A successful kitchen sink installation starts with measurements and compatibility checks. The countertop opening, cabinet, faucet, drain, disposal, dishwasher connection, and shutoffs all need to work together. Preparing this information can prevent surprises during the visit.
Identify the Mounting Style
Drop-in sinks rest on the countertop, undermount sinks attach below it, and farmhouse styles can require cabinet modification. Integrated sinks may be part of the countertop itself. The mounting style affects measurements, support, sealing, removal, and who may need to modify the counter. Confirm the existing style before ordering a replacement.
Measure the Opening and Cabinet
Measure the opening length, width, corner shape, cabinet width, available depth, and clearance beneath the counter. Compare those measurements with the manufacturer’s required cutout, not just the outside sink dimensions. Check for drawers, shelves, supports, and plumbing that could conflict with a deeper basin or offset drain.
Check Faucet and Accessories
Count faucet holes and measure their spacing. Decide whether the faucet, soap dispenser, sprayer, air gap, disposal, and strainer will stay or change. A new sink may not match the existing faucet arrangement. Confirm that the faucet reach clears the basin and that the handle can operate without striking a wall or backsplash.
Inspect Supply and Drain Connections
Look for corroded shutoffs, brittle supply hoses, a misaligned trap, a leaking strainer, or a disposal that is difficult to disconnect. The new sink may have a different drain position or depth, requiring changes below the cabinet. If the dishwasher hose or disposal is connected, include those details when describing the job.
Consider Countertop and Cabinet Work
Stone, solid-surface, laminate, tile, and wood counters have different cutting and support requirements. An undermount sink may need clips, adhesive, and adequate support. A farmhouse sink can require removal of cabinet framing. Ask whether countertop cutting, cabinet alteration, sealing, and surface restoration are included or handled separately.
Prepare the Area
Empty the cabinet and remove stored items from the work zone. Take photographs of the sink, faucet, connections, and label information if available. Do not force stuck valves or disconnect lines that are actively leaking. Have the selected sink and accessories on site if the installation is being scheduled around specific products.
Questions Before Work Begins
Confirm the sink model, mounting method, faucet plan, disposal and dishwasher connections, shutoff condition, countertop responsibilities, leak testing, cleanup, and disposal of the old fixture. Ask what could expand the scope and how approval will be handled. Clear expectations are especially important when several trades or a custom countertop are involved.