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.

1 achievement

Architect page

I believe in pragmatic, efficient architecture that serves the common good. Your project cannot wait — it needs to become a reality as quickly as possible.

The aim of ROC Atelier d'Architecte is to meet all of its clients' and partners' needs while respecting their time, budget and spatial constraints.

21 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

NATENJO is an architecture and design studio based in Paris. Jonathan Lajchter and Natacha Prynda draw their inspiration from their travels and experiences around the world, to assist their clients in the design of unique and diverse projects. 

13 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Conversion

New Build

4 services

Design / Plans

Planning permission application

3 achievements

Architect page

Since 2024, Massoulès Architectes has been supporting real estate project developers, property managers, SME leaders, and technical directors in their challenges of development, value creation, compliance, and environmental transition.

25 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application

6 achievements

Maslouhi Bonnet Architectes supports you in all your projects, whether new construction or renovation, with attentive and thoughtful listening to your needs. This attention makes each project a unique creation, placing creativity at the service of your vision.

10 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

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2 achievements

PRADIER ARCHITECTE is an architectural practice registered with the Île-de-France Order of Architects. The firm designs bespoke residential, office, workshop, and public building (ERP) projects, tailoring every solution to the specific requirements of each client and site. Combining technical expertise, sustainability, and thoughtful design, the agency provides comprehensive architectural services for both new-build and renovation projects, from concept development and planning applications to construction supervision.

16 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

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Based in Ciboure, in the French Basque Country, Atelier Ondra is an architectural practice that develops projects rooted in their context, existing buildings, and everyday uses. Combining research, innovation, design, and architecture, the studio creates thoughtful, balanced, and sustainable solutions for residential, commercial, and property development projects, including renovations, new constructions, and adaptive reuse.

24 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Architect page

We offer fluid and functional architecture for both construction and rehabilitation. Individual & Professionals - Gard - Lubéron - Alpilles

We support our clients in all phases that make up a project.

19 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

5 achievements

5°Est Architecture, a practice specialising in heritage architecture, supports projects involving the rehabilitation, renovation and enhancement of existing buildings. The practice takes a sensitive and contemporary approach, respecting the history, materials and identity of each place while responding to today’s uses and needs.

11 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Conversion

Renovation

7 services

Design / Plans

Planning permission application

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11 achievements

Sandrine Suignard, an architect, founded her practice in 2009 after living in the Netherlands. She's responsive, attentive, and open to dialogue with her clients. Her architecture aims to reflect your personality.

25 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

4 achievements

Architect page

PRarchitecture offers a holistic approach in the design of these projects aimed at offering users an integrated experience around the project combining economy, sustainability / flexibility and functionality.

13 property type

Single-Family Homes

Townhouses

8 type of work

Conversion

New Build

4 services

Design / Plans

Planning permission application

Atelier Spontané Architecture designs unique spaces that reflect the needs of clients. Timothé MARCEAU, member of the Order of Architects, puts his expertise at the service of your projects to create architecture inspired by contemporary French and Japanese references.

26 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

6 achievements

LetH architecture was born to develop a culture of exchanges and meetings which constitutes the real starting point for architectural reflection aimed at bringing buildings into resonance with their environment.

19 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Conversion

New Build

3 services

Design / Plans

Planning permission application

We find
the architect for you

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Arta Studio is an architecture firm led by Marion Arotçarena and Xanti Amado, two rigorous and ambitious architects. Each project, whether new construction or renovation, is carefully studied with sensitivity, taking into account all site constraints as well as the client’s needs and aspirations. The history of the place and the region also play a key role in shaping the direction of each project.

16 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

2 achievements

Architect page

Over 10 years of experience dedicated to your projects. Led by a qualified architect (DPLG, HMONP), ARQ Architecte designs and manages construction, renovation, extension and additional-storey projects across Alsace and Lorraine, from detached houses to apartment buildings, offices and commercial premises. One dedicated point of contact, from initial design through to construction.

25 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application

Whether you’re an individual or business, in need of consulting services or a full turn-key project, experienced architect Anne-Brigette Caseau will propose a solution that fits your needs, goals and budget, with the goal of best adapting to her clients’ requests.

16 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Conversion

New Build

4 services

Design / Plans

Planning permission application

Architect page

LP Architectes is an architecture studio with deep roots, based on experience and the transmission of knowledge to future generations, with an ecological approach that brings together local territory, heritage and the environment, and most of all a profound commitment to people.

16 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Conversion

New Build

4 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
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Franco-Spanish architectural firm working between the northern Lot region and Toulouse.

Generalist practice on all types of projects and scales, in new construction, renovation, refurbishment, and interior design.

The firm's projects strive to be understated, well-situated, and attentive to their surroundings.

17 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Conversion

New Build

6 services

Design / Plans

Planning permission application

1 achievement

An independent DPLG architect for over thirty years, Bernard VAUDAUX-RUTH designs and delivers sustainable low-carbon timber constructions, prioritizing bio-based materials.

Each project draws inspiration from its environment, both to optimize energy performance and to create a harmonious dialogue.

16 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Conversion

New Build

5 services

Design / Plans

Planning permission application

4 achievements

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

Conversion

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Architect page

Atelier SAJ is an architectural practice led by two partner architects, with offices in Toulouse and Lille and projects throughout France. From new-build construction and extensions to interior design and renovation, we support private clients, businesses and public-sector organisations from the initial concept through to construction supervision, providing bespoke solutions, a strong focus on energy performance and rigorous budget management.

Recent publications:

Archi+ 2023

Archi+ 2026

15 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Conversion

New Build

7 services

Design / Plans

Planning permission application