3D Stair Design + Code Compliance

StairBuilder

Design code-compliant stairs in seconds. Real-time IBC, IRC, and ADA checks, interactive 3D visualization, and auto-generated bill of materials — all from your phone.

$2.99 One-time purchase

Coming Soon to Google Play

StairBuilder 3D stair model with IBC compliance and BOM

Design Stairs That Pass Inspection

Built for contractors, detailers, and architects who need it right the first time.

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Code Compliance

Real-time checks against IBC 2021 (commercial), IRC 2021 (residential), and ADA 2010 (accessible). Instant pass/fail on every parameter.

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Interactive 3D View

See your stair in full 3D with orbit controls. Treads, risers, stringers, handrails, and balusters all rendered in real time as you adjust parameters.

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Auto Bill of Materials

Complete BOM generated automatically — treads, risers, stringers, handrails, balusters, newel posts, and landing platforms with dimensions and quantities.

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Multi-Flight Support

Straight run, L-shape, or U-shape configurations. Landing depths calculated per code. Max flight rise enforced automatically.

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Precision Calculations

Actual riser height, total run, stringer length, stair angle, and the 2R+T comfort rule — all computed to 3 decimal places.

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Export BOM

Export your complete bill of materials as a text file or share directly from the app. Includes all dimensions and code compliance status.

Codes Checked

Every parameter validated against the code you select.

IBC 2021

Commercial buildings. Riser 4"–7", tread min 11", width 44", headroom 6'-8", max flight rise 12'.

IRC 2021

Residential buildings. Riser max 7.75", tread min 10", nosing 3/4"–1.25" required, max flight rise 12'-7".

ADA 2010

Accessible design. Riser 4"–7", tread min 11", nosing max 1/2" (beveled), 60" landing for wheelchair turning.

This tool checks dimensional compliance only. It does not verify structural load capacity, fire ratings, material specs, or local code amendments. Always consult your local building authority before building.