The description report is one of the key documents of a building permit: it explains the project, its regulatory compliance (zoning code, construction standards, energy code), and its context fit. Writing it is time-consuming and repetitive — many sections are standardized. AI allows rapid production of the framework while respecting requirements, the architect enriches with specific choices and expertise. This guide presents the compliant workflow.
Characteristics: area, height, materials, amenities, energy performance. Context: plot, environment, heritage constraints, ABF review. More complete = better report.
Zoning code (zone, height, floor area ratio, setback, exterior appearance), easements, historic monuments, risk prevention plans. AI can help analyze zoning code but architect validates.
Standard structure: project presentation, environmental integration, zoning compliance, energy performance, accessibility, fire safety. AI rapidly produces clean draft.
Architect brings: specific justifications, architectural intent, material choices with reasoning, singular constraint management. This is what gives the report value.
Every reference (zoning article, construction standard, energy code) must be verified. An error can cause permit denial. Validation remains human and commits the architect.

Claude Opus 4.5 : modèle premium d’Anthropic pour code, agents et tâches complexes en entreprise.
Why : Le meilleur sur les notices techniques nécessitant rigueur réglementaire. Reasoning supérieur sur les conformités complexes.

Assistant conversationnel d’Anthropic axé sécurité et contexte long. Excellent pour rédaction, analyse, résumés, code et agents. Interface claire, bons résultats en français.
Why : Excellence sur la rédaction structurée en français professionnel architecturale.

Assistant de recherche IA qui fournit des réponses sourcées et vérifiables en temps réel.
Why : Pour la veille réglementaire (RE2020 mises à jour, jurisprudences urbanisme, DTU récents) avec sources fraîches.
Does AI respect RE2020?
For principles: yes widely. For precise requirements (Bbio, Cep, DH, carbon indicators): verify with thermal engineer. RE2020 evolves frequently — sources should be 2025-2026.
Can AI analyze zoning code instead of architect?
For raw rule reading: yes (very helpful for complex 200+ page codes). For interpretation of ambiguous rules: no, architect decides. Always verify with local zoning office if in doubt.
Risk on invented legal references?
Real. A reference to non-existent zoning article or invented case law can cause permit challenge. All references must be verified in legal databases, zoning code, or case law databases.
What impact on firm margins?
On production phases (reports, simple 2D plans, estimates): 50-70% time savings. On design, decision-making, contract administration: almost no impact. Net: well-equipped firm can gain 25-40% margin.