Fred S, thank you. I will verify that and thank you for the snippet -- Architect did have these same dimensions but with a continuous wall vs. partial railing I added. Much appreciated! We may have to scrap the dumbwaiter per the requirements regarding the door and I am ok with that. That toilet will be a wall mount and I'm looking at TOTO which now has a standard 4x4 framing mount (vs. previous 6" wall framing requirement). I did play with an outswing door that could work with the 12' door opening, and aligning looks ok with the metal rail from stair landing to the bathroom wall. The intent was to create some privacy as you enter, but given it's a standard door, there would be a lock -- great input for things to think about. Very many thanks!

Very good point made about learning the outside air requirements for the furnace. Now that I belatedly think about it, there is no way--if that HVAC unit is gas fired, natural gas or propane, no way that it can be allowed in a small space with an exhaust fan and a vented dryer. Obvious reason being that carbon monoxide from the heater getting sucked into the living space. In the latest rendition with the toilet in the space where the W/D was--what is the point of putting the toilet in a closet. Anyone using the toilet can't close the bifold door. Bifold doors are miserable enough when they're closet doors that you operate only once a day...I sure wouldn't want to use them for a toilet enclosure that is used multiple times a day. Another reason to avoid them is that they are pretty flimsy as a rule and prone to having hardware components break and wear out. Why not take the toilet out of the closet, turn it to face the lavatory? Aside from the closet not meeting code and being horrendous to actually use, those walls are eating up floorspace. One other concern...is there enough room to actually get into the shower?

In your case, I would look to something like Barker Cabinets for an RTA cabinet that can be made to the exact specifications you need. I put one together in this link that is 28" (1" filler on each side) by 16" deep. You can buy paint grade or wood. You can choose your door style and have pull out shelves added if you like. You can also customize the height if you want to do a vessel sink. You can order them raw, or painted or stained. I think it's the best options to be able have a semi-custom size to suit your needs. https://www.barkercabinets.com/2-door-SINK-base-cabinet-p/b2dsink.htm

I think giving up the tub makes sense - i would rather have storage. We personally use our tub, and we'd give up the wasted space in "the throne room" ... but since you are rather ambivalent about the tub, this makes sense. does your budget cover moving the toilet? that makes the reno a lot more complicated Yes, moving a vanity /sink or a tub /shower isn't nearly as expensive as moving a toilet. Just don't fall in love with the idea of moving the toilet without looking at cold, hard numbers. My wife also worries the toilet will be right behind the vanity. Right behind the vanity? As in located next to it? That's the most common position for toilets. This is a non-issue. Just a quick thought/draft. Linen Cabinet gives privacy to the throne. shower is 48”*36” with two glass walls. tub has 65”*36”. Hung a mirror on far wall to make the space feel bigger. Enjoy Melissa's sketch is good ... in general, any time you place the toilet and vanity on the same side /the tub and shower on the opposite side, it works. Why? Because these items match in depth. It's just practical. Other random thoughts: - I totally agree that your shower is too small. Wouldn't the easiest thing be to lose the adjacent closet to enlarge the closet /leave everything else as is? - Your proposed sketch contains a pretty big problem with the toilet: It's across from the vanity, which means that you'd be looking at yourself as you sit on the toilet. No thanks. - You've drawn in a 6' tub ... that's a big tub. Unless you're quite tall, a 5' tub will be fine; in fact, unless you're tall, you'll be prone to "slipping down" in a long tub. Most people like a DEEP tub but not necessarily a long tub. Consider nicer amenities (such as arm rests and integrated grab bars) rather than extra length. - Also, in your proposed sketch, getting into the shower would be problematic. - Last thought about your proposed sketch: Duplicate sinks in a 5' vanity will eliminate most of your at-sink storage. Drawer storage at the sink trumps repetitive sinks every time. - Okay, I was lying about that being my last comment: Do consider where you'll hang your shower towels and where you'll place your fingertip towels (if you go with duplicate sinks, you'll want both sinks to have access to the fingertip towels).