Kitchen Sink Drain Rough In Height

For a kitchen sink that will be installed in the future, how high off the floor would you center a 1 1/2′′ drain line if you were installing it now?

Kitchen sink drain rough. I’m building a cabin in which I intend to add a kitchen in the future. Whether or not there is a standard drain line-height is something I’d want to know. The kitchen will have standard 34 1/2-inch cabinets and a 36-inch countertop. A stainless-steel sink with 8-inch-deep bowls is the most likely choice.

Just curious if there is any type of “standard” for this sort of stuff?

There is a good chance that you are asking how high the kitchen sink drain should be above the floor. There’s no need to look any further. We’ve done all the legwork for you in terms of kitchen sink drain locations.

Right size

Between 20 and 24 inches is the typical height of a kitchen sink drain from the floor. Depending on the vanity, sink, and trap, this can differ.

What is the rough-in height for kitchen sink drains? Is a kitchen sink drain required to be centered? Can a deeper kitchen sink be installed? And how do you measure a kitchen sink drain? Keep reading for more information.

Installing a Kitchen Sink’s Drain Pipe

When installing a kitchen sink drain, the best practice is to ensure that your dimensions are accurate before proceeding. “Measure twice, cut once,” as the adage goes. To get things properly the first time, double-check your dimensions before cutting the materials.

This relates to determining the height of your kitchen sink’s drainpipe. To ensure that you can accomplish a project the first time around, you must take into account what measures are required. Both time and money are saved as a result.

Factors to consider

There are a few elements to consider when determining the rough-in height of your standard kitchen sink drain height. Your countertop and sink dimensions must be taken into account when determining how much counter space you have.

Unlike kitchen faucets, bathroom faucets have a drain that may be used to remove continuous waste. When shopping for a kitchen sink, keep this in mind.

When purchasing a new sink, check to see if it has a drain or you will need to acquire one that is the correct same size for your sink. Your sink may or may not come with a drain, depending on the brand or kitchen faucet.

The distant between the garbage disposal and the sink bowl, including the cabinet space/base cabinet/cabinet floor is also a factor to consider during the installation process.

Where Do Kitchen Sink Drains Rough-In?

Unlike bathroom sinks and deep sinks, between 20 and 24 inches from the floor, the typical rough-in height for kitchen sink drains. The ideal height for the counter and trap is determined by their somewhat lower height.

While installing the sink drain, you can change the standard height and depth of the sink bowl and sink depths. This is essential for a double bowl that can accommodate varying counter heights.

The p-trap

Your kitchen sink drain’s rough height is determined by factors such as where the p-trap is, how many pipes are needed, and how high your countertop is.


Make sure that the p-trap is situated no more than 24 inches below the sink drain while taking measurements. Your p-trap will be closer to the drain than 24 inches if your sink drain is closer to the ground. There is a lot to consider when it comes to your sink’s depth and vanity height.

Sink vanity with an 8-inch-deep sink and a countertop of 40 inches in height would have a drain that measures 32 inches from the finished floor to where it is. Choosing the counter height and the depth of your sink before deciding where the drain will go is a simple way to save time and effort.

Is It Necessary to Center a Sink Drain/u-shaped trap?

The drain of a sink does not have to be in the center. In addition, the sink drain must be constructed in a manner that allows water to reach it, so that the sink may continue to function as it should.

Dishes may be placed in the middle of the sink without obstructing the drain, allowing you to prepare dinner on one side of the sink while drying dishes on the other.

Is There a Center line to The Pipes Under My Kitchen Sink?

There are times when this isn’t the case. In reality, there are a variety of traps, including J-shaped, C-shaped, and U-shaped traps, all of which can be used to catch mice. In some cases, you’ll need to reposition the p-trap depending on its shape and how easy it is for you to do so. U-shaped traps are the most popular type of p-trap.

If the pipes under your sink are shifted to one side, you’ll have additional room to store items. In addition, this enables the installation of wider drawers if desired.

Are Deeper Kitchen Sinks Possible in my House?

As long as the counter you pick is high enough space to accommodate the pipes that must be installed underneath, you can install a deeper kitchen sink.

To make room for more dirty dishes, many people prefer a deeper sink. When you’re washing your hands in a deeper sink, you don’t have to worry about your hands feeling like they’re in the bottom of the sink.

Consider the fact that if you install a deeper sink, you’ll have less room between the drain and the finish floor. As long as you use piping designed for a smaller area, this is not a problem. A deeper sink means that the drain is closer to the ground than it would have been in the sink were installed at a lower height.

How Do You Measure the Depth of a Kitchen Sink?

You must first measure the normal distance from the inches above the floor to the top of your counter before you can accurately measure a kitchen sink drain. Next, you need to think about the depth of the sink you intend to put in.

If the p-trap is installed no more than 24 inches below the sink drain, you’ll be fine. Calculate how much enough room you have between your sink drain and the floor by measuring your countertop’s average height.

How Do You Measure the Depth of a Kitchen Sink?

From the Drain Rough-In to the Drain

With an 8″ sink depth and a 40″ height, the sink drain would be 32″ from the floor in kitchen sink vanities with 8-inch sinks. Raised and lowered rough-in heights are options in addition to the vanity’s overall height and depth. To handle household chores, cook, and wash dishes, the kitchen sink is often deeper than the bathroom sink.

Bathroom Sink Drain Rough-In Height

If your vanity is 40 inches tall and your sink is 6 inches deep, the rough-in height for a bathroom sink drain should be 18-20 inches from the floor. To remove the P-trap, make sure there is enough area. To empty the sink effectively, you must not exceed the 24-inch maximum or the 18-inch minimum.

Do Plumbing Rough-Ins Affect Building Permit Applications in Different Ways?

Getting a permit may be more difficult if your sink drain rough in isn’t in good operating shape. Inspecting the plumbing fixtures and fixtures after the electrical rough-ins have been approved is standard procedure.

Do Plumbing Rough-Ins Affect Building Permit Applications in Different Ways?

When All is Said and Done

Between 20 and 24 inches is the rough-in height of the kitchen sink drain. There is a wide range of possibilities based on your sink’s depth and vanity height. Drain placement will be further from the floor when the vanity is higher or the sink is shallower.

Drains are not included in all kitchen sinks.


Your sink’s pipes aren’t always centered under the surface of the water. You’ll be able to fit extra drawers and storage underneath if they’re shifted to the side.

You'll be able to fit extra drawers and storage underneath if they're shifted to the side.


You must measure the distance from the floor to the bottom of the kitchen sink that you intend to install. This dimension will alter if you add a deeper sink.

This dimension will alter if you add a deeper sink.