Moving a sink to an island changes where its water and drain lines must run. The cabinet plan also needs room for the trap, shutoffs, and any dishwasher or disposal connection. Finalize those details before ordering cabinets or cutting the floor.
Review the drain route before fixing the cabinet layout
Have the plumber check the available route and whether the drain can maintain its required slope. Ask where the vent will run and what access will remain after the counter is installed. A slab and a framed floor offer different routing options.
Coordinate appliances, cabinet storage, and service access
Give the plumber the sink depth and disposal dimensions. Ask the cabinet installer to show where drawers and shelves will sit. Confirm that shutoffs and connections will stay reachable once the island is finished.
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