# Designing a Large-Scale Immersive Visit in Architecture, Engineering, and Construction
## 3 Context: Real Estate Development and Urban Living Lab  
### LaVallee: An Urban District under Construction  
LaVallee is a real estate development project under construction. The district is located in a southern suburb of Paris France, specifically in Chatenay-Malabry city, and its spatial extent is approximately 500 m \(\times\) 400 m. Figure 5 shows the blueprint of the  
Figure 4: Immersive visit design: workflow diagram from AEC artwork data to virtual reality setup.  
future neighborhood displayed over the current construction site. The construction work in the area began in 2018 and is expected to be completed by 2025. The real estate project aims to create an eco-housing district, with a childcare center, school system, secondary school, gymnasium, stores, an urban farm, and other facilities, which will include more than 2000 housing units. All of these facilities, which are accompanied by manicured public areas, embody the essence of the project: a new neighborhood that is concerned with the quality of life of its residents.  
This enables the city to strengthen its urban and green identity, to revitalize a neglected space at the city's entrance, to ensure urban connections with adjacent neighborhoods and the Parc de Sceaux, and to provide an architectural signature by enhancing the city's qualities and heritage.  
The program has about 213,000 square meters of surface with:  
* 120,000 square meters for residential buildings;
* 24,000 square meters for social housing;
* 40,000 square meters for offices;
* 15,000 square meters for commercial space;
* 14,000 square meters for public utilities (college, school group, gym, nursery, etc.).  
The land was purchased at the end of 2017 by the SEMOP group, a new model of partnership between public and private bodies. The public part is the municipality of Chatenay-Malabry, while the private part is the Eiffage company. Eiffage is the third-leading French group in the civil engineering and public works sectors. The SEMOP or Mixed Economy Company with Unique Operation is driven by an innovative legal structure: the first of its kind in France to be exclusively specialized in urban development. The shareholding of SEMOP is made up of Eiffage Amenagement (50%), the EPT Vallee Sud Grand Paris (34%), and the Caisse des Depots et Congsations (16%). Eiffage company is consequently responsible for the operation's finance and execution. The City, on its part, maintains political authority over the project, with the mayor chairing the SEMOP Supervisory Board and approving operational decisions. SEMOP teams are primarily responsible for the site's organization and coordination.  
This large-scale project, which is being carried out by a number of different companies, has been divided into three phases of development (Figure 6), with the last phase due by 2025. As of 2022, the first phase is nearly complete, and the second phase will begin in 2022.  
Figure 5: Mass plan of the future LaVallee neighborhood and its situation in the city. Aerial image: Google Earth Pro.  
The first phase of the project involves the full area surrounding the district's main street, Cours des Commerces, whilst Phases 2 and 3, by using the main street as the district's core, expand radially to the latter. Therefore, once Phase 1 is completed and the procedures for the second phase are followed, it is possible to bring in the first residents.