Author the model. Carry the whole job on it.
An IFC-native BIM authoring tool and AEC lifecycle platform — model a building from scratch, take it to a permit-ready construction set, check it against the adopted code, and hand it over field-verified. One model, keyed by GlobalId. Open, self-hosted, no per-seat license.
Recently shipped
In-browser authoring came of age
The last stretch turned the web app from a strong reviewer into a genuine modeling tool — draw, slope, mesh, and undo real geometry, then stock the site with properly-classified content.
automatic axis inference
As you place a point it snaps on-axis, parallel, or perpendicular to the last edge — clean lines without holding Shift.
v0.3.299Model undo / redo
Every edit is a new versioned IFC; undo restores a prior version and republishes — GUID-stable, so pins, RFIs and clashes survive.
v0.3.298Sloped-top walls
Parapet-slope, shed and gable walls — a trapezoidal profile extruded across the thickness, so every geometry engine renders it.
v0.3.304Procedural mesh
Author an element straight from a raw triangle mesh for geometry the parametric recipes can't express — verts + faces in, valid fragment out.
v0.3.305Site content library
Drop cranes, hoists, fencing, sanitary units, furniture and planting — each auto-classified into the right IFC class + phase; logistics time-phase on the 4D slider.
v0.3.306Sandboxed code hatch
An AST-sandboxed ifcopenshell escape hatch (off by default, red-teamed hard) for the one-off geometry the fixed recipes don't cover.
v0.3.300Recently shipped
Derive the deal, the buyout and the FM register straight from the model
The latest wave turns the model — the source of truth — into decisions the deterministic way: computed, not reconstructed by AI. Sweep the massing for yield, reconcile the buyout per cost code with a one-click fix, and pull the FM register, the equipment RFQ and its spec-conflicts out of the IFC by class.
Massing optioneer
Sweep the zoning-envelope levers — floor-to-floor, core efficiency, coverage strategy, unit mix — over the deterministic program engine, score each option on a transparent yield-on-cost proforma, and rank them with a cost-vs-profit Pareto frontier. Pick a massing to author; no AI, no doc-scanning.
v0.3.576Cost-code margin + one-click fixes
Reconcile budget vs. committed vs. actual vs. billed per cost code into a projected buyout margin and cost variance, flagging over-committed / over-budget codes worst-first — and pair each flag with a one-click action straight to the records behind it, instead of a passive number.
v0.3.573 · v0.3.577Asset register + equipment RFQ
Derive the maintainable-asset register (the FM handover, one-per-GUID) and the procurement equipment schedule (RFQ line-items rolled up by type with a representative spec) from the IFC by class, and cross-check the modelled Pset values against the specified requirements — the scheduled-vs-specified conflict catch.
v0.3.574 · v0.3.580–581The platform
What it already does, end to end
Design & feasibility
- Generate a real IFC building from a zoning envelope
- Test Fit — unit-mix, parking solver, yield-on-cost optimize
- Development proforma with underwriting guardrails
Author & document
- Model from a blank IFC → grids, levels, walls, families, MEP
- Full per-discipline NCS drawing set — plans, sections, details, schedules
- Dated AIA issuances (SD → DD → CD → Permit → Bid → Construction → Record)
Coordinate & build
- Clash intelligence, code compliance, model-health scorecard
- Config-driven GC portal — RFIs, change orders, pay apps, closeout
- CPM + takt + 4D, lean pull-planning, model-based Earned Value
Turnover & operate
- Field-verified as-built dimensions, variance & manufacturer record (LOD 500)
- COBie turnover, facility-condition index, reserve & capital planning
- Disposition — listing kit, tri-approach appraisal, RESO-aligned
Foundations