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French law · Prepare your case, step by step

Unauthorised condominium works in France

Check condominium works by describing the installation, affected parts of the building and permissions obtained. A syndic's agreement, a owners' meeting resolution and planning permission are separate matters. Assemble plans and correspondence before seeking regularisation or challenging a neighbour's works. The fact that construction is complete does not settle whether the required approvals were obtained.

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02 / Prepare my file

Which issues should I examine in my file?

  1. Do the works affect common parts?

    Read this distinction: Works confined to private areas differ from works affecting common areas or the building's external appearance, for which general-meeting approval may be required. Record what your documents establish and what remains uncertain.

  2. Does planning permission replace condominium approval?

    Read this distinction: Co-ownership approval and planning permission are separate checks; obtaining one does not replace the other. Record what your documents establish and what remains uncertain.

  3. Are completed works automatically regularised?

    Read this distinction: Works carried out without the required approval are irregular; possible retrospective approval is distinct from an acquired right to keep the works. Record what your documents establish and what remains uncertain.

Fictional example · adapt to your facts

What does a worked example show?

An external unit was fixed to a façade after an informal exchange with the syndic, but no meeting resolution has been found.

The resulting sheet
Task
Unauthorised condominium works in France
Evidence to locate
Plans, photographs, technical description and invoices for the works
Question to resolve
Does planning permission replace condominium approval?

Gather the specification, building rules and meeting records to identify any missing approval.

01 / Prepare my file

How can I prepare this file?

This organiser assembles your choices on this page. Fields are not sent automatically and are not retained after reloading.

Your starting documents
The point to check

Read this distinction: Works confined to private areas differ from works affecting common areas or the building's external appearance, for which general-meeting approval may be required. Record what your documents establish and what remains uncertain.

A fact → a document → a check

Which situations should I distinguish?

Unauthorised condominium works in France · two situations to keep separate
SituationPurposeWhat to check
Condominium approvalAuthorise under building rulesOwners’ meeting resolution
Planning permissionCheck planning requirementsCompetent authority’s decision
Source 1

Do the works affect common parts?

Works confined to private areas differ from works affecting common areas or the building's external appearance, for which general-meeting approval may be required.

Source 1

Does planning permission replace condominium approval?

Co-ownership approval and planning permission are separate checks; obtaining one does not replace the other.

Source 1

Are completed works automatically regularised?

Works carried out without the required approval are irregular; possible retrospective approval is distinct from an acquired right to keep the works.

Source 1
03 / JULIE

What should I know before acting?

Do the works affect common parts?

Works confined to private areas differ from works affecting common areas or the building's external appearance, for which general-meeting approval may be required.

Source 1

Does planning permission replace condominium approval?

Co-ownership approval and planning permission are separate checks; obtaining one does not replace the other.

Source 1

Are completed works automatically regularised?

Works carried out without the required approval are irregular; possible retrospective approval is distinct from an acquired right to keep the works.

Source 1

Which documents make this file useful?

Start by locating these records: Plans, photographs, technical description and invoices for the works; Co-ownership rules and records identifying private and common areas; General-meeting minutes, correspondence with the syndic and any planning permissions. Keep unknown or unavailable details marked as such; a checklist is not proof that a document exists.

What does the worked example demonstrate?

An external unit was fixed to a façade after an informal exchange with the syndic, but no meeting resolution has been found. Gather the specification, building rules and meeting records to identify any missing approval. This fictional example demonstrates a preparation method, not the outcome of a real case.

Which mistakes can change the analysis?

Avoid these shortcuts: Assuming that approval from the syndic or conseil syndical is equivalent to general-meeting approval; Seeking demolition or promising retrospective approval without precisely classifying the works and affected rights.

Source 1

Does completing the sheet submit a request?

No. The sheet organises your selected issue, available records and own notes. It sends nothing to an authority or another party, calculates no deadline and cannot suspend one. Copy the file and check the applicable procedure before acting. Gather the specification, building rules and meeting records to identify any missing approval.

How can Julie help with this preparation?

Julie by AlphaDeep is an AI legal assistant for French law. Use the chosen question to discuss this task: Unauthorised condominium works in France. Julie can help explain sources, examine document wording and draft a response. Check its proposals against your originals and ask the appropriate professional to review consequential choices.

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How can I continue with Julie?

Continue with Julie: sourced questions, document analysis and assisted drafting.

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Sources consulted on 21 September 2026.

Which official sources should I check?

Which related task can I prepare next?

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General information about French law. This organiser does not file or send an application. Have consequential choices checked by the relevant professional.