Air conditioning in a co-ownership: permissions and steps

Installing air conditioning in a co-ownership building is entirely possible, but as soon as an outdoor unit is fixed to the façade, a visible balcony or a common area, you generally need approval from the general meeting (AGM). Fitting inside your own lot (wall units, ducts) is up to you; it’s the impact on the building’s external appearance that triggers the co-ownership’s consent. Anticipating this step avoids a delayed — or redone — installation.

Why the co-ownership has a say

A split air conditioner has an outdoor unit that must be placed somewhere. The façade, roof and often balconies affect the building’s external appearance and the common areas — which belong to the co-ownership, not to the individual lot owner alone.

The co-ownership rules may also frame, or even prohibit, certain visible installations. That’s the first thing to check.

The 4 steps to be compliant

1. Read the co-ownership rules: look for clauses on façades, balconies, air conditioners and changes to appearance.
2. Prepare a file: exact location of the unit, model, dimensions, noise level, integration photo/plan.
3. Ask the trustee to add it to the AGM agenda (in writing, within the notice deadlines).
4. Obtain the vote: an installation affecting the external appearance requires AGM approval at the required majority.

Once approval is obtained, keep the minutes: they are your proof.

What helps get a “yes”

Co-ownerships accept all the more readily when the project is discreet and neat:

• a well-placed outdoor unit (barely visible, courtyard side, on a roof terrace where relevant);
• a quiet model (noise is neighbours’ first concern);
• a clean integration (trunking painted to match the façade, hidden lines);
• a clear file showing the building’s appearance is preserved.

On the Riviera, with its many sea-view residences and prestige co-ownerships, this care often makes the difference.

The Aircadia tip: never start fitting a visible outdoor unit without AGM approval. An unauthorised installation can be ordered removed — at your expense. A well-prepared file upfront is far better.

And if the façade is really constrained?

When façade fitting is impossible or refused, there are alternatives: a discreet console unit, a ducted system (unit hidden in a false ceiling, outdoor unit on the roof), or dedicated technical locations. An on-site survey finds the solution compliant with the rules.

FAQ

Do I need co-ownership approval for any air conditioning?

As soon as an outdoor unit is visible or fixed to a common area/façade, yes, AGM approval is generally required. A purely internal installation in your lot is not.

How long does approval take?

It depends on the AGM calendar: you often have to wait for the next meeting. Allow several weeks to a few months — hence the value of preparing the file early.

Can a tenant install AC in a co-ownership?

They need the owner’s agreement, who remains the co-ownership’s contact for any change affecting the exterior.

What’s the risk of fitting without approval?

The co-ownership can require reinstatement (removal of the unit) at your expense. It’s a real risk best avoided.

In short

In a co-ownership, air conditioning goes through an approval step as soon as the exterior is concerned: read the rules, prepare a neat file, go through the AGM. A discreet, well-presented project has every chance of being accepted.

A project in a flat in Nice or the 06? We help you prepare the file and choose a compliant, discreet solution. Get your free quote.