ZerothCAD
Plan decks, roofs, stairs, and 3D workflows in one platform
A browser-native construction design platform that takes you from first concept to field-ready output. Connected workspaces for deck planning, roof framing, stair design, and precision 3D modeling — with linked revisions and document generation built in.
Modules
Start with one module and expand as your project grows. All modules share a linked project workspace.
Multi-level deck design with integrated framing and takeoff
- ·Any-shape perimeter layouts — rectangles, offsets, angled edges, custom footprints
- ·Multi-level elevation-aware connected zones
- ·Attached and freestanding configurations
- ·Integrated joist, beam, post, and railing framing
- ·Direct stair and covered-roof assembly linking
- ·Material lists, cut lists, and supplier-ready quantity outputs
Footprint-to-framing roof packages with per-side pitch control
- ·Gable, hip, shed, and asymmetric roof conditions in one project
- ·Per-side pitch and edge-condition control
- ·Rafter, ridge, hip, valley, and jack member inspection
- ·Dormer and skylight planning
- ·Automated sheathing layout with area calculations
- ·Real-time geometry updates on pitch or opening change
Straight, spiral, and winder stairs with fabrication outputs
- ·Straight, spiral, and winder stair configurations
- ·Fabrication-ready output documents
- ·Links to deck edges and landing conditions
- ·Cut schedules and material lists
Precision CAD modeling with revision-safe operations
- ·Freeform precision CAD modeling in the browser
- ·Revision-safe operations with coordinated assemblies
- ·Project-linked outputs that update across modules
Output deliverables
Blueprint-style documentation ready for permit submission.
Construction-ready packets for on-site teams.
Itemised material lists and cut schedules.
Pricing and quantity data for estimating.
Redacted review snapshots for client visibility.
Export-ready formats for ordering and procurement.
Platform design
Outputs stay in sync across modules. When upstream geometry changes, affected documents are flagged automatically.
Fine-grained access controls and audit visibility for project teams of any size.
No download or installation. Full project storage and editing in a single web workspace.
Who it's for
Browser-native · No install
From first concept to field-ready output
Start with one module. Link your deck, roof, and stair projects as complexity grows. Export field packets, blueprints, and takeoffs when ready.