A high-end office building in the heart of the 1st arrondissement
•2 bâtiments réunis
•A prime location in the heart of Paris
•Approximately 5,800 m2 of useful surface area
•HQE Sustainable Building V4 at very good level
•Architecture designed by Mars Architectes and decoration created by Studio Jean-Philippe Nuel
Paris, June 9, 2026 – Eighteen months after the start of work, Altarea Entreprise announces the delivery of the 185 Saint-Honoré building to the international law firm Ashurst, which, established between Madeleine and the Opéra Garnier for more than twenty years, is reaching a new stage in its development in France and will set up its new Parisian headquarters there on July 20th.
Located in the heart of the 1st arrondissement, in the immediate vicinity of the Louvre, the Tuileries gardens and the Comédie-Française, this set of offices bringing together two communicating buildings offers more than 150 Ashurst employees a high-end working environment, combining architectural excellence, comfort of use and the highest standards in terms of environmental performance.
Part of a growth dynamic, this move supports Ashurst’s ambition to welcome new teams and strengthen its attractiveness to the best talents.
A real estate complex rehabilitated to meet new high-end office standards, combining quality of use and energy performance
This exceptional real estate complex, bringing together two buildings located respectively on rue des Pyramides and rue Saint-Honoré, has been the subject of a tailor-made renovation aimed at modernizing the spaces while preserving the historical identity and character of the place.
Designed by Mars Architectes, these new premises, leased for 9 years in 2024, will offer Ashurst, upon its move in July, a working environment combining heritage and modernity, ergonomics, comfort, flexibility and high-end services. Each floor has been designed to promote optimal working conditions, thanks to a strong presence of natural light, modular spaces, informal lounges, meeting rooms and ergonomic workstations. These new premises will promote synergies and collaboration between teams, while respecting confidentiality, and will contribute to everyone’s well-being. The design and decoration of the interior spaces were entrusted to Studio Jean-Philippe Nuel, which has an elegant and contemporary approach.
The building also stands out for respecting the highest standards in terms of environmental performance. It benefits from BREEAM RFO Very Good level, HQE Sustainable Building V4 Very Good level certifications as well as the Osmoz Ready built lever label, attesting to the environmental quality and well-being offered to occupants.
In accordance with the objectives of the tertiary decree, the building aims to reduce its energy consumption by 60% by 2050. The spaces are thus heated and air-conditioned via urban networks, supplemented by intelligent management of ventilation, heating and LED lighting, allowing to combine user comfort and control of the carbon footprint.
The reception areas, which offer remarkable perspectives on the great Parisian monuments, will constitute an exceptional welcome place for the clients and partners of the Ashurst firm, conducive to exchanges and strategic support.
A concrete illustration of Altarea Entreprise’s expertise in high-end Parisian office real estate
With the delivery of 185 Saint-Honoré, Altarea Entreprise confirms its know-how in the development and rehabilitation of high-end office buildings in the heart of Paris. This project illustrates the group’s ability to transform emblematic assets into premium workspaces, adapted to new uses and the expectations of international companies in terms of comfort, flexibility and environmental performance.
“185 Saint-Honoré fully illustrates our ability to identify and transform exceptional assets in the most strategic locations in Paris. Located in the heart of a particularly lively and sought-after district, benefiting from remarkable accessibility thanks to its network of public transport and its soft mobility, this building offers its occupants a rare working environment. Alongside Ashurst, we have designed a premium environment which combines centrality, urban attractiveness, quality of life and high requirements in terms of environmental performance,” declares Adrien Blanc, President of Altarea Entreprise.
More than an address, this new location reflects the strategic vision of the Ashurst firm for its Parisian anchorage
“185 rue Saint-Honoré fully embodies the ambition we have for our teams and our clients. This new location reflects the evolution of our practices and our working methods, while supporting our growth and our ability to attract the talents of tomorrow,” indicates Noam Ankri, Managing Partner du bureau de Paris d’Ashurst.
“We were particularly won over by the quality of the project and the spaces, as well as the attention paid to uses. The volumes, natural light and diversity of the layouts will help to create a stimulating environment, designed to encourage exchanges and strengthen cohesion between teams,” adds Philippe None, Senior Partner of Ashurst’s Paris office.
“A true monument building, 185 Saint-Honoré combines historical authenticity and innovation, in a demanding environmental approach. With its breathtaking views of the Tuileries, the Louvre, the Orsay Museum and the Saint-Roch Church, it constitutes an emblematic location for the firm in Paris,” concludes David Noblinski, Associé Immobilier, Ashurst.
