607 architects Extension

Extension Architect

A home is one of the most precious assets a person can own. Taking care of it is akin to taking care of oneself. A true living space, a home adapts to the needs of its owners and sometimes requires work to be carried out — including the addition of an extension.

Whether built to gain extra living space, attached to the existing home, or added as an upper storey, an extension serves more than one purpose.

To achieve a functional home extension that matches your vision, a specialist architect is your greatest ally.

Why choose a specialist architect for your home extension?

An architect is not always mandatory for a home extension project. However, calling on this building, construction, and renovation professional brings a number of significant advantages.

An extension in harmony with your home
Adding an extension to your home comes with many challenges. The first is creating a space that is in perfect harmony with your existing home and living environment. Whether in terms of exterior or interior cohesion, working with an architect allows you to choose the type of extension, the materials, and the construction style — ensuring the new space integrates seamlessly with your home.

A project tailored to your budget
A home extension is a project that requires careful planning from the outset. Between site preparation, materials, and labour, expanding your living space requires a considerable budget.

An architect can assist you as the project manager. They design the plans, oversee the works, and coordinate the various tradespeople — all while working within your budget. The best way to avoid unwelcome surprises.

Achieving a functional and practical space
A home extension is more than just extra floor space attached to a main building or added on top of it. Above all, it must be functional and comfortable. Whether it's a conservatory, a garage, or an additional room, the specialist architect carries out the work so that the extension fulfils its primary purpose.

Insulation, natural light, electrical wiring, built-in storage — your new room is immediately ready to use.

15 achievements

Architect page

Architecture / Consulting / Engineering

Summa is an agency that does not hesitate to think outside the box, offering you tailor-made services.

8 property type

Single-Family Homes

Townhouses

13 type of work

Extension

New Build

7 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

Extension

New Build

4 services

Design / Plans

Planning permission application

3 achievements

Architect page

ATELIER BONOBO is an architecture studio based between Lisieux and Orbec, working on all types of projects — new construction, renovation, and rehabilitation.
Its architect approaches each project with a pragmatic mindset, addressing the complex challenges inherent in architectural creation while striving to bring sensitivity and uniqueness to every design.

20 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

Stéphanie DEYRIS-MOUTTE, both a DPLG architect and interior design graduate, assists her clients in the design, renovation, and transformation of their spaces — from private homes to public buildings — with a rigorous, sensitive, and sustainable approach. She is highly attentive to her clients’ expectations and deeply respectful of their wishes and needs. Her professional background has allowed her to acquire a wide range of skills across diverse fields, enabling her to successfully respond to a broad variety of projects.

21 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

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Ahora Architectes was born from the meeting of an architect and a construction engineer who combine their expertise in service of your building project, drawing on their own experience as well as that of their many partners (cost consultants, engineering offices, inspection bodies, health and safety coordinators, etc.).

10 property type

Retail

Hotels - Restaurants

12 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Architect page

Atelier OCTA conçoit depuis 2014 une architecture humaine, durable et sur mesure, mêlant construction raisonnée, rénovation, réemploi et créativité. Basée à Lyon, l’agence intervient partout en France sur des projets variés, du logement aux lieux recevant du public.

26 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

8 achievements

Based in Pertuis, in the heart of the Luberon, MOGA Architecture designs new-build and renovation projects across a wide range of programmes, including individual houses, multi-unit residential developments, wine estates, commercial and business premises, retail spaces, restaurants, public-access buildings, schools and more.

Led by Camille Gardien and Jérémy Moreau, whose complementary expertise spans urban planning, architecture and interior architecture, the practice develops an architectural language that is both authentic and contemporary: contextual architecture that integrates harmoniously into the landscape, embraces bioclimatic principles and makes use of healthy, sustainable materials.

16 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

3 achievements

Architect page

An HMONP-certified architect based in the Pays Mellois region, Colas MORNET practices an architecture rooted in its territory, attentive to use, and engaged with contemporary challenges. With an atypical background in construction (BTP), the non-profit sector, and event management before becoming an architect, he supports a wide range of projects: housing, renovation, agricultural buildings, and cultural spaces.

He prioritizes the rehabilitation of existing structures, bioclimatic approaches, local materials, and low-tech systems. He places pedagogy and transparency in decision-making at the heart of his relationship with clients.

11 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

Together
we can define your project

Make a free appointment with our specialist advisor.

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1 achievement

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

Extension

Renovation

5 services

Design / Plans

Planning permission application

1 achievement

Architect page

IMÉ is an architectural practice founded by Émilie CALVAS, whose work is deeply rooted in the landscapes of Provence and Corsica, on both shores of the Mediterranean. Every project begins with a dialogue between a place, its history, and the people who inhabit it. Through a sensitive, context-driven approach and personalised guidance, the studio reveals the potential of existing buildings while designing thoughtful renovations, transformations, and new constructions that respect both their environment and local heritage.

22 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

4 achievements

Architect page

HMONP-qualified architect, a graduate and registered with the French Order of Architects, Rui Daniel has been working for over ten years on construction, refurbishment and transformation projects, combining architectural quality, technical expertise and high standards of execution.

Let’s discuss your project and work together to develop an architectural solution tailored to your needs, your budget and your ambitions.

23 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Architect page

After gaining experience in a variety of professional settings, including many years in the United Kingdom, Stanislas Pratviel founded Agence ADT in 2024 with a clear ambition: to bring complementary areas of expertise together within a single practice, dedicated to creating architecture that is useful, thoughtful and sustainable.

Agence ADT combines architecture, interior design, building physics, bioclimatic engineering, energy expertise and environmental design to create spaces that are beautiful, functional and responsible.

Our approach is fundamentally multidisciplinary, with a strong focus on experimentation, quality of use and environmental performance.

23 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Extension

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

3 achievements

STUDIO ASK is an architecture practice based in La Rochelle, founded by Sarvenaz ASKARI, HMONP-qualified architect.

The practice works on residential, office, retail and public facility projects, supporting each client from design through to completion. STUDIO ASK is committed to a contextual approach to architecture, where every project finds its meaning and identity through its relationship with its surroundings.

19 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

Architect page

L’agence Studio GDA réalise de nombreux projets d’architecture de grande envergure mais également de plus petite taille ainsi que de nombreux documentaires et expositions photographiques, avec l'utilisation des technologies numériques .

7 property type

Single-Family Homes

Multi-unit Residential

8 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

Emmanuel GIGON

ACROPOLE

1 Opinions

Architecte in Vendôme 41100

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Founded in 1996 by architect Emmanuel Gigon (DPLG), Acropole is an architecture firm that offers personalised services and consulting to their clients. The firm is specialised in the construction and redevelopment of industrial buildings, including those falling under the French ICPE classification (facilities classified under environmental protection).

12 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Extension

New Build

4 services

Consulting

Design / Plans

Jérémy Lay and Théo Navarro, both qualified and experienced architects, founded Atelier PAPYR. Together, these architects push their thinking as much in the design phase as in the construction. Conscious that the act of building can influence a landscape in a sustainable way, they choose to design their architecture using local and organic materials.

14 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Extension

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

Jérôme Chapelet-Letourneux is a talented architect who has gained experience in renowned agencies such as Norman Foster's and Jean Nouvel's. His experience and expertise enable him to take on a multitude of projects for private and professional clients.

12 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

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

Extension

New Build

5 services

Design / Plans

Planning permission application

1 achievement

Welcome to Equilone, your interior design and architecture specialist, for personalised, functional living spaces that meet all your needs.

15 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

3 achievements

Architect page

DPLG architect, Vincent LEBEGUE develops and renovates existing homes while preserving the spirit of the place and integrating all the innovations necessary for the energy transition. He also designs new houses and creates extensions.

12 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application