The question about cost depends on several factors. Is the bathroom on the first or second floor? Whats below it?? Of course where you are makes a difference as well. We added a master bath last year. It was on the second floor, over a office below and there was no plumbing there at all. The plumber had to bring the entire stack up from the basement and then put in toilet, tub, shower and sink and put the vent up through the attic to the roof. The cost was about $5000- which I thought was reasonable. This was just the cost of labor- valves and fixtures were extra. We also had to pay a carpenter to box in the pipes in the room below and repaint of course!!! (One thing always leads to another) We are in the Boston area. You already have plumbing in the area, as well as an air stack through the roof. Remember too that depending on the size and circumstance of your space raising up the floor might make replumbing much less expensive than either putting it into the floor- or under the floor as we did. Good luck

If you could modify the cabinet frame by an inch or so maybe you could make this sink work. The outside dimension is 12-5/8. My daughter has this sink in her bathroom. Her'sis a Porcher sink but they have been bought out by American Standard. It is now called DXV. It is also available in a square or oval shape. Here is a link. DXV petite sink

Thanks for all the replies. J Design - the ceiling is 8 feet high. To the left of the photo (unpictured), there will be a new 60x30x18 tub. The back wall, pictured, is 80" including where the tub is. That leaves 50" and realistically 48" to play with if I space the edge of the sink at least 2 inches away from the tub. After looking more closely, I'll need a pedestal sink narrower than 22", the sink pictured is 19" and the tub now is 29" on the most outer part. ACM, I think unfortunately, having even a small vanity would seriously crowd the tub, or vice versa. We hope to put a partial glass enclosure but need to think about if we can hinge it at a place that still gives us room to exit the shower near the sink. Does this all make sense?

Update: I ordered the Galba toilet from Luxury Modern Home - 24.5" long and it sits flush to the wall, allegedly. Ah yes, "Luxury Modern Home," that well-known bathroom fixture maker...but at least it has luxury in the name and the Amazon reviews were not terrible. My contractor laughed at me but admits it solves a problem neatly, if it works. I will say the customer service has been good. They called to ask whether a newer model was OK (some sort of bowl reconfiguration), then found me the old version when I said I didn't want the new one and shipped it overnight by Fedex. Anyway, for those who may have a similar issue to me, Luxury Modern Home apparently has toilets in 23", 24", and 25" lengths now, all with 12" rough and slightly different styling (rounded vs square edges). I will report back about the Galba.