Products

The law encoded once. Served wherever you work.

One symbolic engine of French building regulation powers three products: ask the law, design compliant, and check your models.

01The products

One legal engine, a suite of tools.

LIVEThe regulatory copilot

Lex Chat

Ask French building law in plain language. Grounded answers, sourced article by article.

Automatic ERP classification
Occupancy & category computation
Accessibility compliance
Sourced fire-safety answers

Explore Lex Chat

Lex ChatERP classification

A 180-seat restaurant with takeaway sales: which ERP classification, which category?

Multi-activity establishment: type N (dining) + M (retail), main activity N. Public occupancy retained: 180 people → 4th category.

Art. R. 143-19 CCHArt. GN 1Arrêté 25/06/1980

And does staff headcount matter?▍

LIVEYour concept, compliant

Lex Design

From an outline and a brief to a floorplan compliant by construction. Optimization guarantees the rule; you keep the authorship.

T1 to T5 unit types
Built-in accessibility rules
12-axis quality score
DXF, SVG and PDF exports

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T3 · 73.0 m² · compliantSelected plan

T3 apartment floorplan generated by Lex Design: living room, kitchen, two bedrooms, bathroom, WC and balcony, dimensioned and furnished

R&DThe BIM model linter

Lex Linter

Run any IFC / BIM model against the law: located finding, cited article, suggested fix.

IFC / BIM model analysis
Findings located in the model
A cited article for every gap
Suggested fix

Explore Lex Linter

residence-les-tilleuls.ifc2 gaps · 214 rules

Entrance door, unit A-302: 0.80 m
0.90 m required · Order of 24/12/2015, art. 12
Door → staircase distance: 43 m
≤ 40 m required · CCH, 3rd-family fire safety
Width of shared circulations
1.20 m measured · compliant
Adapted parking spaces
5% of total · compliant

02The approach

Not a model that learns the law. An engine that enforces it.

Compliance becomes reliable and usable only when the rule is encoded as an executable engine, applied to structured data (IFC), and surfaced inside the tools professionals use every day.

Encoded French regulation

Executable, growing rule by rule: an accumulating asset, not a one-off cost.

Technical-inspection validation

Every rule validated in-house with technical-inspection expertise. No “wrong rule” risk.

Self-generated corpus

Our generator produces the compliant structured data no one else has.

The SynopticLex engine

One asset, the encoded law, powers the whole suite.

Lex Chatask the law
Lex Designdesign compliant
Lex Lintercheck the model

Under the hood

Artificial intelligence

Generative and vision models: spatial reasoning, the professionals' language, visual critique of plans.

Operations research

Constraint optimization: exact geometry and proven solutions, not approximations.

Symbolic engine

The legal rule encoded: executable, deterministic, traceable article by article.

AI proposes, operations research disposes, the encoded law decides.

Our ambition

SynopticLex is to the building trade what code copilots are to developers.

We encode housing first, then public-access buildings. France is the wedge, not the ceiling: the engine is standards-agnostic, and each new market is a re-encoding, not a rebuild.

Talk to the team Our vision