Bathroom Laundry Room Floor Plans: Narrow & Square Dimensions

Adding a washer and dryer to the bathroom makes a lot of sense, mostly because the hard part is already done. The water supply, drain lines, and ventilation are in the walls, so you skip most of the rough-in cost of a dedicated laundry room.

The plumber is already on site if you're renovating the bathroom anyway, and dirty towels get washed in the same room where they pile up. One of the main hurdles? Fitting the machines.

A washer and dryer claim 27 to 60 inches of wall in a room that already has to hold a toilet, a sink, and somewhere to bathe. But many homeowners manage to make it work, and you probably can, too. The bathroom laundry room floor plans below solve that squeeze in two footprints, narrow and near-square, using standard fixtures you can buy off the shelf.

Narrow bathroom laundry room floor plans

A narrow bathroom forces a single-file layout, and that constraint has one real advantage. When every fixture lines up along one or two walls, the plumbing consolidates onto a single wet wall, which keeps supply and drain runs short and installation costs down.

The 5 foot galley bath and laundry (5'-0" x 12'-6")

This is the tightest footprint that still delivers a full bathroom plus laundry, and it works because of the order the fixtures come in. The shower goes at the far end, since the wettest zone belongs on the dead-end wall where nobody walks past it. The vanity and toilet share the dry middle of the room, and putting the stacked washer and dryer beside the entry door means a full laundry basket never travels more than 3 feet inside.

• The shower spans the full width of the room. At 5 feet wide, the room can't hold a shower plus a walkway beside it. Running the enclosure wall to wall gives you a bigger shower than most standard bathrooms fit.
• The washer and dryer stack. Side-by-side units need 54 to 60 inches of wall. A stacked pair needs 27 to 30 inches, so laundry fits in a 5 foot room without taking the vanity wall.
• Wet zones share one wall. The vanity, the stacked units, and the shower valve all sit on or near the same wall, so the plumber roughs in one wall instead of three.

Watch the door swing on this one. A 32 inch door in a 60 inch wide room clears the dryer by inches, so if your appliances run deep, a pocket door solves the conflict.

The bath and laundry with a linen closet (7'-8" x 10'-0")

Adding 2 to 3 feet of width loosens the single-file constraint, and the payoff is storage. Once the shower can move into a corner instead of spanning the room, the freed wall holds a full vanity, a dedicated linen cabinet, and a washer and dryer behind a sliding door in their own closet.

• The laundry closet uses a sliding door instead of a bifold. Bifold doors need clear floor in front of them, and the toilet and entry door swing already claim that floor. A sliding panel gives full access to the units without a swing conflict.
• The linen cabinet fills the gap between the vanity and the door. That stretch of wall is too shallow for a fixture but deep enough for 12 to 15 inches of towel storage, which a combined bath and laundry room goes through constantly.
• The toilet sits in the far corner beside the shower. It stays outside every traffic path and door swing in the room.

Square bathroom laundry room floor plans

Neither room below is a perfect square, but at proportions this close the layout logic is identical. Fixtures wrap the perimeter, the center stays open, and the extra width buys options a galley can't offer: side-by-side appliances, a double vanity, or a full tub.

The laundry room with a half bath (8'-0" x 9'-0")

Not every combined room needs a shower. This plan pairs full-size, side-by-side laundry with a 30 inch vanity and a toilet, which is the right call when the room serves a main floor or basement and the showers are upstairs.

• Side-by-side units give you a folding surface. Skipping the shower frees an entire wall for the washer and dryer, and two full-size front loaders put a counter-height top within easy reach for folding and sorting.
• The half bath label protects you at resale. Marketing this room as a full bath without a shower misleads buyers. Presented as a half bath plus laundry, it counts as a genuine extra on any listing.
• Every fixture keeps generous clearance. At 72 square feet, this is the only layout of the four where two people can use the room at once without negotiating.

The full bathroom with a laundry alcove (9'-2" x 8'-11")

The largest plan of the four, and the closest to a true square, holds what most homeowners want from this room: a full tub, a double vanity, and laundry that disappears when it's not in use. The washer and dryer sit in a 2'-8" deep alcove behind a sliding door.

• The sliding door conceals the appliances completely. With the door closed, nothing in the room signals laundry, and the panel muffles spin cycle noise during the morning routine.
• The double vanity lets two routines run at once. One person can get ready while a load runs, which is how this room actually gets used at 7 am.
• A 60 inch tub still fits. The tub spans the top wall with room to spare, so the layout works for households with kids without giving up the laundry function.

One planning note comes with the alcove: an enclosed dryer still needs makeup air and a vent path, so leave a louvered panel in the sliding door or undercut it by 1 inch, and confirm the vent run with your contractor before framing.

Minimum clearances for a bathroom laundry combo

These clearances apply to every bathroom and laundry room combo floor plan, narrow or square:

• A toilet needs 15 inches from its centerline to any wall or fixture on each side, plus 21 inches of clear floor in front (24 inches in some jurisdictions under the IRC).
• A vanity needs at least 21 inches of clear floor in front.
• A shower must measure at least 30 by 30 inches inside by code, though 36 by 36 inches is the practical minimum for comfort.
• A washer and dryer need 1 inch of side clearance per unit and 4 to 6 inches behind for hookups and venting, plus door swing and standing room for front loaders.
• An entry door should measure 32 inches for accessibility, with 28 inches as the absolute minimum.

Confirm requirements with your local building department before finalizing a layout. Codes vary, and adding laundry often triggers venting and electrical requirements a standard bathroom doesn't have.

Stacked or side-by-side: which fits your floor plan

• Stacked units are the narrow-room answer. They occupy 27 to 30 inches of wall width and fit rooms as narrow as 5 feet, but the dryer controls sit high and there's no folding surface on top.
• Side-by-side units need 54 to 60 inches of wall but give you a work surface. If your room measures 8 feet or wider, side-by-side units with a counter above them usually win on daily convenience.
• A washer dryer combo unit splits the difference. You get one machine on a 27 inch footprint, but drying cycles run 2 to 4 times longer than a dedicated dryer, so consider it only when neither layout above fits.

What adding laundry to a bathroom costs

Placing laundry in a bathroom costs less than building a separate laundry room because the water supply and drainage already run through the wall. Expect these line items on top of standard bathroom renovation costs:

• A washer box and drain run $350 to $800 installed on an existing wet wall, and more if the drain needs a new vent run.
• Dryer venting runs $200 to $500 for a short run to an exterior wall, while interior rooms cost more and ventless dryers skip the requirement entirely.
• A dedicated 120V washer circuit runs $150 to $400, and gas or 240V dryer hookups add $300 to $800.
• Sound insulation around an alcove or closet runs $200 to $600, and it's worth the cost if the room shares a wall with a bedroom.

Build your bathroom laundry combo with Block Renovation

A combined bath and laundry room touches plumbing, electrical, venting, and sometimes gas, so the layout only performs as well as the contractor who builds it. Block Renovation matches homeowners with vetted local contractors who compete for the project, and every scope gets an expert review to catch missing line items like the washer drain or dryer vent before construction starts. Payments are released as work progresses, so you stay protected until the final walkthrough.

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