Skip to main content
RoomSketch3DRoomSketch3D

How to Add Stairs to a Floor Plan: Rise, Tread, Width + the 3 Shapes Explained

The complete staircase tutorial for RoomSketch3D — from the six terms that define a real staircase (rise, riser, tread, width, length, direction) to the three shapes (straight, L-shaped left or right, U-shaped switchback). Drop it in from the Build panel's Structural tab, set the dimensions in the inspector, position it on the plan, and walk up it in the 3D view to check head clearance and the approach.

4 minUpdated 2026-10-28
Read the full step-by-step guide

What this video covers

  1. 1Pick Stairs and a shape, then tap the foot and the top
  2. 2Connect it to the floor above
  3. 3Learn the six terms (the anatomy of a staircase)
  4. 4Pick the shape — Straight, L (left or right), U, or Spiral
  5. 5Set the dimensions in the stair's panel
  6. 6U-shaped stair around a wall: set the Gap (or tap Fit to wall)
  7. 7Position it on the plan
  8. 8To delete a staircase: select it on its own floor
  9. 9…then tap the red trash button
  10. 10Walk up it in 3D

Prefer to read along? See the full written walkthrough with screenshots.

Start designing your room

Draw it, furnish it, walk through it in 3D — on web, iOS, and Android.

Open RoomSketch3D

One-time purchase · No subscription · Web, iOS & Android