Curved Cantilevered Staircase Design & Build

At New York Floating Stairs , curved cantilevered staircases are the most complex work we do — and the most rewarding when the geometry comes together correctly. The challenge is that every curved stair is different. Radius, rise, run, and headroom clearance all interact differently depending on the space.

NYC townhouses are a natural fit for curved floating stairs. The typical layout — tall ceilings, stacked floors, visible entry from the front door — creates the spatial conditions where a curved staircase reads as an architectural focal point rather than just a means of vertical circulation.

Curved floating stairs require more detailed engineering than straight systems. Tread widths vary across the sweep, the structural spine carries rotating loads, and each tread anchors into a curved wall plane that needs to be mapped and verified in the field. We approach this work with careful preconstruction planning so the install proceeds cleanly.

DOB documentation for curved cantilevered systems is more involved than standard floating stairs. We prepare the full engineering package in-house, including curved-span load calculations and connection details at every unique tread geometry.

Material options for curved systems follow the same range as straight stairs — hardwood, steel, glass treads — but fabrication lead times are longer and tolerances are tighter. We factor that into project scheduling so expectations are realistic before work begins.