1. Title and exact reference of the project/legislativ document: Project for the construction of three Special Educational Needs (SEN) schools in the canton of Geneva, Switzerland (PL 13562)

2. Objective principal: The main objective is to identify suitable sites for the construction of at least two new SEN schools on each of three pre-identified parcels and propose changes to local planning regulations to allow for the construction of these schools in residential zones.

3. Modifications legislatives proposed and their scope: The project proposes the following modifications to local planning regulations:
   - Allowing for the construction of educational institutions in residential zones (zone villa) through a derogation of the current zoning rules.
   - Activating Article 59, alinéa 11, of the Swiss Law on Construction and Installations Diverses (LCI; rs/GE L 5 05), which allows for a derogation to the indices d'utilisation du sol (IUS) typically reserved for individual residences in residential zones.

4. Discussions or opinions expressed within the document: The project has been studied by external mandators during the year 2023, confirming that all three pre-identified sites are suitable for the construction of at least two SEN schools on each site. However, activating a derogation to the IUS in residential zones is considered a usual procedure.

5. Main implications: The main implications of this project include potential construction of new SEN schools in three cantonal locations (Vernier, Grand-Saconnex, and Onex), as well as modifications to local planning regulations to accommodate these educational institutions within residential zones. These changes may have broader implications for future development projects in similar contexts.