Floating concrete stairs — sculpted, structural, striking.

What we mean by "floating"

A floating stair appears to cantilever from a single wall or single spine, with no visible side stringers or under-supports. Each tread looks suspended in space. Achieving that look in concrete requires a buried structural element (usually a cantilever spine beam, or treads anchored deep into a structural wall) that's hidden in the finish.

It's one of the most visually striking architectural moves available in a home — and the most technically demanding concrete element we deliver.

How we approach it

• Engineering input is non-negotiable. We coordinate with your structural engineer from sketch design — the structural concept dictates everything that follows.
• Bespoke formwork. Floating stairs cannot be built from off-the-shelf form. We build custom formwork for each project.
• Single continuous pour where possible. A floating stair cast in one pour has no cold joints visible in the finish. Pour days are highly choreographed.
• Architectural finish from the form. The form face is your finish — there's no patching after the fact on a feature stair. Form quality is what determines the result.

Lead time and cost

Architectural floating stairs are not a quick job. From engagement to finished stair is typically 6–12 weeks depending on engineering, formwork fabrication and pour scheduling. Cost varies enormously by complexity — from around $25k for a simple 12-tread cantilever to $80k+ for a curved, multi-flight architectural feature.

Standards we work to

• AS 3600 — Concrete
• AS 1170 — Structural design (cantilever loading)
• NCC stair geometry (rise, going, balustrade)

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Common questions