Design Detail: A Spiral Staircase Creates a Sculptural Statement

Wrapped around a pneumatic elevator and spanning three floors, this staircase in a custom North Carolina home uses a curved I-beam to maintain structural integrity without sacrificing on design
April 3, 2026
2 min read

Story at a Glance:

  • The staircase is inspired by flowing water, featuring smooth, curved steel lines and open treads illuminated by LED tape lights.
  • A custom-fabricated curved I-beam provides the structural backbone, ensuring safety and stability across three floors without compromising design.
  • Rather than fighting against it, the staircase was intentionally designed to complement the home's glass elevator

Welcome to Design Details, where we look at a standout project feature and explore what it took to make it special.


The Detail:

Set on a forested lot in Flat Rock, N.C., a custom home known as Hidden Falls features a spiraling staircase that unifies the home while providing a visual centerpiece on each of its three floors.

Built by Asheville, N.C.-based custom home builder Living Stone Design + Build with designs from Knoxville, Tenn.-based architecture firm MossCreek, the goal was to stay true to the home’s open floor plan, create visual interest, and most importantly, make the stairs structurally sound without compromising on aesthetics.

Creating a Visual Centerpiece:

At the center of the design sits a glass elevator. Rather than compete with the elevator, the project team designed the stairs to complement the elevator's rounded shape and transparency. 

The shape of the staircase takes inspiration from the flowing form of cascading water, with smooth, curved steel lines and open steps that create a balance between solid structure and transparency. LED tape lights on each stair tread help enhance the openness of the design. 

The staircase also adds visual interest to the exterior of the home. With tall, vertically-oriented windows on each floor, the staircase can be seen from the outside when coming up the home's long drive.

Overcoming the Structural Challenge:

Having the stairs span three floors while trying not to overhwelm the elevator posed a unique challenge that required precise engineering. In the end, the project team used a custom-fabricated curved rolled-form I-beam to form the backbone of the stairs. This allows the staircase to remain visually light and open while safely carrying heavy loads. Heavy timber treads further the strength and stability of the steps.

By prioritizing structural ingenuity and planning the staircase around the elevator, the project team was able to turn the home’s main artery into an elevated design statement. 

This home was awarded Gold for Best Design Detail in The Best in American Living Awards (BALA) 2025, announced at the International Builders' Show in February.

About the Author

Catherine Sweeney

Catherine Sweeney is the associate editor for Pro Builder and Custom Builder, where she creates both digital and print content, including Pro Builder’s daily e-newsletter and various news stories for both brands. Before joining Endeavor, she began her career in local journalism, later pivoting to the commercial real estate industry where she worked for several years as a reporter and editor.

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