A primary bath built around one long soak

A cramped 1990s bath — carpeted, if you can believe it — became a curbless, heated-floor retreat behind the original transom window.

Location
Ansonborough, Charleston, SC
Scope
Primary bath, water closet, closet reconfiguration
Duration
10 weeks construction
Investment range
$52,000 – $68,000
Fig. 1 Ansonborough, primary bath — after. 2025.

The project · Ansonborough, Charleston · 2025

Primary bath, water closet, closet reconfiguration. 10 weeks construction.

The before photograph gets a laugh at every consultation we show it in: builder-grade oak laminate, a fiberglass tub-shower combo, and — the detail that always lands — carpet, installed sometime in the early 1990s, six feet from a shower.

We reclaimed four square feet from an oversized closet to make room for a curbless shower with a linear drain, finished in a large-format porcelain that reads like poured concrete but never needs sealing. Heated floors run on a schedule tied to the house's thermostat, so they're warm by the time anyone's feet hit them.

The vanity is a single floating slab of White Macaubas quartzite over a navy-lacquered base, chosen specifically to read as furniture rather than a fixture. The plumbing — a genuine complaint on the original bath, audible through the shared wall to the bedroom — was rerun to isolate it from the framing.

The original transom window above the tub, painted shut for as long as anyone could remember, was restored to open. It is now the only bathroom in the house anyone lingers in.

Before, and after

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A primary bath with a navy floating vanity, marble counter and a glass curbless showerA plain builder-grade bathroom vanity in laminate oak against a sage wall
1990s builder-grade bath
Curbless primary bath, after
Fig. 2 Ansonborough, tub detail.

What it’s made of

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White Macaubas quartzite

Floating vanity slab, waterfall edge.

A freestanding soaking tub beneath a transom window in a charcoal-tiled bath

We lived in the house for the first ten weeks. Camille planned the crew's hours around our toddler's naps without us having to ask twice.

Priya Anand, homeowner

Colophon

Alder & Stone Design-Build is a design and construction studio at 171 Meeting St, Studio 3, Charleston, SC 29401. The studio keeps its own crew and a millwork shop in North Charleston. Open Monday to Thursday, 9 am – 5:30 pm; Friday, 9 am – 4 pm; Saturday, 10 am – 2 pm; closed Sunday. Telephone (843) 555-0118; correspondence to studio@alderandstone.com.

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