What size should a shower niche be, and where should it go?
A standard shower niche runs 12 by 24 inches, sits about 3.5 inches deep, and lands 36 to 48 inches above the shower floor, roughly chest to eye height for an adult. Added while the wall is already open for a shower or tub-to-shower remodel, a single niche typically adds $200 to $600 to the job. Cut into a shower that is already finished and tiled, the same niche runs closer to $700 to $1,200, because the crew has to open a section of wall, waterproof it, and match the existing tile.
This guide covers the sizing, placement, and wall choices that actually decide whether a niche looks built-in or looks tacked on, plus the real cost range for adding one in San Diego.
Standard shower niche sizes
Most niches fall into three sizes: 12 by 12 inches for a single-shelf spot, 12 by 24 inches for the most common single-row niche, and 16 by 20 inches or larger for a two-shelf or double niche. Depth is almost always 3.5 to 4 inches, since that matches the depth of a standard 2x4 stud wall once the niche box sits inside the cavity.
Wall framing sets the outer limit on width. Studs land 16 inches apart on center in most homes, which leaves roughly 14.5 inches of clear space inside a single stud bay. A niche wider than that has to cross a stud, which means cutting one and adding a structural header above the opening to carry the load. That’s a normal thing for a framing crew to handle, but it adds labor, so a 12 or 24-inch niche that fits inside one bay is the cheaper, simpler build.
How high should a shower niche sit?
The 36 to 48-inch range works for most standing adults, since it puts the niche at chest to eye level and you can reach in without bending or stretching. If the shower doubles as a tub-shower combo, drop the niche to around 25 inches from the tub floor so it’s reachable while sitting. Shared family bathrooms often split the difference, landing a niche around 30 to 36 inches so it works for both kids and adults. A second, higher niche is common in a two-niche layout, giving the household one low reach and one higher, out-of-splash-zone shelf.
Which wall should the niche go in?
A non-plumbing wall is the easiest place to cut a niche, since there’s no supply line, drain, or valve body to work around inside the stud bay. The bathroom plumbing page covers what typically runs through a wet wall in an older San Diego home, and a niche on the opposite wall avoids all of it.
An exterior wall works, but it comes with a real tradeoff: compressing or removing the wall’s fill to make room for a 3.5-inch-deep niche box leaves that section noticeably less protected against outside temperature than the rest of the wall, unless the crew builds out the cavity or the home already has 2x6 exterior framing. Interior walls don’t have this problem at all, which is one more reason an interior wet wall is the simpler pick when the layout allows it.
The plumbing wall itself is sometimes framed with 2x6 studs to leave room for the mixer valve and shower head piping, which can actually give a niche more depth to work with if that’s the only wall available. Either way, confirm the wall type before committing to a spot, since moving a niche after the wall is open costs more than planning it before demo.
Prefab niche pan vs. a custom tiled niche
A prefab foam niche form, like a Kerdi-Board, Laticrete Hydroban, or Noble niche, drops into the stud bay as one sealed, pre-sloped unit with the waterproofing built in. It installs fast, runs $50 to $150 in materials before labor and finish tile, and works well for a standard 12 by 24-inch spot.
A custom-built niche is framed from lumber, wrapped in a waterproofing membrane like RedGard or Kerdi, then tiled to match the surrounding shower wall exactly, joint for joint. It costs more in labor, but it’s the only way to get a niche sized to a specific tile layout, a double-shelf design, or a niche with a built-in accent strip. The bathroom tile buying guide covers how tile choice and layout drive that decision.
How much does it cost to add a shower niche?
Bundled into a shower remodel or tub-to-shower conversion, a single 12 by 24-inch niche typically adds $200 to $600, since the wall is already opened, framed, and waterproofed as part of the larger job, and the niche just rides along. That’s the cheapest way to get one. The tub-to-shower conversion guide and shower remodel guide cover what else is usually bundled into those jobs.
Cut into an existing, already-tiled shower as a stand-alone project, the same niche runs $700 to $1,200 or more, because the crew has to demo a section of finished wall, frame and waterproof the opening, then tile it to blend with tile that may no longer be available in the same batch or finish. A wider niche that needs a structural header, or a two-shelf design, adds to either number. If a full shower remodel is already on the table, that’s the point to add a niche for the least money.
Does a shower niche need to be waterproofed and permitted?
Yes. A niche sits inside the shower’s wet zone, so it needs the same waterproofing membrane as the rest of the walls, whether that’s a prefab unit’s integrated liner or a painted-on or sheet membrane over a custom-built box. Skipping this step is the single most common reason a niche leaks into the wall cavity years later.
On the permit side, a niche added during a permitted shower remodel is covered under that same permit. Whether a stand-alone niche needs its own permit turns on scope, and that call belongs to the city, not to a guide. In the City of San Diego, permits run through Development Services. Ask your contractor to confirm the scope with the city before demo.
How Bath Pro SD handles it
At Bath Pro SD, we connect you with licensed, insured bathroom crews across San Diego County who plan niche size and placement around your specific wall, your tile layout, and your household’s height before any demo starts. Whether it’s one niche added to a full master bathroom remodel or a stand-alone retrofit into an existing shower, the crew confirms the wall type and waterproofing plan first.
We cover the full county, from San Diego to the surrounding cities. Call (858) 400-4896 for a free in-home consult.
Frequently asked questions
What is the standard shower niche size?
The most common size is 12 by 24 inches, sized to fit inside a single 16-inch-on-center stud bay at about 3.5 inches deep. Smaller 12 by 12-inch niches and larger 16 by 20-inch or double-shelf niches are common too, but anything wider than about 14.5 inches needs a structural header over the opening.
How high should a shower niche be from the shower floor?
36 to 48 inches works for most standing adults, putting the niche at chest to eye level. Drop it to around 25 inches for a tub-shower combo so it’s reachable while sitting, or split the difference around 30 to 36 inches for a bathroom shared by kids and adults.
Can I add a shower niche to an existing tiled shower without a full remodel?
Yes, but it costs more than adding one during a remodel, typically $700 to $1,200 versus $200 to $600. The crew has to demo a section of finished, waterproofed wall, then tile the new opening to blend with tile that may not match exactly if the original run is discontinued.
Can a shower niche go on an exterior wall?
It can, but compressing or removing the wall’s fill to fit a 3.5-inch niche box leaves that section noticeably less protected against outside temperature, unless the cavity is built out or the wall already uses 2x6 framing. An interior wet wall avoids the issue entirely.
How much does it cost to add a shower niche during a bathroom remodel?
Expect $200 to $600 when it’s added while the shower wall is already open as part of a larger remodel, since the framing and waterproofing are already happening. A stand-alone retrofit into a finished shower runs $700 to $1,200 or more.
Do I need a permit for a shower niche?
A niche added during a permitted shower or bathroom remodel is covered under that permit. A stand-alone niche cut into an existing wall touches the shower’s waterproofing layer, so don’t assume it’s cosmetic. The bathroom remodel permit guide covers what triggers a permit here.