Remove the tops, move and secure the island, have the tops reinstalled followed by the cooktop. Tops never should have been installed without the island permanently attached to the structure.

Fix it in place where it is. No one will ever be able to tell that anything is off center. Even on the 1/10,000 chance they are standing in the 1 spot where anything might line up. Move 6” the other way and it won’t line up.

Countertop people told me: just ask friends to lift slightly and push a bit and move it by three inches. I am not sure if I risk anything. I am gonna remove my Miele for sure out of the question that I remove that huge porcelain piece by

Do not take on any liability for moving thousands of pounds yourself. It needs to be fastened where it is, as long as it is not pinching the electrical, and there is 42" aisles. If you do not have enough aisle space, or there is a problem with the electrical, the kitchen company that failed to fasten it in place in the first place need to do the moving.

I think they are both at fault here! Cabinet installers should have anchored the cabinets! Countertop people should have REFUSED to set your tops without it being installed.

I would tell them both to figure it out! Agree with the previous poster....BOZOs!!!

Tops should be removed....island moved and secured....reset top.

Had a client once that forgot about her barstool overhang when cabinets were being installed. So after tops were set, she wanted it moved about 6 inches. After getting my price to relocate it....they did it themselves. Everything went fine, but they took on a huge risk.

My 2 cents...

If I am understanding correctly, when the countertop people came the island was in one place, when they left it was in another place. They need to come and pull the tops on their dime and then you or the cabinet company can move the island back into place and they can reinstall the tops. Alternatively they can accept responsibility if the top is damaged while you move the island, or they can come move the island.

I completely agree that the cabinets should have been mounted to the floor but so far as I know that is not required. However, the island was in one place when they got there and another place when they left and since you didn't hire them to move the island...

That is really the more minor issue though. I would argue that they are at fault for any expense you incur to remove and reinstall the top. There is no way that the countertop people didn't realize that the island moved 3" and at that point they had a duty to pause the installation until the situation was addressed. Once a defect is discovered you are not allowed to make the defect more costly to address just because you believe it is someone else's fault. Moving the island back into place before the tops were installed would be a fairly minor job without any real risk, moving the island back into place once the tops are installed increases the risk.

So be willing to pay the trip charge, as you might have had to pay that even if they properly stopped work, but resist paying anything more.

Depending on the design of the island, the island top could be dangerous if not anchored to the floor.

Cabinets with 220v power running from the floor through the cabinet to the cooktop should be anchored. This would be a normal expectation by the stone installers. Its the responsibility of the cabinet installers, the GC if hired by the GC.