my dd did this very same thing. i think it looks odd, she doesn't mind it.
personally it would bother me enough to change it asap.

Sometimes it's better to be off center to avoid a stile in front of your face in a multipaned situation. Plus if the layout is better, you can't really put a dollar figure on that.

Here's a couple of links from previous discussions.
Does a window have to be centered above a sink?
How much will 3" affect centering my sink?
Help! Should my sink be centered under a window?
Centering sink under window or not?

I post this kitchen enough that people are probably tired of it but here is a not-centered sink. The right edge of the sink is centered on the mullion.

Its not a balanced cabinet arrangement anyway and to center it would have severely restricted the base cabinet arrangement. A non-centered sink may look "off" if the whole set up is formally balanced except the sink, but not in all cases.

If it's lined up with one side or the other or centered on a "pane", I think it will be fine.

I think discontent for some people arises when the sink seems to be just plopped down w/o any obvious centering or lining up. So, have her center it on a pane or line it up with an end and I think it will look fine. While that can be fine for some, I think it does cause a bit of jarring for others.

As LaxSuperMom said, layout is more important and what I would be looking at if I were looking at houses.

My kitchen sink is not only not centered under the window, it's not centered in the sink cabinet, this about drove my ocd gc over the edge, seriously. Me? I've barely noticed it since completion, what I lost in symmetry I have lived with and loved in function. No regrets. If your daughter says she believes that the only way to make the kitchen layout work effectively, then I say more power to her -- and the next buyer will likely appreciate the thought that went into it, if not at first glance they will when they're working in it day in and day out.

My sink is not currently centered with my 6 foot window...it is in front of the left half of the window. We are remodeling now and will leave the sink in the same position. It is the only way for me to have enough room for drying dishes next to the sink and maintain enough counter space near my stove.

I think it is more important for a small kitchen to be functional then symmetrical. It will add to it's resale value as well.

hi flseadog...

Here's my old kitchen with it's uncentered sink for your visual. (My new kitchen has the sink centered.)

To be honest, I never thought anything about it. It never even occurred to me that it was "wrong". My GC for my remodel was the one who said to center it.

KA:)

I'm wanting to have my sink to the side too, to create a larger prep area. It doesn't look as well as the centering does, but it's not unsightly either. Function over beauty.

I noticed this sink yesterday and thought-COOL! I am pretty sure my sink will end up off centered somewhat but also realize the other elements in the vicinity of the sink have a lot to do with how out of balance it looks. Faucet placement and other factors can help it blend in.

If you look closely- not only is the sink off center, so is the upper molding frame around the sink. It doesn't even line up with the balusters on the bottom by the sink...but that isn't at all noticeable at first! Strategic planning or sloppy planning? Only the owner knows.

Thank you all for your help. All of the links were great, laxsupermom. I knew they were out there but I couldn't find them. Palimpsest your photo and thoughts focused DD on the correct issues to work on. The sink she wants to use is the Kohler Prologue. This will give her a good size sink basin and enable her to have a pullout trash can under the drainboard/wet prep area of the sink according to a few KD's. Her wall cabinets will seem to be symmetrically placed around the window and she wants a pendant light over the sink so now she thinks it would be better to have the basin portion of the sink centered on the window. The wet prep area would extend beyond the right edge of the window but with the faucet centered on the basin and the window do you think this would accomplish the trick of making things look right?

Buehl, on one of laxsupermom's links, you commented on how a DW should not be between the range and the sink. This was the exact issue that started DD on thinking about moving the sink off center to the right. If she can gain enough space she can move her DW to the left of the sink. Right now it's driving her crazy because it always seems to interfere with prep and clean up. If she centers the sink basin on the window she will have 21" from the DW to the left side perpendicular countertop. Does that sound like enough space?

Thanks again, everyone, for your thoughts.

Here is a link that might be useful: prologue sink

I think the millwork does line up on the last photo, and its a distortion of lens, which is spreading the right side of the photo for a wide angle shot.

However, this is a Great example of an ordered, balanced arrangement (which I kinda thought wouldn't work)--with an offset sink. It looks good. I do agree that a pendant would throw it off more, but the sink Area as a balanced unit rather than the Sink as a centered unit is successful in never_ending's example.

Lovely photo, never_ending, but I think what you're noticing is an optical illusion because that photo is shot at a slight angle from that sink/cabinet set-up. I'd bet money that IRL, it all lines up.

But it does point out that a lack of absolute symmetry and/or centering is only noticeable when you're standing directly in front of something. Stand a little to one side or the other and it might be a case of out of sight, out of mind.

52" wide window ... that's either one cumbersome single- or double-hung window or a sliding window.

I have sliding corner windows with a corner sink. When we remodel, I'm keeping the corner windows but most likely ditching the corner sink in an effort to gain more counter between sink and cooktop. The end result is that my sink won't be centered on either window - that would be impossible. ;-)However, I am planning to center (or as best as I can) the sink on one half of one of the sliding windows as shown in kitchenaddict's pic above. Personally, I'd rather this set-up with a sliding window. I'm just not keen on staring directly at a divider as I would if a sink were centered on it.

Yep, that's one big window and the worst thing about it is that it overlooks 2 driveways and a not very attractive house about 50 feet away. The house was built in the mid 1950's and my guess is that the original window was a fixed window flanked by a small casement on each side. The prior owners put in one double hung replacement window so there is no stile in the middle to block the view although that might be a blessing if there was one. LOL.