You’re worried too much about centering things and not enough about function. You’re not leaving enough wall space wiggle room for things to fit (like the refrigerator- it won’t open more than 90 degrees on the left).
What’s going on to the right? Do cabinets turn the corner? Please zoom out.

Here - what’s the space with the question mark?

Those things are being worked out. Just asking about centering right now. Thanks.

The reason I asked is because you have too much packed onto that window wall. Something should move to the adjacent counter - the stove, or a cleanup sink if there’s a prep sink. So this all affects the windows.

I would not worry about centering the window in the space - function over symmetry wins every time

FWIW we have a large window in our kitchen and it's not centered and it is not noticeable at all, there are too many other things happening - pendant lights, cabs etc..

Thanks la_la. So maximize the window and don’t worry about it being off from the center of the sink?

Emily, there is a beam next to the stove that limits how far right it can go; in the wall with the question mark, there is a radiator that can’t be moved and then that perpindicular wall will be all tall cabinets; there is an entry there so no depth for appliances or sink.

Yes - I would maximize the window as much as you can without sacrificing function in the rest of the space - everything is a tradeoff 😅

Also is that a 48 in range in there?

I'd reduce the 48" range ... seriously, no one needs that much cooktop, and it opens you up to extra problems; the need for more hood, more floor support ... to 36". This'll allow the sink and dishwasher to scoot 12" to the right, and everything'll fit in nicely. You'll also get a larger cabinet between the sink and refrigerator, which will be welcome. Keep the window as proposed; it looks great.

Do you have an elevation of that wall yet? There is centering something by measuring but there is also visual weighting of windows/cabinets/faucets, etc. on a wall. When we're in a kitchen we don't look down from the ceiling we look straight forward so if it looks visually appealing is often more important in these cases.

Ok, then the stove has to reduce to 36”. Allow more space for the refrigerator. Then you should be able to center the sink on the window with both centered on the island.

bfelton makes a great point - no one will look at your kitchen from above, they will see it from across the room. If the sink isn't perfectly centered at the window, you can center the faucet on the window, so it looks centered from across the room.

I disagree about centering a faucet on a window ... an off center faucet on a sink is way more noticeable than an off center sink on a window.

Can’t reduce the range for a variety of reasons.

I don’t have an elevation yet- not sure if that’s coming until we get a stand alone kitchen design from the kitchen fabricators.

You have larger problems than the window being centered.

You have no prep space between sink and stove.

Your fridge will not open all the way.

Your dishwasher is in your prep area.

You barely have enough room between sink and island, It should be a minimum of 42" between counter and what sticks out furthest which is the handles on the stove.

I'm assuming there are no cabinets below your island? I say that because if your seating is counter height, you need a minimum of 15" for knees not to bang into the wall.

Your 48" stove needs a hood that is at least 54" wide.

From the edge of your island on the seat side, to where the wall for your stairs are is not 36" wide. 36" wide is minimum code in a kitchen. Same problem on the other side.