Architecture
$30*
Ramp Studio
Draw a line, get a code-checked ramp — railings included.
- 50 presets, 5 categories
- 8 railing types
- 312 tests, SU 2021-2026
SketchUp 2021–2026v1.0.0
StairFun Studio
Hand-drawing every tread and riser
Pick a form, click a start point and a direction, type the floor height. Structure, railing, labels and the R-code report come out as one editable component.
- 8 forms + ramp
- 44 live code rules
- 30 risers under 1 s
Not on sale yet
This one is not listed on Gumroad yet. Leave your address and you will hear the moment it is.
SketchUp 2021 · SketchUp 2022 · SketchUp 2023 · SketchUp 2024 · SketchUp 2025 · SketchUp 2026 · v1.0.12
The same job, twice.
Drag me
With the plugin
40 sec
Pick a form, click twice, type the floor height
By hand
1 h 15 m…
Counting risers, then drawing every tread by hand
Drag me
- 01
Two Clicks, One Stair.
Start point, direction, floor height in the VCB. Treads, stringer, railing and numbered labels arrive as one component.
- 02
The Code Checks Itself.
44 rule IDs run live while you set the stair. Anything off turns red or yellow, and one click pulls it back into line.
- 03
Change It, Print It.
Reopen the component, change one number, and the stair rebuilds in a single Ctrl+Z. Riser schedule and cut list export themselves.
How much time could this save you?
stairs per project
Estimate based on a typical workflow. Your mileage will vary - usually upward.
Saved every month
0,0hours
Saved every year
0 hours
0 work days
You just found 77 hours of your life.
Not on sale yet
The technical bit
For the people who read the manual first.
- Works with
- SketchUp 2021 · SketchUp 2022 · SketchUp 2023 · SketchUp 2024 · SketchUp 2025 · SketchUp 2026
- Version
- v1.0.12
- Interface languages
- tr · en
- Eight stair forms plus an accessible ramp: straight, L-turn, U-turn, centre-spine spiral, curved-stringer circular, cantilevered/floating and fire escape - each a card you click, not a setting you hunt for.
- Regulation engine with 44 rule IDs in the R-01..R-73 range, written to Planli Alanlar Imar Yonetmeligi Md.32/36, TS 9111, BYKHY, DIN 51130, EN 1991-1-1 and TBDY; red and yellow badges appear as you type, and one click makes the stair compliant.
- Calculator core solves n = ceil(H/a_max), a = H/n, b = 630 - 2a, drops an intermediate landing automatically past 16 risers, and checks 2100 mm stairwell headroom while solving slab thickness.
- Eight building-class presets - villa, housing, public, with lift, accessible, fire, exterior, service - each swapping the limits the engine enforces.
- Winder engine with three profiles (pole, quarter-circle, proportional) that never lets the inner tread edge fall under 100 mm and raises the winder count from 8 to 12 on its own.
- Five structural systems (RC sloped soffit at t = max(120, L/25), steel stringer, timber, wall-anchored cantilever with a hidden steel sleeve, single-spine mono-stringer), five finishes and five railing types, including the 700/900 double handrail for the accessible class.
- Placement happens in the model: first click sets the start, second the direction, Tab flips the side, arrows change the turn, the VCB takes the floor height, and the upper slab is detected for H.
- Identical parts are deduplicated into shared component definitions by MD5 signature, so editing one tread updates every matching tread - and a parameter change regenerates the whole stair in one Ctrl+Z.
- HTML print report (R-code compliance table, riser schedule, cut list, engineering notes), CSV cut-list export, and a 9:16 assembly animation rendered to H.264 MP4 through ffmpeg with a pure-Ruby MJPEG-AVI fallback.
- No external gems: its own pure-Ruby solid kernel and zip builder, a 30-riser stair with railing solids in under a second, 114 tests green, and a built-in error console logging to Plugins\stairfun_log.txt.
Still being built
Shipped, and what is next.
Shipped
- Phases 0-10 complete: eight stair forms, the accessible ramp and all five structural systems build from the panel
- Regulation engine live in the model - 44 R-codes badged as you change a parameter, with a one-click compliance fixer and eight building-class presets
- Parts became real geometry: shared component definitions by MD5 signature, connection fittings, per-tread edge chamfer and the mono-stringer spine (v1.0.12)
- 9:16 assembly animation with a constant-speed 360 degree orbit, H.264 MP4 through ffmpeg and a pure-Ruby AVI fallback, rendered asynchronously with progress and cancel
- Licence layer removed in v1.0.2, built-in error console with a log file next to the plugin, 114 tests green across calc, gen and build specs
Next
- Own solid-boolean stairwell cut, so the slab opening works without SketchUp Pro's solid tools
- Menu and toolbar titles that switch language without restarting SketchUp
- Rule presets for codes outside Turkey, and a third interface language alongside Turkish and English
Before you ask
Desktop SketchUp 2021 through 2026 - the extension declares its supported range as 2021..2026 and installs as an .rbz from Extension Manager. Older versions and the browser-based free version are out, because it needs the Ruby API. Everything works the same in Pro and non-Pro desktop installs except the stairwell slab cut, which relies on Pro's solid tools. Interface in Turkish and English.
No. The licence layer was deliberately removed in v1.0.2, so there is no key to enter, no activation server to reach and nothing that phones home - install the .rbz and it works offline. Updates arrive as new builds; 13 have shipped so far, v1.0.0 through v1.0.12. The $35 is a suggested price while the extension is in beta.
It is beta, so four things are worth knowing. The stairwell opening uses SketchUp Pro's solid tools - without Pro the stair still builds, the slab just stays closed. Menu titles only pick up a language change after SketchUp restarts. The MP4 export needs ffmpeg on the machine; without it you get the pure-Ruby AVI fallback. And the rule set is written to Turkish regulations plus TS 9111, DIN 51130 and EN 1991-1-1, so outside Turkey treat the badges as a sanity check rather than a stamp of approval.
Worth reading
The Best SketchUp Plugins, Sorted by the Job You Hate
Twenty SketchUp tools sorted by the job you are sick of doing — walls, openings, floors, stairs, facades, roads, take-offs. Real numbers, and a plain word on what is still unfinished.
Read →
Stairs and Ramps in SketchUp That Pass Review
A stair is quick to draw and expensive to redraw. Here are the numbers a reviewer actually checks, and how to model stairs and ramps so a floor height change costs one edit.
Read →
Pairs well with
Architecture
$45*
ArchiFlow Studio
Draw the plan once. The building keeps up with every edit.
- 5 studios built in
- 150 ms auto-rebuild
- SketchUp 2021-2026
SketchUp 2021–2026v1.61.0
Flooring
$30*
FloorStudio
Every board cut to the room, counted and exported.
- 13 patterns
- SketchUp 2021-2026
- CSV take-off
SketchUp 2021–2026v3.2.1-stability.1