You've obviously put a whole lot of thought into your floorplan and how to make it meet the needs of your family. I like it a whole lot but I do have a few questions and concerns. Not sure what you mean by "maximize light coming in from the bathroom off the mudroom." Are you wanting light from that bathroom window to spill into the mudroom and provide natural light there? If so, I don't think there is anyway to get very much light to spill over and still give the bathroom the necessary privacy, You CAN put an interior transom windows up over the bathroom door which will allow some light spillover. And, you could use a frosted glass door for the bathroom door. I'm not a fan of the latter except in masterbedrooms where there is less need for a total "sense" of privacy. You might also consider putting in a light tube to bring natural light into the mudroom. I have another concern about the bathroom by the mudroom tho. Not sure if that is a shower or a dog-shower or a utility sink in the lower right hand corner but with it there, you have no space in front of the vanity sink to stand while washing hands. What is that room between the staircase and the office? I can't read what is says and, at first, assumed it was your pantry but then I found the pantry down next to the dining room. I agree that a larger pantry would be nice. As your kids get older, you're going to have bikes and other sports equipment to store in the garage. It would be nice to have room for the second freezer inside the house so that the garage space could be dedicated to that other stuff. The hallway on the children's side may be too narrow to easily move furniture into their bedrooms. There is an indication that it is 3'4" wide (which would be plenty wide) but based on the grid background, it looks like the wall to wall width may only be about 2'8". Does the 3'4" measurement include the 4" deep walls on both sides? If the actual wall-to-wall hall width isn't at least 3'0", you might want to consider bumping the left exterior wall out another couple of inches. Given the overall size of the house, a few more inches won't make a noticeable difference in the cost to build. But a too narrow hallway will bug you forever! To maintain exterior symmetry, you would probably also want to bump out the exterior wall on the garage/masterbedroom side of the house as well. But, a few extra inches on that side could be useful as well. The only thing about the design that I really really don't like is the powderroom that opens directly into the living room. Guests will be squemish about using a PR that is so centrally located...too much concern that others will hear them as they go about their business or, even worse, if their business tends to create a bit of a stink, the smell will waft out into the living room before the bathroom vent fan can take care of it. And, do you really want to be looking at a toilet when your babies leave the bathroom door open while there are guests in the house. IMHO, that bathroom REALLY needs to be moved to a location further from the center of activity. The closet for bedroom III seems a bit small - especially for a girl who will eventually get to be a teenager! Also, be aware that your dryer needs to vent to the outside. It is easiest to vent a dryer that is on or very near an exterior wall. Given the location of your laundry room, I've linked below to some info that you should probably read regarding venting a clothes dryer. Just a thought but, have you tried putting the playroom in the middle of the left wing then having two short halls leading off of it with two bedrooms at the front, and two bedrooms and the laundry room at the back? And the guest powderroom tucked in to the left of the study so that one must go down a short hallway from the living room to reach it? this is really really rough but may give you some ideas Here is a link that might be useful: dryer vent info.

Just my opinion, but I would worry less about aesthetic properties, and plan for security. One can‘t go by age because joints can go at anytime. If you don‘t use something ADA compliant, you could end up falling holding on to the “available” bar. Something that works one year may not be adequate for the next year. We used metal wall anchors for our grab bars because I wanted the ”big girl” strength variety. If you are rennovating, plan on now to make it handicap friendly. Your love ones may need assistance before you do when they visit. You might check with your workforce commission, vocational rehab, or whatever they call themselves now if you still work and need support services. Before I retired I wanted an egronomic chair to work for the state from home. What I didn't know was they had money to get me an office chair, work desk, foot rest, desk lamp, ramp outside the house, grab bars near the toliet, and made a roll in shower with grab bars. At the time I was using a cane. My husband became disabled also, so this worked out for both of us. I like my home nice too. I just incorporate what I need to also be safe.

I don't remember which company makes this TP holder which also functions as a grab bar. It is extremely sturdy even though only 1 side is into a stud as it was an existing wall. These come with a special anchor which is installed through the wall similar to a butterfly but sturdier. My 87 year old father thought this design was the best TP holder he had ever seen. He liked the grab bar but really was impressed by the pivot which means you can change the roll without any pieces falling on the floor and rolling away. Cleaning and maintenance is another aspect of aging which is often considered secondary to the use of the bathroom. But, not everyone is ready or able to hire help to take care of small tasks like changing TP but those need to be done as well. Hanging towels, picking up the bath mat, carrying towels to and from the laundry are all tough if you are hobbling on one foot or pushing a walker

I would absolutely want grab bars attached to the studs. Also I might even want additional grab bars installed so that they are accessible wherever one is in the shower including accessible when one is entering and exiting to help with balance. The reason why you want them attached to the studs is that they are there for a worst case scenario when someone has literally lost complete balance and is dead weight on the bar. Not having them in the studs might be find when they are used to assist a bit or to steady someone but there could be complete failure when they are being grabbed - especially if someone is larger/weighs more.