SynhedraFree during the beta
Stop rebuilding the same building in every tool.
On the right is a sheet of tracing paper. Drag one edge and the code envelope in the section, the coverage, the FAR and the height verdict all change together, and every number cites its source. Not a video: an illustrative calculation in plain SVG. AI hands back walls and rooms you keep editing, and 2D and 3D are one model.
- 1 Drag the north edgeChanges the building depth
- 2 Drag the roofAdds or removes floors in the section
- 3 Watch it passred ✕ → amber ! → green ✓
Free during the beta, nothing to install, no account needed. Geometry and checks run in your browser; signed out, designs stay in this browser; signed in with cloud storage on, they sync to your account. Only sharing, co-editing and AI send data out.
Drag the north edge (depth) or the south edge (setback) · keyboard: Tab to a grip, arrows
Site 20 × 24 m with an 8 m road to the south; drag the north edge for depth, the south edge for setback.
Drag the roof to change floors · red hatch = above the Art. 164 slope plane
The demo uses Taipei Residential 2 (35% / 120%), Residential 3 (45% / 225%) and Building Technical Regulations Art. 164 (H ≤ 3.6 × (Sw + D)) as illustrative rules; it is not a code review. In the product every verdict cites its article and verification date.