The High Window ADU Bath

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A compact ADU bath with a walk-in shower, a place to sit, and daylight from above

Who it's for: An ADU or rental-unit bath for one or two people.

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We care about small backyard homes as much as big ones, and this bath shows how we'd make a compact space feel calm. High windows wash this backyard-cottage bath in clean daylight, and a glowing round mirror keeps it bright after dark. A wide glass shower, a teak bench and pale floating oak make a compact footprint feel generous and calm. Every choice was made for a small space that has to work hard and still feel good. Below, we share each piece we chose and the thinking behind it.

Illustrative rendering, not a photograph. Illustrative rendering of a California Modern ADU bathroom with a glass sliding-door walk-in shower in white subway tile with a matte black rain shower and teak bench, a floating oak vanity with a white sink and black faucet, a round backlit mirror between two black linear sconces, a white toilet and gray concrete-look floor tile. 1 2 3 4 5 6 7 8 9 10

Tap a number to see the piece. The full list is below the image.

Shop this look

26 pieces, linked on Amazon.

01 02 03 04 05 06 07 08 09 10 Complete the room 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Select a number on the image to see each piece.

Everything in this room

Numbers match the markers on the rendering. Items marked "Not pictured" complete the room but aren't shown in the image.

Paint

  • 11Not pictured

Rust-Oleum 332141-2PK Simply Home Interior Wall Paint, Gallon, Eggshell Pure White

Finish: Eggshell, Pure White

Why we chose it

We chose bright white walls to keep this compact bath feeling airy around the glass shower and give the high-window light somewhere to land. It comes pre-tinted, and the listing describes a low VOC, water-based, very low odor formula that's washable, a good fit for a room that sees steam every day.

Wall paint: The listing states "Low VOC" and gives no g/L figure. Its title includes "2PK" while the size shows 1 gallon, so confirm the quantity before ordering.

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Tile & Flooring

  • 9

Tenedos 3x12 White Handmade Look Ceramic Subway Tile, Glossy (Box Covers 5.5 Square Feet)

Finish: Glossy white ceramic, 3x12 in

Why we chose it

We love how glossy tile with a gentle handmade ripple bounces clerestory light around the shower.

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  • 10

Daltile Articulo 12 x 24 Glazed Porcelain Floor Tile, Matte (17.60 SQFT Per Carton)

Finish: Matte glazed porcelain, warm gray

Why we chose it

We chose large matte tiles to keep grout lines few and the floor calm and easy to care for.

Floor tile: The render carries this tile into the shower; check slip rating with your installer before using it on a shower floor.

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  • 12Not pictured

Custom Building Products WDG5-4 5 Lb White Dry Non-Sanded Tile Grout

Finish: White, non-sanded

Why we chose it

We chose fine white joints so the glossy subway tile in the shower reads as one calm, bright surface. The non-sanded formula suits the slim joints of glazed ceramic tile.

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Vanity & Sink

  • 1

KEIKI 30" Floating Bathroom Vanity, Wall-Mount Oak Wood, Integrated White Ceramic Sink, Push-to-Open Drawer, Pre-Assembled, Natural

Finish: Natural oak wood, white integrated ceramic sink

Why we chose it

We floated pale oak off the floor so the eye runs beneath it, keeping a compact bath feeling open. The integrated sink arrives attached.

Floating vanity: The render shows a black bar pull; the listing uses a push-to-open drawer with no handle.

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Fixtures

  • 2

FORIOUS Bathroom Faucet 1 Hole, Single Handle Vanity Faucet, Matte Black

Finish: Matte black

Why we chose it

We chose a slim matte black faucet to draw one clean line against white, tying the vanity to the shower trim.

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  • 5

SUMERAIN Matte Black Rain Shower System with Handheld Shower, Pressure Balancing Shower Mixer Valve

Finish: Matte black

Why we chose it

We chose a square rain head and a handheld in matte black, graphic against white tile and within reach of the bench.

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  • 6

Frameless Sliding Glass Shower Door, 56-60" W x 72" H, Brushed Nickel, 1/4" Glass

Finish: Clear glass, brushed nickel hardware

Why we chose it

We chose clear glass on a slim rail so daylight runs through the whole room instead of stopping at a curtain.

Sliding shower door: Brushed nickel hardware, not black.

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Toilet

  • 8

Bolina W2161RD One-Piece Toilet, Dual Flush 1.0/1.28 GPF, Elongated, 12-inch Rough-In

Finish: White ceramic

Why we chose it

We picked a smooth one-piece shape that's easy to wipe down, with a dual flush.

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Lighting

  • 4

ZAGO 24 Inch LED Indoor Linear Wall Sconces Set of Two, 3CCT Switchable & Dimmable, Matte Black, Hardwired

Finish: Matte black

Why we chose it

We flanked the mirror with two vertical lines of light for even light on the face, with switchable color temperature and dimming per the listing.

Linear wall sconces: Hotspot covers the pair (second at x 76%, y 30%).

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Mirror

  • 3

Round LED Bathroom Mirror with Lights, 30 Inch Circle Lighted Vanity Mirror, Anti-Fog

Finish: Frameless, backlit LED

Why we chose it

We hung a soft halo of light because we love how it makes a small room feel larger and warmer after dark.

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Hardware

  • 13Not pictured

USHOWER Matte Black Towel Bar, 24-Inch, SUS304 Stainless Steel

Finish: Matte black stainless steel

Why we chose it

We set a sturdy matte black bar just outside the shower to keep a bath towel within reach and repeat the black of the rain shower and sconces. It stands 3 inches off the wall so towels can dry.

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  • 14Not pictured

USHOWER Matte Black Toilet Paper Holder, Durable SUS304 Stainless Steel, Wall-Mounted

Finish: Matte black

Why we chose it

We matched it to the towel bar in the same matte black stainless, because we believe even the smallest detail should keep the room's rhythm. The open arm makes roll changes quick and one-handed.

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  • 15Not pictured

TASTOS Bath Towel Hooks Matte Black, 2 Pack Stainless Steel Robe Coat and Clothes Hook, Modern Square Style

Finish: Matte black

Why we chose it

We placed two square matte black hooks near the shower so robes and towels have a home and a small room stays tidy.

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  • 21Not pictured

Black Toilet Brush and Holder Set, Freestanding, Splash Protection

Finish: Black

Why we chose it

We chose a freestanding black brush and holder that matches the matte black shower and sconces.

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Ventilation

  • 20Not pictured

Miseno MBF080L 80 CFM Ultra Quiet 0.3 Sones Energy Star and HVI Certified Exhaust Fan with LED Lighting, White

Finish: White grille

Why we chose it

We wanted the air to clear gently after a hot shower, which helps keep moisture off the paint and grout. We chose this one for its whisper-quiet 0.3 sones and 80 CFM for a small to medium bath, and we love that it adds a warm 2700K LED glow with a night-light setting. The listing says it is ENERGY STAR rated and listed.

Exhaust fan with light: Ceiling-mounted, so not shown in the illustration. Hire an electrician and size the fan to your room; 80 CFM suits small to medium baths per the listing.

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Textiles

  • 17Not pictured

Mindow 2Pcs Waffle Hand Towels for Bathroom, Cotton Waffle Weave, 13 x 29 in

Finish: Off-white cotton waffle

Why we chose it

We wanted a light cotton waffle weave to bring texture to all that smooth tile, and it dries quickly in a steamy room. We love how the off-white tone sits beside pale oak.

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  • 19Not pictured

SUPERIOR Cotton Hand Towel Set, Zero Twist, Waffle Border, Set of 6, Ivory

Finish: Ivory cotton, waffle honeycomb

Why we chose it

We kept a second towel in mind with the same soft waffle texture: ivory zero-twist cotton with a hanging loop, and a set of six so a fresh one is always ready.

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  • 22Not pictured

White Classic Luxury Black Bath Mats 22x34, 2 Pack, [Not a Bathroom Rug]

Finish: Black

Why we chose it

We laid two black mats — one at the vanity and one at the shower exit — for a soft, absorbent footing.

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  • 25Not pictured

6 Pack Wash cloths, 100% Cotton Washcloths, 12x12 Inch, White

Finish: White

Why we chose it

We added a white 6-pack of cotton washcloths so the shower has soft face cloths ready.

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Decor

  • 7

GREENTEAK 22" Premium Teak Wood Shower Bench with Shelf & Handles, Natural

Finish: Natural teak

Why we chose it

We added warm teak because it feels at home around water: a small spa-like place to sit, or to set down a bottle.

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  • 16Not pictured

Bico Matte White Ceramic 12oz Soap Dispenser, with Removable Pump

Finish: Matte white ceramic

Why we chose it

We chose matte white ceramic because it looks soft and quiet on the counter. We like the wide pump top and the wide mouth, which makes refills simple.

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  • 18Not pictured

DUZYXI Artificial Sansevieria Plant 16" with Ceramic Pot (Green)

Finish: Green faux foliage, frosted ceramic pot with white stones

Why we chose it

We added a small upright cluster of green to soften all the hard surfaces, one that asks for no water or sun. We paired it with a frosted ceramic pot so the vanity stays calm.

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  • 23Not pictured

GE Bathroom Scale for Body Weight, Digital Smart Accurate 400 lb Weighing

Finish: Digital bathroom scale

Why we chose it

We added a precise digital scale for everyday weigh-ins beside the vanity.

Bathroom scale: listing title does not state a color; confirm the finish on the product page before ordering.

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  • 24Not pictured

Mind Reader Slim Laundry Hamper with Lid, 40L Clothes Basket, Linen Design, Plastic, Black

Finish: Black

Why we chose it

We tucked a narrow 40L black hamper with a lid into this compact ADU bath so laundry stays out of sight.

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  • 26Not pictured

SANRUI Acrylic Rectangle Tissue Box with Snap Bottom, Matte Black

Finish: Matte black

Why we chose it

We added a matte black acrylic tissue box to match the sconces and shower finish.

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Notes

  • Toilet brush & holder, Bath mats (2-pack), Bathroom scale, Slim laundry hamper with lid, Cotton washcloths (6-pack), and Matte black tissue box cover aren't shown in the illustration.
  • Bathroom scale: listing title does not state a color; confirm the finish on the product page before ordering.
  • Hand towels (second option): an alternative to our first towel pick, ivory rather than off-white and 30 x 16 in.
  • Wall paint: The listing states "Low VOC" and gives no g/L figure. Its title includes "2PK" while the size shows 1 gallon, so confirm the quantity before ordering.
  • Towel bar, hooks, toilet paper holder, soap dispenser, hand towels and faux plant aren't shown in the illustration; they're suggested to complete the room.
  • Floating vanity: The render shows a black bar pull; the listing uses a push-to-open drawer with no handle.
  • Linear wall sconces: Hotspot covers the pair (second at x 76%, y 30%).
  • Sliding shower door: Brushed nickel hardware, not black.
  • Floor tile: The render carries this tile into the shower; check slip rating with your installer before using it on a shower floor.
  • Amazon sets product details, prices and availability, and they may change. Product finishes in the rendering are approximate.
  • Product selections are design suggestions only. Check local codes and permit requirements with your installer before you build.
  • Exhaust fan with light: Ceiling-mounted, so not shown in the illustration. Hire an electrician and size the fan to your room; 80 CFM suits small to medium baths per the listing.

Amazon sets product details and availability, and they may change.