Clifford Chance has advised Nextensa, Group Promobe and their joint venture Grossfeld on the Stairs project, from development and construction through to the sale of Stairs S.à r.l. to State Street Services Luxembourg, which completed on 1 July 2026.
With a transaction value exceeding €100 million, this is Grossfeld’s second major real estate deal of the year in Luxembourg and a significant moment for the office property market.
Stairs is the first building in Luxembourg to achieve BREEAM Outstanding certification, the highest level of the internationally recognised environmental standard. It also holds WELL Gold certification and an A+ energy rating.
Located in the Cloche d’Or district, the project sets a benchmark for sustainable and future-proof office development.
Clifford Chance supported Grossfeld at every stage of the project, contributing to the development of high-quality real estate in Luxembourg.
The team was led by Senior Counsel Sébastien Schmitz and included Senior Associate Alma Custovic and Associate Johanna Mazy.
Where the legal industry reads first.
Enjoyed this article? Get the biggest legal industry updates, deals, appointments, insights and expert interviews in your inbox, free.
No spam. Unsubscribe anytime.From Legal Desire
Is your firm the one being cited, or the one being skipped?
We ran the test. On several everyday legal questions, software companies are answering and law firms are not. We help firms fix that, and we build the technology behind the practice.
Lawyers and firms: get featured on Legal Desire
Share your deals, lateral moves, firm news and insights with 1M+ monthly readers: founders, law firm partners, general counsel and practising lawyers across the US, UK, EU and GCC.
Get featuredSubmit a press releaseThe advising firms, the named deal team, the value and the parties, with every other announced deal by the same firms and lawyers. Open the deal record
