What does it cost to move a sink?
Moving a sink a modest distance costs roughly $400 to $1,040 for extending the supply lines, and roughly $1,080 to $2,250 more if the drain has to move with it. Supply lines bend around almost anything; the drain needs slope and a route, and that is where the money goes.
Supply vs drain: two different jobs
Water supply lines are small, pressurized and forgiving: they route through walls and floors with little drama. The drain is gravity: it needs about 1/4 inch of fall per foot and a sane route to the stack. A move along the same wall usually keeps the drain; a move across the room usually does not.
On a slab, think twice
If the drain must travel and your floor is a concrete slab, read moving plumbing on a slab first: the same move costs materially more there.
Calculate your own distance
Draw the room in the free bathroom planner or kitchen planner, place the existing drain and water points, and drag the sink. The estimate follows your actual distances, and the code check watches the clearances.
Frequently asked questions
When is moving a sink cheap?
When the drain can stay: shifting a vanity along the same wall, within reach of the existing trap arm, often only means flexible supply lines and a modest plumber visit. The bill grows the moment the drain needs a new route.
Does this apply to kitchen sinks too?
Yes, with one addition: a kitchen sink often brings the dishwasher with it, and an island position means floor work. See the island plumbing guide for that scenario.
What about code clearances at the new spot?
Most US codes want at least 21 inches of clear space in front of a lavatory. The planner checks that automatically while you drag, next to the comfort guidelines which are stricter.