The bathroom lavatory, or sink, should be placed far enough from a wall or shower wall that it's comfortable to use and easy to clean. The NKBA recommends 20″ measuring from the center of the lavatory to the wall. Code is a minimum of 15″ (with 4″from the edge of a pedestal sink to the wall).
Clearance in front of the vanity: 21" minimum, although 30" is recommended for a total of 51" from the wall.
Guidelines recommend including at least a 24” wide landing area to one side of the sink, and at least an 18” wide landing area on the other side. Notice the sink can be close to a corner, as long as the return has 21” of frontage.
Connolly recommends that the faucet should extend out at least seven inches from the back of the sink, so you can wash your hands without banging them against the sink. So, if your countertop is 24 inches deep, that would put the spout about 11 inches from the wall.
Sink Landing Counter Space
The landing space requirement at a main sink is 24″ on one side and 18″ on the other side. The countertop landing area beside the main sink helps with Clean-up duties. With the dishwasher typically places on one side of the main sink the 24″ landing counter is taken care of.
The bathroom sink's water lines are roughed-in 3 inches above the drain. Measure 21 inches (approximately) above the finished floor. The hot line and cold line are spaced 8 inches apart (from left to right). From the center of the drain, measure 4 inches to the left and 4 inches to the right.
So looking at the toilet, make sure there are at least 15 inches of clearance from the center of the toilet to any adjacent fixture (or wall). For example: If a bath vanity is next to your toilet, you'll need 15″ of clearance.
When sinks are installed into a countertop, they should be placed as close as possible to the front edge for maximum accessibility. The sink must also be installed so that the highest point (either the front rim or the countertop) is a maximum of 34 inches above the finished floor.
Yes, Vanities Should Be Attached to the Wall
Most of the time, plumbing comes through the wall underneath the sink, and the vanity's cabinet keeps it hidden. A vanity that isn't attached to the wall could shift, either with time or because you've accidentally bumped into it.
In nearly all cases, the big answer is yes — you should attach your vanity to the wall. What's more, the vanity should be flush against the wall, with no space between the back and the wall itself. The reason for this is to hide and protect your plumbing.
Small-Bathroom Vanity Placement
Placing a vanity in a corner takes advantage of every inch of floor space and also allows for storage options on two walls. A recessed cabinet installed into a sidewall is a smart way to capture space that is typically overlooked.
At least one receptacle outlet shall be installed in bathrooms within 900 mm (3 ft) of the outside edge of each basin. The receptacle outlet shall be located on a wall or partition that is adjacent to the basin or basin countertop, located on the countertop, or installed on the side or face of the basin cabinet.
The least amount of space that should exist between the countertop and upper kitchen cabinets is 18 inches, but it may even go up to 20-22 inches.
Place a sink near a dishwasher
You most certainly want your dishwasher and sink to be next to one another. This will make loading the dishwasher easier and more efficient; you can just scrape or rinse off your plates in the sink before setting them in the dishwasher.
The correct rough-in height for sink drains to pass the inspection is between 18 and 20 inches. Standard sink drains usually start from 24 inches and stop at 28 inches, so the rough-in height should be slightly lower than this height range.
If you are referring to the rough plumbing, it should be flush with the finished wall. If it has to stick out of the wall, no more 1 inch, or enough pipe to receive the the next fitting. The drain stub-out extends from a fitting -- usually a sanitary tee -- to a point 3 or 4 inches beyond the wall.
The critical distance, or how far the fixture can be from the vent pipe, is determined by three factors: the pipe size that codes require, the type of fixture you want to install, and the number of fixtures that are already wet-vented on the same line.
Backer Rod and Caulk
One of the best ways to fix the gap between the vanity and the wall is to use a backer rod and caulk. Before getting the rod, you must carefully measure the gap to get the right dimensions. Taking this measurement ensures you get a rod that fits perfectly without cutting or shaving it first.
Rough-in plumbing is the process of installing vents, sewers, connections and waterlines. During the finish plumbing phase, plumbers will finish installations and connections to get the home ready for use.
The recommended distance between a kitchen counter and a kitchen island is 42 inches. If sharing cooking duties, try 48 inches. Wheelchairs require 60 inches.
Many experts suggest that any kitchen should have at least a minimum amount of 13 feet of countertop surface. Trying to squeeze more countertop than this into a small kitchen could rob the room of other features like a sink or stove large enough to meet your needs. Or it may make the room hard to safely walk around in.