Are you sure you have enough room so you have at a minimum 42" of aisle space on either side?

We moved our sink from a perimeter wall to an island. Probably 4 ft. It was $5K.

Do you have any type of in-floor heating in that slab? Cutting/drilling into the floor to move plumbing, ect. will not be easy with in-floor heating.

We moved our main sink on and dishwasher that were on an island about 9ft (and kept the original plumbing for prep sink). They had to drill in the slab and run the plumbing. Added about $500 to my total plumbing cost.

I can't imagine paying $5K for that! We added the sink, had to run a new water line from pool bath outside kitchen for fridge and hooked up all plumbing and DW for $1400 total.

ETA:. I'm in Tampa.

You can rent a concrete saw. A slab is usually 1-1/2" thick. And you'll need a sledge. Or get some bids.

I'll have to go back to my quote but I think it was $5K. Maybe I'm mistaken?

While you're pricing out moving plumbing, I strongly suggest you post your proposed layout in another thread. Before you spend money on the move...make sure you have the best possible layout - you don't want to end up hating it once it's done. Since you're probably going to be spending quite a bit of money, I'm sure you'd like to do it right!

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How do I ask for Layout Help and what information should I include?

http://ths.gardenweb.com/discussions/2767033/how-do-i-ask-for-layout-help-and-what-information-should-i-include

$500? Where I live, NOTHING relating to a remodel costs only $500.

I moved my sink 3 inches on a post tension slab as part of a whole house repiping . Due to all the demands by my inspector, the plumbing extra cost was $800 for the drain moving.

This cost did not include the following as they are part of my entire repiping quote:

1) the radar? scanning for the metal wires

2) 2 man crew just to break up the channel by hand where it's less than 6" from a wire,

3) concrete refill

extra required by inspector that Repipe company paid for without charging me:

4) concrete testing for high pressure concrete

5) structural engineer

6) extra concrete work below the slab and re lay the pipes below the concrete

7) special sand packing and liners below the concrete - recommend by engineer so the city feels like something was justified

8) rebars on either side of the 4" channel - again unnecessary but engineer said it was an option

I have no idea how much all this cost the repiping company. With a 4 months delay on a normal 2 day job, they just wanted to get it done and signed off.

Your cost will be partially influenced by your city inspector. My neighbors did theirs without permits and were 1/4 of what I spent.

As others have pointed out ... it depends on what is buried in that slab.

Optimize TWO layouts first, with and without moving the sink, then check costs.

It could be low or high. If you have a post tension slab it will be high. You need to get an estimate from YOUR contractor for YOUR slab, in YOUR house, with YOUR plans, in YOUR city/state.

As for the 1 1/2" thick slab -- if you read it on the internet it must be true! Seriously a residential slab will often be 4 to 6" thick in the middle with a 4-6" layer of gravel underneath. Around the perimeter or load bearing walls it could be up to 24" thick. Of course this is a generalization and the only thing that matters is how YOUR slab is laid.

Agree the best idea in the planning phase is to draw up a plan that moves the plumbing and another plan that leaves the plumbing in place. Then you can prioritize what's most important to you within the available budget.

Clearly you need to know more about the foundation you are on. If you are on a post tension foundation then unless you can hide any plumbing changes above the floor in the island, going into the slab is going to cost you much more than you could imagine.

I live in an area of slabs almost exclusively. No post tensioner ones though, which does help the keep costs down. Every time we have moved a sink, and cutting concrete was involved, it's been more than 1K but less than 5K.

With a notable exception where almost all of the concrete in the kitchen had all kinds of trenches in it for moving a lot of things. That was 20K. Not only because of the numerous holes, but because she kept changing her mind and everyone was a separate trip. The logistics were a nightmare.

We are on post tension slab and we moved the sink when we remodeled 14 years ago. I can't remember the exact cost, but more than 3k. This time around the sink is staying in the same place, but we eliminated a prep sink in the island because DH said no way are we doing (spending) that again!

We are on a post tension slab. Our sink is staying put