Very standard layout. You could reverse the door if you don't want to see the toilet first thing. You could change vanity to a single sink for more storage. Otherwise, don't sweat it. Doors need a place to swing...

Why aren't you talking to your builder about this stuff? You have another post about another bathroom.

Just talk to the builder/contractor/architect. Tomorrow.

Slightly smaller window and center it between the tub and counter edge

Definitely a single sink and storage.

Then tell him what you don't like and get him to do it over.

Seriously, though. It's a sink, toilet, and tub. There are just so many ways you can rearrange 3 things. This can't be that hard.

Can the door/entrance be moved to the right, to allow "door-swing" to take place in center aisle? This would allow you to move vanity away from far wall/window?

I would go with Mark's and ajuju's suggestions. If the door can't be moved enough for the vanity to extend the length of the room, at least there would be room for shelving or a shallow linen closet on that wall.

Can you enlarge the space to have a lavatory (or doubles), plus linen storage in one space and the WC and tub in another space?

BUT WAIT! (just like those cheap TV ads) another option:

I like Marks renditions. I would lean towards one sink, more room for drawers. Another point, -will you have a need for more linen storage? I quickly looked at your plan from your other post and didn't see an additional closet, unless it was changed. I don't know how many kids you have, but with one bath for four bedrooms, I might consider more storage. (I think I mentioned that on your other thread, sorry if repeated.)

We had three bedrooms, one bath for our kids, but had a large hall linen closet. This thing was full of extra towels and toiletries, sheets, pillows, blankets, summer beach towels, sleeping bags, etc. Loved that storage. We also had a door separating the shower and toilet from the sink space in the bathroom. Someone could shower, while another was grooming.

Your plan would swing the door into the person using the nearest lav and also there needs to be enough space between the cabinets and the shower tile for the door and its casing trim. Don't be forced to butt or scribe the trim to the tub or the vanity cabinet, Tile usually extends beyond the tub face and down to the floor.

It might be necessary to flip the tub and wall cabinets so the tub stays at the outside wall.

There is no perfect plan for a bathroom this tight.

i would definitely do a single sink so that you have more room for storage drawers and more counter space.

RES, this is the configuration of both bathrooms in our house (except with a single sink). Our bathroom is wide enough - and the door positioned in such a way - that the linen closet behind the door is the depth of the tub. It is wonderful storage space! The other advantage to having the tub at the top of the drawing (for use, anyway) is that we have a towel bar under the window - very convenient to the tub/shower.

When I look at bathroom plans, the big things I try to think about are:

- where will I hang my towel?
- where will I keep extra toilet paper?
- is there enough storage space?
- is there enough counter space?

"Enough" is a relative term - what is enough for me may not be enough for others.

Move the other windows too, and maintain balance.