Island Bath Studio

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10 Master Bathroom Renovation Ideas for Long Island Homes

2026-03-12 7 min readBy Angela Ferreira, Founder & Lead Designer
Luxury master bathroom renovation on Long Island

Master bathrooms are the one room where Long Island homeowners will spend real money. After 200+ master renovations across Nassau and Suffolk, here are the 10 ideas that consistently land.

1. Curbless walk-in shower

The single biggest shift in master bathrooms over the past five years. Remove the 4" curb. Tile flows from the bathroom floor straight into the shower. Aesthetically cleaner, physically easier to enter, and aging-in-place friendly.

Requires a linear drain (Schluter Kerdi-Line is our default) and a sloped substrate under the tile. We install it on about 80% of master builds now.

2. Freestanding soaking tub

If you have floor space, a freestanding tub is the focal point of the room. Acrylic options run $800–$2,500 (Kohler, American Standard, MTI). Cast iron or enameled steel run $3,000–$8,000 (Victoria + Albert, Kohler Bellwether).

Place it against a window if possible. A freestanding tub with a Long Island sunset view is worth a lot on resale.

3. Double vanity with quartz top

72" or 84" double vanity, two undermount sinks, single slab quartz top. Quartz (Caesarstone, Cambria, Silestone) is the Long Island default because it doesn't stain like marble and doesn't scratch like honed granite. Cost: $3,500–$8,000 installed.

4. Heated porcelain floor

NuHeat or Ditra-Heat electric floor warming. Controlled by a programmable thermostat — warm for morning routine, off during the day. Adds $1,200–$2,500 to the project. Homeowners love it through Long Island winters.

5. Floor-to-ceiling tile

Full-height tile (not just a backsplash or wainscot strip) makes the space feel larger and more intentional. Works best with large-format porcelain (24x24, 24x48) or slab-look panels. The grout lines disappear at height.

6. Frameless glass shower enclosure

3/8" tempered glass, custom-measured after tile is in, minimal hardware, no aluminum frame. The shower disappears visually — lets the tile work speak. Cost: $1,800–$3,500 depending on size.

7. Custom lighting plan

Layered lighting: recessed cans for overall illumination, sconces or backlit mirror for face lighting at the vanity, pendant over the tub, under-cabinet toe-kick lights for nighttime navigation. Dimmable on three zones. Total electrical cost: $1,500–$3,500.

8. Smart mirror

Anti-fog defogger, integrated LED lighting, touch controls for Bluetooth audio and weather display. Kohler Verdera and Seura are the premium options ($800–$2,500). A great “wow” feature that doesn't cost much in the context of a full remodel.

9. Wet room layout

For very large masters: the tub and shower share a single waterproofed zone with a single drain system. No separation between them. Extremely modern, very European. Requires full Schluter waterproofing and proper slope design. Cost premium: $2,500–$5,000.

10. Private water closet

Partition off the toilet into its own small room with a pocket door. Gives couples privacy when one is getting ready while the other is using the toilet. Adds cost (framing + door + additional light/exhaust) but is the #1 post-renovation feedback we get: “the water closet changed our marriage.”

Budget anchors

Entry master (under $50K): single vanity, walk-in shower with tile tub surround keeping the tub, quartz top, standard fixtures, basic lighting.

Mid master ($50K–$75K): double vanity, curbless walk-in shower + separate freestanding tub, heated floor, frameless glass, custom lighting.

Premium master ($75K+): above plus marble or slab tile, smart mirror, wet room or water closet, custom vanity, premium fixtures (Grohe, Dornbracht).

Our advice

Pick 3–4 of these that matter most to you. Don't try to do all 10 — it'll blow the budget and the space will feel overdone. We'll help you prioritize at the estimate.

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