Upsilon is an architecture and environmental engineering agency. The agency is strongly committed to integrating environmental challenges at the core of the design process, through the enhancement of existing heritage, reuse, and the use of natural, unprocessed materials. Its positioning focuses on transforming existing buildings and materials to give them a second life.
14 property type
Single-Family Homes
Multi-unit Residential
11 type of work
New Build
Renovation
6 services
Design / Plans
Planning permission application
4 achievements
Servadio Architecture designs tailor-made projects that combine art, exceptional craftsmanship, and innovation, creating unique spaces that meet the highest aesthetic and functional standards.
26 property type
Single-Family Homes
Passive House / Eco-friendly
12 type of work
New Build
Renovation
6 services
Design / Plans
Planning permission application
FVA — Florent Vaissié Architecture is an architecture and design studio founded in Paris in 2021. The practice develops a thoughtful and context-driven approach, shaped by the specific conditions of each project. Every intervention is grounded in a careful reading of its context—whether transforming an existing site or working on a new one—in order to deliver precise, rooted, and lasting responses.
20 property type
Single-Family Homes
Passive House / Eco-friendly
16 type of work
New Build
Renovation
7 services
Design / Plans
Planning permission application
3 achievements
“Architecture is a combat sport.”
True to this vision of Rudy Ricciotti, AEON approaches each project with boldness and a touch of rebellion, creating unique spaces that defy convention, combining creativity, precision and a sincere passion for the unexpected.
14 property type
Single-Family Homes
Passive House / Eco-friendly
12 type of work
New Build
Renovation
3 services
Planning permission application
Construction Management
We find
the architect for you
3 achievements
An experienced architect, he designs and supports renovation, extension, and transformation projects, whether new or refurbished. He works with individuals, developers, and public clients with rigor, clarity, and architectural rigor.
18 property type
Single-Family Homes
Passive House / Eco-friendly
12 type of work
New Build
Renovation
5 services
Design / Plans
Planning permission application
3 achievements
DE BOKAY ARCHITECTE
Stephan DE BOKAY
Architecte in Rueil-Malmaison 92500
Move to Lagny-sur-Marne 77400
For 30 years, the DE BOKAY ARCHITECTE agency has been supporting you to bring your complex projects to life as a project management assistant in programming or operation assembly and as a DPLG Architect project manager from the design phase to there
6 property type
Single-Family Homes
Passive House / Eco-friendly
8 type of work
New Build
Renovation
5 services
Design / Plans
Planning permission application
Their experience gives them the ability to listen, engage in dialogue and provide responses that synthesize the expectations of the future users of the space, thereby offering a tailor-made project that meets their client’s functional and aesthetic needs. Projects are above all a collaborative effort between the architect and their clients. They are the ones who will ultimately use the space. A project should not be just an image; it must be able to support clients throughout their life journey.
11 property type
Single-Family Homes
Townhouses
9 type of work
New Build
Renovation
3 services
Design / Plans
Planning permission application
ALEJANDRO SAHUQUILLO
SAHU ARCHITECTURE
Architecte in Villeneuve-le-Roi 94290
Move to Lagny-sur-Marne 77400
SAHU Architecture, founded by Alejandro Sahuquillo, designs spaces that combine creativity, functionality, and emotion. Blending architecture, interior design, and custom-made furniture, it transforms each project into a unique, timeless place centered on the well-being of its users.
5 property type
Single-Family Homes
Smart Homes
5 type of work
New Build
Renovation
5 services
Design / Plans
Planning permission application
Together
we can define your project
Make a free appointment with our specialist advisor.
Request a meeting
9 achievements
Constantly seeking a balance between the sensitive and the functional, OSA is involved in housing and tertiary equipment operations, in all phases.
17 property type
Single-Family Homes
Passive House / Eco-friendly
11 type of work
New Build
Renovation
4 services
Design / Plans
Planning permission application
3 achievements
Architectural agency based in Essonne and specializing in the renovation, elevation and extension of existing houses and the construction of new housing, individual or collective.
14 property type
Single-Family Homes
Passive House / Eco-friendly
11 type of work
New Build
Renovation
6 services
Design / Plans
Planning permission application
1 achievement
Richard LELOUP
Richard LELOUP Architecte
Architecte in Saint-Maurice 94410
Move to Lagny-sur-Marne 77400
A passionate and versatile architect, Richard LELOUP enjoys helping his clients to realise their projects and define their long-term expectations.
12 property type
Single-Family Homes
Passive House / Eco-friendly
11 type of work
New Build
Renovation
5 services
Design / Plans
Planning permission application
3 achievements
FAVRESSE ARCHITECTES designs and develops living spaces on any scale. Nurtured by the diversity of its previous projects, the agency is able to provide a unique response aimed at creating meaningful spaces.
16 property type
Single-Family Homes
Passive House / Eco-friendly
15 type of work
New Build
Renovation
5 services
Design / Plans
Planning permission application
We find
the architect for you
Marion GRANDIN
ATELIER D'ARCHITECTURE MARION GRANDIN
Architecte in Gambais 78950
Move to Lagny-sur-Marne 77400
Architect specialized in residential design, Marion GRANDIN has been supporting private clients for nearly ten years with their single-family homes, extensions, renovations, and rehabilitation of existing buildings. She also works on collective housing projects and as a condominium architect. As a single point of contact, she designs tailor-made, sustainable spaces adapted to your daily life, from feasibility studies and initial sketches through to construction supervision.
18 property type
Single-Family Homes
Passive House / Eco-friendly
9 type of work
New Build
Renovation
6 services
Design / Plans
Planning permission application
1 achievement
Line CALDER
EI LINE CALDER
Architecte in BOUTIGNY PROUAIS FRANCE 28410
Move to Lagny-sur-Marne 77400
Line Calder has been practising as an architect since obtaining her DPLG architecture degree, awarded by the French government in 1997, following studies that included a period at the University of Chicago.
She specialises in projects involving existing buildings, including alterations, interior reconfigurations, extensions, changes of use, restoration, rehabilitation, subdivision and more.
Her practice is based 70 km west of Paris, in the small village of Boutigny (28410), in Eure-et-Loir, near Houdan (78550) in the Yvelines. Her area of practice extends northwards to the banks of the Seine around Mantes (78200), eastwards to the outskirts of the Rambouillet forest (78120), southwards towards Chartres (28000), with its cathedral on the horizon, and westwards as far as the valleys around Mortagne-au-Perche (61400).
It is worth noting that in 2017, after 20 years of professional practice in France, she returned to Australia, her home country, to broaden her experience. She eventually resumed her architectural practice in 2025, bringing with her a renewed sense of enthusiasm and fresh perspective.
21 property type
Single-Family Homes
Passive House / Eco-friendly
7 type of work
Renovation
Energy renovation
5 services
Design / Plans
Planning permission application
3 achievements
The Clarté architecture studio has been established since 2020 by the architect Romain LAGAR. It is aimed at private individuals, developers and public decision-makers, for all new construction, rehabilitation, renovation, extension and elevation projects, from the sketch to the acceptance of the work.
25 property type
Single-Family Homes
Passive House / Eco-friendly
15 type of work
New Build
Renovation
7 services
Design / Plans
Planning permission application
8 achievements
Christophe JOURNE
STE AMENAGEMENT URBAIN ET ARCHITECTURAL
Architecte in Cergy 95000
Move to Lagny-sur-Marne 77400
SAUA, Urban and Architectural Development Company, designs and carries out the construction, renovation, and extension of various developments and buildings — including individual and collective housing (up to the 4th family) and public-access establishments (ERP) such as shops, offices, schools, sports facilities, cultural centers, agricultural or industrial buildings, subject to labor code regulations and classified environmental protection installations (ICPE). It provides relevant diagnostics of existing structures and high-quality project designs through its complete mastery of building engineering. It promotes bioclimatic architecture, optimizing energy performance and environmental quality across all sites.
21 property type
Single-Family Homes
Passive House / Eco-friendly
17 type of work
New Build
Renovation
7 services
Design / Plans
Planning permission application
Together
we can define your project
Make a free appointment with our specialist advisor.
Request a meeting
Julien GRENOT
JULIEN GRENOT ARCHITECTURE
Architecte in Richebourg 78550
Move to Lagny-sur-Marne 77400
Julien Grenot Architecture is a studio that designs contemporary spaces combining elegance, functionality, and well-being. From individual housing to prestigious tertiary projects, each realization reflects a subtle balance between aesthetics and pragmatism, with constant attention to materials, light, and client needs.
20 property type
Single-Family Homes
Passive House / Eco-friendly
8 type of work
New Build
Renovation
4 services
Design / Plans
Planning permission application
9 achievements
Aurélie CRISCILLO
IMAGINARIO COLECTIVO
Architecte in Le Mesnil Saint-Denis 78320
Move to Lagny-sur-Marne 77400
Based in the Chevreuse Valley, IMAGINARIO COLECTIVO develops a sober and contextual architectural approach, attentive to uses and existing buildings.
The firm works on housing, workspaces, retail, renovation, and heritage projects, favoring a bespoke, sustainable, and sensitive approach.
19 property type
Single-Family Homes
Passive House / Eco-friendly
17 type of work
New Build
Renovation
7 services
Design / Plans
Planning permission application
Pauline ALEZRA
Studio Janvier Architectes
Architecte in Egreville 77620
Move to Lagny-sur-Marne 77400
Fondé par Pauline Alezra, le Studio Janvier s'est construit autour d'une conviction forte : l'existant est une ressource précieuse. Forte de 7 années d'expérience à la tête du pôle transformation/réhabilitation d'une grande agence parisienne, Pauline développe aujourd'hui une agence d'architecture.
26 property type
Single-Family Homes
Passive House / Eco-friendly
14 type of work
Renovation
Energy renovation
7 services
Design / Plans
Planning permission application
4 achievements
Aurélie BREUIL
ISARA ARCHITECTES ASSOCIES
Architecte in Margny-lès-Compiègne 60280
Move to Lagny-sur-Marne 77400
ISARA Architectes associés designs living and working spaces that combine architectural excellence, quality of use, and everyday comfort. Each project is developed in dialogue with its inhabitants and users in order to respond as accurately as possible to their lifestyles, aspirations, and needs. Attentive to both the context and the expectations of each client, we develop tailored and custom-made architecture designed specifically for you.
21 property type
Single-Family Homes
Passive House / Eco-friendly
11 type of work
New Build
Renovation
7 services
Design / Plans
Planning permission application
