what you have already drawn & it seems to meet the criteria you've set. What is it you don't like about it other than the office being on the large size?

Most of my dissatisfaction comes from the cubbies being front and center - able to be seen from the kitchen and family room. The floor plan is very open and I don't want to see the "mess" that will inevitably be the mudroom from all the other areas of the house. Thanks for your thoughts. My husband loves the idea of creating a walk-in coat closet large enough for his hunting gear. We may do that with the extra office space.

Oh wow! Thanks for posting your mudroom design with the 3/4 bath and office. I want the same thing but couldn't find anything to compare what was in my head to something I could find online to put in my notes. EVERY single plan I see is the office is connected to the bathroom and it's usually a half bath and the exterior door is so far from the mudroom that I couldn't see why there was a mudroom to begin with. I also want a door in between the living areas and the mudroom area so it can be closed off. I know how my 3 older boys are. I also have a 4th boy who is still a baby, so it will get it's fair use. I would also rework the door to open to the freezer rather than toward the drop zone. In our house we want the garage, mudroom and office at the back of the house since I like a plan that features a symmetrical front elevation. Of course, I like balance in everything. LOL

I also would reverse the door swing from garage to your drop zone. You want to be able to drop on your drop zone.

Where is your kitchen? I am having difficulty with the upside-down partial drawing... I was thinking the cubbies were obscured with doors/etc. Will you be able to really see the cubbies from the kitchen if the doors are closed, not open?

Found your kitchen...

I think you could do 2 things. Just extend the wall a smidge so that it blocks the cubbies (hopefully everything is IN the cubby, and not on the floor--you won't see them, the are set pretty far back, but a little wall extension will help that and with 5 feet of hall space, you can give up a foot without too much difficulty).

Or, you can add a door--I'd probably do a pocket door. You can put this door on either side of the stair base (in the wall to the kitchen, or in the wall of staircase).

Does that make sense? Really, with their orientation and the hope that stuff is put IN the cubbies and not infront of the cubbies, it will be fine.

I have worked on the mudroom and office area. Let me know what you think. This solves the "seeing the cubbies" problem and the cubbies will likely be more convenient for the kids as we come in from the garage. You guys are great! Thanks for all of your feedback - and sorry about the upside down drawing. :)

Could you just add a door (or pocket door) to the kitchen to close off that area?

I am concerned about the size of your drop area, and that now that IS within full sight of the kitchen (and not shielded by any part of a wall). How will you use your drop area?

Also, your bathroom shower seems very small (even if rarely used), and the closet that winds behind it may not be that functional. What is "RA" and what utility items will you put in the utility/coat closet?