Permits — 1 of 20 skills in the Architect & BTP pack
In a chat, Word or Excel files aren't always generated: you get the document as structured text instead.
Déclaration-Préalable
The lightweight filing for smaller works.
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“Use the declaration-préalable skill to check whether this project qualifies for a DP and prepare the matching checklist and notice: …”
1 · The simplest way
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In a chat, Word or Excel files can't always be generated: you'll receive the document as structured text instead, and Claude will flag it.
2 · Command line
/declaration-prealable installs in 3 steps
For Claude Code. The skill installs on your computer and stays available across all your projects.
Prerequisites: Claude Code + Node.js
The skill runs inside Claude Code, Anthropic's AI assistant installed on your computer. Node.js is the engine that runs the install command. Both are free.
Open PowerShell
Click Start, type "PowerShell", then press Enter.
Paste the command
Right-click inside the PowerShell window (or press Ctrl + V) to paste the command below, then press Enter. Wait a few seconds.
npx educasium --skill declaration-prealable --globalWhat you should see:
npx educasium --skill declaration-prealable --global
Fetching https://raw.githubusercontent.com/Chappygo-OS/claude-meta-skills/main/dist/declaration-prealable.zip
…
Installed "declaration-prealable". Restart Claude Code to pick it up.
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In Claude Code, type /restart (or quit and relaunch Claude Code). The skill now appears in the command list.
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What the skill does
View the source codeIn detail.
For a façade refresh, a fence, a limited extension. Claude first checks a DP actually suffices (otherwise points to a PC), then generates the checklist and DP4 notice.
When to use it
For work that only needs a déclaration préalable, not a full permit.
Example usage
/declaration-prealable Façade refresh in a protected zone...In depth
How this skill really works
Déclaration-Préalable produces the support documents for a French Déclaration Préalable (DP/DPMI) — a personalized checklist of required pieces (.xlsx) and the DP4 descriptive notice (.docx) — for projects lighter than a full Permis de Construire: façade refresh, window replacement, fencing, a limited extension, a pool. It doesn't fill the CERFA forms (13703*11 for DPMI, 13404*11 for other DP) and doesn't produce plans or photos.
Before building anything, the skill checks that a DP actually suffices: new construction or extension ≤ 20 m² of footprint and floor area (40 m² in a PLU-zoned urban area, provided the total after the extension stays ≤ 150 m²), a change to the exterior appearance, fences, a pool ≤ 100 m² uncovered or with a cover <1.80 m, ground-mounted solar panels ≤ 1.80 m, walls >2 m. Beyond these thresholds documented in the Code de l'urbanisme (art. R421-9 to R421-12 for scope, R431-35 and following for content), the skill redirects to /permis-construire rather than producing a DP file that doesn't fit.
The instruction period is 1 month, extended by an additional month in an ABF zone and another month in a risk zone — a status always asked about, as with /permis-construire, since it adds pieces (detailed materials notice, color palette).
When to use it
- For a façade refresh, with or without a color change.
- For a change of exterior joinery (windows, shutters).
- For building a fence or a wall >2 m high.
- For an extension ≤ 20 m² (40 m² in a PLU-zoned urban area) that stays within DP thresholds.
- For a pool ≤ 100 m² uncovered or with a low cover.
- When there's doubt between DP and PC — the skill checks the threshold first before producing the file.
When not to use it
- Does not determine on its own, with absolute certainty, whether the project needs a DP or a PC — it applies the thresholds documented in references/structure-dp.md and redirects to /permis-construire beyond them, but the final classification remains the architect's, based on the real project.
- Does not replace the town hall's review of the file, nor the opinion of the Architecte des Bâtiments de France in an ABF zone.
- Does not fill CERFA forms 13703*11 or 13404*11 themselves.
- Does not produce the plans, sketches, or annotated photos the file requires.
The method
The threshold filter, then the checklist / notice pair
references/structure-dp.md first documents a threshold table that confirms (or rules out) that a DP suffices, then the DP1-8 pieces table and the DP4 notice's 4-section structure — shorter than the PCMI4, it doesn't ask for itemized PLU compliance.
- DP vs PC threshold table
- Construction or extension ≤ 20 m² (40 m² in a PLU-zoned urban area, total ≤ 150 m²), exterior appearance, change of use without structural change, fences, pool ≤ 100 m², solar panels ≤ 1.80 m, walls >2 m — beyond that, it's a PC.
- DP1-8 pieces
- Site plan, layout plan (if creating surface), cross-section (if the land profile changes), elevations/roof plan, a representation of the exterior appearance, an insertion document, two photos.
- DP4 notice (4 sections)
- Existing state, project, materials and colors (before/after table), environmental insertion — shorter than the PCMI4, focused on the before/after contrast rather than detailed regulatory compliance.
- Documented common cases
- Façade refresh, joinery change, fencing, extension ≤40 m², pool — each with its specific pieces already identified (e.g. a mandatory color palette in an ABF zone for a façade refresh).
Steps
Confirm a DP actually suffices
Read references/structure-dp.md for the threshold table. If the project exceeds it, tell the user and point to /permis-construire instead of producing a DP file that doesn't fit.
Identify ABF status
Ask whether the project sits in an ABF zone if not already stated — it adds a month to the instruction period and extra pieces (detailed materials notice, color palette).
Collect the information
Nature of the works, existing state (materials, current colors), planned state, common project/regulatory information.
Build the requested documents
Read references/structure-dp.md for the DP1-8 pieces table (conditional pieces included), the 4-section DP4 structure, and the matching common case (façade, joinery, fencing, extension, pool).
Generate the files
Checklist in .xlsx, notice in .docx. Name them Checklist-DP-[ProjectName].xlsx, Notice-DP4-[ProjectName].docx.
Report
List which documents were generated and flag missing pieces (plans, photos) this skill doesn't produce.
Rules
- Always check the DP/PC threshold before producing the file — redirect to /permis-construire if the project exceeds it.
- Always ask about ABF status if not stated — it adds a month to the timeline and specific pieces.
- Follow the DP4 notice's 4 sections: existing state, project, materials and colors, insertion.
- Name files following Checklist-DP-[ProjectName].xlsx, Notice-DP4-[ProjectName].docx.
- Never fill CERFA forms 13703*11 or 13404*11 — that's not this skill's role.
- Do not treat a project that exceeds DP thresholds as a simple DP case — point it to /permis-construire.
Mistakes to avoid
- Producing a DP file for a project that actually exceeds the documented thresholds, without redirecting to /permis-construire.
- Skipping the ABF status question, which nonetheless adds a month and specific pieces.
- Treating the DP4 notice like the PCMI4 (6 sections, itemized PLU compliance) when it only has 4, shorter ones.
- Improvising existing-state colors or materials that weren't supplied instead of asking the user.
- Presenting the DP file as sufficient for any kind of work, without first checking the applicable common case.
What this skill doesn't do
- Does not fill CERFA forms 13703*11 or 13404*11.
- Does not produce the plans, sketches, or annotated photos the file requires.
- Does not handle projects that exceed DP thresholds — redirects them to /permis-construire instead of handling them in its place.
- Does not determine with absolute certainty the DP/PC classification of a borderline project — it applies the documented thresholds; the final call remains the architect's and, ultimately, the town hall's.
- Does not replace the opinion of the Architecte des Bâtiments de France in an ABF zone.
- Does not track the file's progress after filing.
Skill contents — 2 fichiers · 6.6 KB(SKILL.md, references/structure-dp.md)
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