Would expanding the shower to 3’9” and narrowing the closet to 2’ wide be reasonable? I think I could live with 3’9” wide.

Last comment….if I did narrow the closet to 2’ would a 20” door work or would it have to be 18” for a closet door? I don’t know how much smaller a door needs to be than the actual space.

There are a few p;problems with this design.

A. A lot of useless hallway. A hall is a corridor to room doors. Once the room door is covered, any extra hallway is just wasted space. Use that space to provide a 5' x 6' custom shower. That should be large enough to combat any claustrophobia. Also use clear glass doors and a clear glass panel enclosure to enhance the illusion of space.

B. The linen closet is superfluous. As designed the closet is too deep. Sixteen inches is the maximum depth. Anything deeper is largely useless space where stuff gets lost until the next Spring cleaning.

Store linen in the master closet on shelves built next to the door.

C. The toilet cannot be enclosed as shown, and should not be enclosed at all. What is needed is a visual barrier between the toilet and the bathroom door to a void the "Oops, excuse me" moments.

Toilet enclosures need to be vary large to avoid exactly what will result from this enclosure - banged up knees of anyone sitting on the throne if someone opens the door.

For more information of bathroom design standards, see The Illustrated Rules of Good Bathroom Design (Specifically Guideline 21).

D. You will need two exhaust fans as shown. The one next to the shower should be waterproof. Use either a time switch or vapor-sensing switch to ensure the bath is completely ventilated after each use. Avoids mold and bad smells.

There may be good reason why the extra hall space is not being used - heating vents, etc. that are hard to move. You will also need a 2" drain for the shower. The existing drain may be only 1.5" and be difficult to replace.

But, this is a concept drawing, not a final plan. Put your designer to work at cleaning it up.

I would move the tub two feet down the right wall, make the shower fill the corner about 48 x 48, and put the two foot linen closet where the tub had been behind the door.

Shower would be about six by four if you moved the linen closet to behind the door

Very thoughtful responses, thank you! HVAC was discussed but not finalized of course. It was mentioned that a return may go in the master closet into the hallway but I think there would still be room for that potentially.

I agree with StarCraft that the linen closet may not be necessary, since you could store linens in the adjacent closet. However I disagree regarding the most usable depth of a linen closet. I like them minimum 18" but preferably 21-24" to fit larger towels and sheets.

What size is your shower now?

In my current house? Just the standard tub combo of 3x5. In the plan as written, 3x6.

I find 4' x 6' to be ideal. It feels spacious and freeing. It's the number one thing I notice when showering at a hotel vs at home. You can also consider changing your toilet room door to swing out. That might enable you to steal a few inches from there too

Linen closets hold more than linens! First aid/health aids, extra tp and sanitary products, the extra or specialty shower and vanity products. A shallow set of cabinets and drawers shiuld serve those needs, as well as hold towels.

for the record, a "standard tub combo" is not 36" wide but onl 30". so you may not need as much width as you think in order to feel spacious. maybe visit some showroom shower stalls.