569 architects Conversion

Architect for Building Transformation

Are you looking to transform an old house, add an annex, or carry out works to rehabilitate a building? A specialist transformation architect is the professional you need. Renovating a building can be a delicate process, but thanks to their expertise, this architect takes charge of renovation projects from design all the way through to construction.

While many agree that an architect is an artist at heart, they are no less a technical and construction professional. Do not hesitate to call on this type of architect to transform your home and its interior to the fullest.

In practice, when should you hire a specialist transformation architect?

Architects are multidisciplinary professionals who master all the intricacies of renovation and construction projects — design, work supervision, budget management, administrative procedures, and more. Their involvement guarantees the success of your transformation project.

For the rehabilitation of a building
A building can have many lives, and its renovation creates spaces full of potential. In this type of project, the building's structure remains the same, but its interior is completely transformed. Room layout, utilities, décor, atmosphere — the architect can modify everything, going as far as removing certain non-load-bearing walls.
In structural renovation projects, the transformation architect may also work on the building's structure during more extensive works. This can include raising the roof, carrying out energy renovations, or even reinforcing the framework of a construction.

For the construction of an annex
Having an architect on board is mandatory when building an extension. But beyond the legal requirement, an architect's expertise is invaluable. Whether you are looking for a conservatory or a more substantial structure such as a detached studio, a garage, or a workshop, this professional will carry the project through to completion while respecting technical constraints, the budget, planning regulations, and the specific features of your environment — land type, soil conditions, and so on.

For simplifying administrative procedures
Finally, a specialist transformation architect supports you through all the administrative procedures involved. Planning permission applications, paperwork — the architect handles everything. With a thorough understanding of every aspect of their profession, they ensure compliance with the architectural regulations governing each region of France, whether in Paris or elsewhere.

11 achievements

For more than 20 years, Sandrine TISSOT has been turning ideas into tangible architectural projects. Attentive to her clients’ needs, she supports local authorities, businesses, and private individuals in the design and development of bespoke spaces that combine creativity, functionality, and sustainability. Every project is carefully crafted to respond to real-life uses, enhance its surroundings, and provide a unique architectural solution tailored to each client’s expectations and constraints.

26 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

12 achievements

Architect page

26 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Founded in 2026 in Niherne, France, ATELIER CL’archi supports private clients, local authorities and professionals with their construction, renovation and refurbishment projects. The practice champions a locally rooted, functional and sustainable approach to architecture, shaped through dialogue with its users and designed in harmony with its surrounding environment.

22 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application

A D.P.L.G.-qualified architect, Ludovic Le Gall approaches his work with a strong focus on listening, creativity and finding the right balance between each project, its surroundings and his clients’ expectations. He graduated from the École Nationale Supérieure d’Architecture de Versailles in June 2000 and has developed broad experience in the design and delivery of buildings, particularly in the fields of single-family homes, residential buildings, restaurants and offices.

27 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application

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3 achievements

Adrien Plinet founded his studio Atelier de la Montagne Noire to focus on the projects he's passionate about. Drawing on his experience, he is able to adapt to each situation by implementing various architectural approaches and methodologies in order to meet your needs.

8 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Conversion

New Build

4 services

Design / Plans

Planning permission application

3 achievements

From the sketch to the monitoring of works including the building permit, SIGMA3 ARCHITECTE supports you in all your types of projects. 

22 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Conversion

New Build

3 services

Design / Plans

Planning permission application

1 achievement

Genèse Architecture Studio, founded in 2023 in Bezannes by Marion Sautreau (HMONP), designs tailor-made, sustainable, and bold spaces, each emerging from clients’ specific needs. Combining minimalism, eco-responsibility, and sensitivity, the studio works across all types of projects: individual or collective housing, public facilities, industrial buildings, and wine-related architecture.

13 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Conversion

New Build

4 services

Design / Plans

Planning permission application

2 achievements

For over 25 years, the Patrick Breyton Architecture Studio, based in Valence, has been designing sustainable, functional projects that are deeply integrated into their environment. The studio supports private clients, public institutions, and organizations in new construction, rehabilitation, extensions, or additions, as well as in the design of commercial and tertiary buildings. Each project is conceived on a human scale, with particular attention to usability, dialogue with the site, and the client’s objectives. 

22 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

Together
we can define your project

Make a free appointment with our specialist advisor.

Request a meeting
On trouve l'architecte pour vous

3 achievements

Architect page

Based in La Garde, Cabinet Hartmann offers a full range of services, helping individuals to realise their life projects.

21 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application

8 achievements

Architect page

Jean-Michel HUBERT obtained his diploma from La Faculté Universitaire de Liège in Belgium in 2006.

Sensitive to eco-construction, its experience and expertise allows it to carry out construction, extension and renovation work.

21 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

10 achievements

Architect page

Thomas Bonnin, a state-certified HMONP architect, is based in Vélizy and responds to all your projects with unique support!

14 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

3 achievements

SYNTAXE is a happy collaboration between two passionate architects with complementary backgrounds.

We support you in your projects on capacity studies, on design studies from the sketch to the construction site, on AMO missions (on habitability and mixed programs).

5 property type

Multi-unit Residential

Retail

10 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

We find
the architect for you

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On trouve l'architecte pour vous

5 achievements

Architect page

3m³ architect develops construction and renovation projects for houses and apartments in Paris and neighboring departments. Through attentive listening, our writing is modular and at the service of the client, for a tailor-made design.

14 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

5 achievements

Architect page

The projects entrusted to Baptiste VAISSADE often lie at the heart of his clients’ personal lives. It is therefore essential that every detail is carefully considered, from the initial design concepts to final delivery. He pays particular attention to material selection, their practical use, and the long-term durability of each project.

23 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Conversion

Renovation

7 services

Design / Plans

Planning permission application

4 achievements

A passionate and visionary architect, Guillaume Cornier blends modern elegance and craftsmanship to create unique, sustainable and inclusive spaces, from custom-made furniture to the most ambitious architecture.

16 property type

Single-Family Homes

Chalets / Wooden Houses

15 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

8 achievements

Artéphise Architecte enhances your spaces with a tailor-made approach combining elegance and ecology. Specialist in high-end renovation, the agency enhances the existing to create exceptional, elegant, functional and sustainable places, in perfect harmony with your aspirations.

27 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

Together
we can define your project

Make a free appointment with our specialist advisor.

Request a meeting
On trouve l'architecte pour vous
Architect page

Located in Béthune, in the heart of the Pas-de-Calais region, AR CARRé Architectes. For over twenty years, our firm has developed a demanding and sensitive approach to architecture. Active throughout the Hauts-de-France region, we work on a wide variety of public and private projects: individual and collective housing, public facilities, tertiary buildings, extensions, and renovation projects. Our mission is to design sustainable, functional, and aesthetic spaces that faithfully express our clients’ expectations while respecting the unique character of each site. Every project is a meeting point — a dialogue between the client, the design team, and all those involved in the construction process. This close collaboration ensures a bespoke architectural solution, tailored to budget, schedule, and urban context.

21 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Conversion

New Build

4 services

Design / Plans

Planning permission application

Architect page

Althea Architecture, founded in 2025, is a young, ambitious, and human-centered firm based near Strasbourg. Their vision looks toward the future: to create architecture that is thoughtful, sustainable, and meaningful.They work across a wide range of programs — residential, office, industrial, public facilities, and mixed-use projects — always with the same commitment: to find the most fitting, context-sensitive, and resource-conscious solution.Convinced that what already exists is valuable, they prioritize renovation over demolition, preserving what can be saved and giving new life to buildings. From feasibility studies to on-site supervision, they offer comprehensive project support, working with a trusted network of skilled partners to ensure coherent, high-quality results.

21 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

4 services

Design / Plans

Planning permission application

17 achievements

Architect page

ECLA Architectures is an architecture, design, and project management agency that is both plural and distinctive. Founded by Romain DESMON, the agency operates across various fields related to construction, complete renovation, transformation, and space planning throughout the Hauts-de-France region.

25 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application

4 achievements

Architect page

An architect based in Marseille, Camille SIMONEAU supports private clients and professionals in their renovation, extension, and construction projects. Through Atelier NAIO, she designs sustainable spaces adapted to modern lifestyles, with particular attention to places, uses, and spatial quality.

18 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application