20 Rue Boulogne-Billancourt


Retrofit of the street and courtyard facades for an office building located in Boulogne-Billancourt (building A and B). Our response also provides an external staircase, common areas (hall, stairwells) refurbishment, two office floors and outdoor spaces (entrance forecourt, ground floor courtyard, terrace R+3).

The architectural project is accompanied by technical lots refurbishment and environmental performance improvement  (Breeam Very Good).

The work will be done in a inhabited environment.


Project location: Boulogne-Billancourt (92)

Program: Retrofit of street and courtyard facades, addition of an exterior staircase, interior design of common areas and two office floors, development of outdoor spaces

Delivery: Forecast December 2021

Total area: Facades: 1210 sqm Interior: 620 sqm Exterior: 240 sqm

Cost of the works: €3,200,000 excluding tax

Project manager: Giulia Castaldi

Partners: SCB Economy; Atec Engineering; BOW ; G-ON

Environmental approach: Breeam very good

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