SynopticLex
FR/EN

Regulatory intelligence for construction

We make building regulation executable.

SynopticLex encodes French building law into an executable engine and brings it into the daily tools of architects, developers and inspection offices.

Explore the products Talk to the team
LIVELex ChatLIVELex DesignR&DLex Linter

01The problem

A dense body of law, absent from the tools where design happens.

01

Complex & misread

Highly technical rules, routinely misunderstood, including by architects and real-estate investors.

02

Absent from CAD

The law is nowhere quantified inside CAD or BIM tools. Design happens blind to the rules.

03

Paid for late

The gap surfaces downstream: mis-estimated projects, permit rejections, weeks of rework.

The result: hundreds of hours of manual compliance work per project, and the rules still aren't in the software.

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.

03The 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
Explore Lex Design
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

04The services

The engine, operated by experts.

Beyond the software, our experts put the SynopticLex engine to work on your projects.

Regulatory project audit

Accessibility · Fire safety

Your project screened for accessibility and fire safety: findings located on the drawings, sourced article by article, ranked by criticality, before filing or works.

Safety & accessibility notices

Critical review · Full drafting

Critical review or full drafting of your fire-safety and accessibility notices, ready for filing: building permit or ERP works authorization.

BIM model audit

IFC · Revit · Archicad

Your 3D IFC / BIM model screened against the encoded law: gaps located element by element, article cited, proposed corrections.

Explore the services

05Who we serve

Built for everyone the law touches.

The same encoded law, delivered to each actor at the point where regulation shapes their decisions.

Architects

The law shows up at every stage of a project. SynopticLex keeps it at hand, from sketch to permit.

Developers & asset managers

Law encoded upfront: sharper estimation, higher profitability, fewer costly surprises later.

Engineering & inspection offices

An assistant for study and validation: faster review, defensible conclusions, article in hand.

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