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.

3 achievements

Architect, he has also developed expertise in general contracting, relying on the strength and structure of the LES ARCHITECTEURS group. This dual approach—architectural design and turnkey project delivery—allows him to offer his clients comprehensive control over their projects.

25 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

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Atelier DAM, an architecture, project management, and planning firm located between Oise and Île-de-France, supports the construction, renovation, extension, and transformation of all types of properties.
Their team designs and manages tailor-made projects that combine design, spatial optimization, and technical performance, revealing each building’s potential and ensuring long-term value. From housing rehabilitation to the creation of professional spaces, they design functional, harmonious, and profitable environments, adapted to today’s and tomorrow’s needs. With a creative, rigorous, and pragmatic approach, Atelier DAM transforms every idea into a concrete, controlled, and sustainable project, serving both real estate value and user comfort.

18 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

6 achievements

Architect page

KIDA is an architecture and design firm founded in 2015, working between France, Italy and Colombia. We offer an eco-conscious approach, adapted to the specific challenges of the sites on which we work.

21 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

4 achievements

Architect page

Architecture Firm
Specialists in Existing Structures and Innovation
Louis Oberti (Heritage Architect – HMONP)

Simon Terziano (DSA in Architecture and Heritage – HMONP)

26 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

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4 achievements

Multicultural influences from India, Portugal, Spain, and Japan; a systemic vision bridging urban planning, architecture, and heritage. Paul de CATHELINEAU will bring together his experiences to define with you a project that truly reflects who you are.

12 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Extension

New Build

5 services

Planning permission application

Construction Management

5 achievements

Architect page

Studio Iroko is an architecture agency specialized in the design of sustainable buildings. The team is at your disposal to discuss your construction, renovation, or extension project.

19 property type

Single-Family Homes

Passive House / Eco-friendly

6 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

5 achievements

Chloé GROSGEORGE, State-Certified Architect and Licensed Project Manager in her Own Name, will be delighted to share her passion and vision with you, and to offer a project tailored to your needs and desires. Don’t hesitate!

20 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

Graduated from EAVT in 2014, and HMONP in 2022, Gaspard CLOZEL divides his time between personal projects and independent collaborations, working on housing projects and small-scale facilities. He is interested in the way construction and usage constraints shape architectural form.

11 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Extension

New Build

2 services

Planning permission application

Construction Management

Together
we can define your project

Make a free appointment with our specialist advisor.

Request a meeting
On trouve l'architecte pour vous

5 achievements

26 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

A synergy of expertise to support you in all your architectural and interior architecture projects. A multidisciplinary team at your service to develop your projects and ensure smooth, well-coordinated site management

13 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

7 achievements

Founded in 2005, the Atelier d’Architecture Aurélie Barbey (AAAB) supports its clients in designing bespoke living spaces. Attentive to uses, aspirations, and context, the studio co-constructs each project with its clients, developing a sensitive, sustainable architecture intimately connected to the landscape.

25 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Extension

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

Extension

New Build

6 services

Design / Plans

Planning permission application

We find
the architect for you

Search
On trouve l'architecte pour vous
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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

Extension

New Build

6 services

Design / Plans

Planning permission application

Atelier Frédéric Bruxelle provides tailored architectural and project management services for both private and professional clients, supporting projects from concept to completion.

Its services cover every stage of the process, from initial sketches to construction supervision, including cost evaluation, building permit applications and contractor consultations.

Based in Blois (41), the team of DPLG architects and building designers remains attentive to each client’s needs in order to create fully customized architectural projects.

13 property type

Apartment

Multi-unit Residential

11 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

Architect page

Marc BROSSET HECKEL, an architect based in Grenoble, offers full or partial support for all types of architectural projects. He is involved from feasibility studies to project delivery, including bespoke design, administrative procedures, contractor consultation, and construction supervision.

His approach adapts to the specific needs of each client, whether for a comprehensive mission covering all stages from design to completion, or for targeted support such as obtaining a building permit or conducting a feasibility analysis. The goal is to provide a personalized, rigorous response tailored to the expectations and constraints of each project.

26 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Transforming a place begins with learning how to look at it. Aura Atelier d’Architecture designs and supports renovation, extension and new-build projects, with particular attention to existing spaces, how they are used, and the people who bring them to life.

23 property type

Single-Family Homes

Passive House / Eco-friendly

12 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.

Request a meeting
On trouve l'architecte pour vous

1 achievement

Architect page

As an architect, structural engineer and urban planner, I support private clients, businesses and investors with their construction, renovation, transformation and development projects. My approach combines bioclimatic design, technical expertise and value creation. I also provide project management assistance, strategic consulting and comprehensive support for property development, corporate, hospitality and industrial projects.

22 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Mathieu GAUTHIER, an architect for over 20 years, I am passionate about my profession.

As the director of GM Architecte, I work on new-build, renovation and extension projects. My approach to your project is first and foremost based on listening to your needs and aspirations, as well as precision and dialogue. My aim is to create a project that reflects who you are and that truly belongs to you.

25 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Founded in 2011 in Laillé, HENRIO ARCHITECTE works with both public- and private-sector clients looking for functional, thoughtfully designed spaces.

Enhancing the urban and architectural qualities of existing buildings, particularly through the renovation and rehabilitation of historic properties, is the guiding principle behind the projects we develop.

We combine our expertise and creative sensitivity to work with you on a project that reflects your needs, expectations and budget, while taking into account the inherent qualities and character of your existing bui

25 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

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

Extension

New Build

6 services

Design / Plans

Planning permission application