Replacing kitchen countertops and sink

I suspect most buildings will be fine with replacing just a sink (and/or faucet) assuming they are going in exactly the same place and none of the piping changes. But of course the only way to be sure in your situation is to ask.

Sink can be replaced without plumbing changes. Do not ask this to the managing agent. Just mention that you are changing countertop - FYI.

If you are not removing any cabinets you do not have to replace the branch lines.

Thank you for the responses. This is very helpful.

I have a related question. Is it easy to just replace the countertop and keep existing cabinets/sink? I currently have granite (I believe) on top of mdf cabinets with an undermount sink. Not sure how the countertop is attached to the cabinets. Part of the stone does extend upwards to become the backsplash, which I want to replace with tile.

Also, roughly how much should that cost, assuming a small 8x8 kitchen, with say 12 linear feet of counters? I'm thinking of caesarstone or silestone. Thanks!

I think my building the rules say that if you open the wall to do anything plumbing related then you are required to replace all pipes back to the risers.

Most buildings say that if you open the walls you need to change the branch lines to the riser but it also includes if you are removing cabinets as you then have access to the wall, In this case the cabinets are staying so you would not have to do it