Upfront, written pricing before any work starts — no surprise charges. Serving all of Montgomery County, MD
24/7 · Call or text(240) 923-5325

Homeowner question · Rockville, MD · October 2026

Swapping a Double-Bowl Kitchen Sink for a Single Bowl and Removing the Disposal in Rockville

By HiTrend Plumbers

A Rockville homeowner asked about replacing a 33-inch double-bowl kitchen sink with a single-bowl sink of the same size, and taking out the garbage disposal for a plain drain. Here's what that change involves.

Stainless steel double-bowl kitchen sink with a pull-down faucet
Before: The current double-bowl sink. The homeowner wants a single bowl of the same size.
Wider view of the double-bowl stainless kitchen sink and countertop under a window
Before: A wider view of the sink and countertop opening.
Under-sink cabinet with a black garbage disposal, white PVC drain pipes and a chrome tailpiece
Before: Under the sink: the disposal on the left and the drain pipes from both bowls.
Garbage disposal with a corrugated drain hose connected to its side, plus white PVC trap and chrome tailpiece
Before: A drain hose runs into the side of the disposal. It will need a new connection once the disposal comes out.
Close view of the under-sink drain layout with the disposal outlet elbow and the trap
Before: The disposal outlet elbow and the drain pipes under both bowls.
Another angle of the garbage disposal and drain pipes under the kitchen sink
Before: Another angle of the disposal and drain lines under the sink.

The question

The homeowner wants to replace their 33-inch stainless double-bowl kitchen sink with a single-bowl sink of the same size. They also want the garbage disposal removed and a normal drain put in its place. They were still shopping for the new sink and sent photos of the current sink and the plumbing underneath for an estimate.

What's going on

Going from a double bowl to a single bowl changes the drain layout under the sink. A double bowl has two drain outlets, which are usually joined before a trap. A single bowl has one outlet, so the drain pieces under the sink usually need to be redone to line up with the new drain and the trap. Keeping the same outside size helps the new sink drop into the existing countertop opening. In the photos, the disposal sits under the smaller bowl, and a drain hose runs into the side of it. When a disposal comes out, any dishwasher drain that feeds into it needs a new connection on the sink drain instead.

What we recommended

  • Reviewed photos of the current double-bowl sink, the faucet, and the plumbing under the sink, including the disposal, the drain pipes and the trap.
  • Shared the request and photos with our technician to put together an estimate for the sink swap, the disposal removal, and the new drain connections.

Tips for Rockville homeowners

  • Measure the outside edge of your current sink and the cabinet width before you shop. A sink the same size or slightly larger is much easier to fit into the existing countertop opening.
  • Check where the drain sits on the new sink. A centered drain and an offset drain need different pipe layouts underneath.
  • If you have a dishwasher, plan for its drain when you remove a disposal. It needs its own connection on the sink drain, often a branch tailpiece.
  • A sink swap is a good time to replace old shutoff valves and supply lines under the sink.
Seeing something similar in Rockville?Call or text for a written price before any work.
Call (240) 923-5325Text Us

Related

Call NowText Us