That's going to look off balanced.

I think I will have the window headers all be the same height, so it will only be off level from the door header which should not be noticeable since that is going to be under a covered porch area

You will only have 8" from the ceiling

Yeah. But I know I don't really want less than 36" anywhere - at least for windows where furniture may be near them. So that would have to be the happy medium...? Bathrooms will have higher windows for privacy reasons.

Yes 36" off the floor will at least give you a foot above.

It is best to provide an interior wall for the bed but if you put a window behind the head of a bed 36" will be too low.

There are no standard window heights in a house. Be careful to leave space for a header above and also a max step over (stool trim) height of 44" below for at least one window in each bedroom to meet the emergency escape and rescue opening requirement.

Be aware that the rough framing sill will be about 2 1/2" lower than the finished interior window "stool" trim and it will be measured from the sub floor.

For second floor bedroom windows I usually put the rough framing sill at 24" above the sub floor unless there is a privacy issue or the room is small in which case I would raise the rough sill 6".

Hang 'em high! It lets more light in!

I considered raising the windows in my house, but had concerns about having a view of the roof overhang. Something to consider.

All are really great and sound suggestions! Our current house also has 8ft ceilings and our windows are 36inches above the floor. If they were any higher, they would totally look like they were floating. And you would have to get smaller windows so that you can have room above the windows.

First -- I'm surprised to hear anyone building with 8' ceilings today. I know Realtors in my area have a harder time selling older homes with less than 9' ceilings. (Maybe different where you are?)

Few pieces of furniture are taller than 36" -- if you plan to have chairs, sofa, etc. near windows. In a bedroom, will you want to put a dresser or chair under a window? I don't think window headers need to 'match' doors.

When I see a photo of a bedroom where the bed is against a window, I assume the house was built when double beds were the norm, and now there is no other place to put queen or king bed. The hard wiring of our primitive brains prefers a solid wall behind a bed.

As you place your windows, consider how they will look from the outside.

You should check your code rules -- there are often minimum height from floor and also size/dimension considerations for bedroom egress.

I agree with your thinking nicpedia. When we built our home I put the windows high enough to have a desk/dresser under. Mine are 38" from floor to window and I am quite happy with the placement. I think having them centered depends on the individual room layout. In the master ours is centered because that is where I wanted the pop of color from the curtains. In the kids bedrooms the windows are on one side so they are not above the bed, they daylight where I want, and ventilate better directly across from the door which is also on one side.

Well everyone, I decided with 37". The framer started the first window at 32 and it was just too low for me. I felt like I was going to fall out just standing close to it. I am not sure if 4' windows are considered tall, but they are to me since I grew up with 3' and 3'6" window heights. The 37" or so is because 36" would have left just a tiny scrap for cripples between plate and header, so the headers are just going to be against the top plate. This means I will have at least 8" more like 9.5" of wall above each window which I think is just fine! My eave/soffit won't drop down below the top plate because I went with a raised energy heel system.

Windows will be centered in the MBR and I will just center the bed with the window and since they will be 37" high or so, it should be okay to operate the window from the head of the bed.

The smaller bedroom (or office) I offset the windows to allow a bed to be placed in a corner which is universal with a desk. I like having a solid wall behind a desk for storage purposes and to eliminate screen glare. The only hesitation I have is it would probably be nice to look out a window behind a computer monitor...

I didn't do 9' ceiling because that is just more volume of air to heat and cool. Substantially more when the entire house is 1' higher in internal space that is honestly not much more useful than 8' high ceilings. I can see a fan being higher being beneficial and maybe making a space feel larger but besides that I don't know what else is to gain? I am trying to stay modest on design.

maybe look into clerestory windows.

The disadvantage of such a high window sill is the limited view when seated and the large blank space below it outside. This is unfortunately associated with developer tract housing where cost trumps all other considerations.

The drawing below shows 5 ft and 4 ft high windows.