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.

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

Extension

New Build

4 services

Design / Plans

Planning permission application

Architect page

ArchiSpott benefits from a decade of experience in the field of architecture, strenthened by the collaborative partnership between Sabine Potié and Jean-Marie Tabourdiot. Their shared vision of architectural design leads them to develop projects in line with environmental standards. 

16 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Extension

New Build

3 services

Design / Plans

Planning permission application

3 achievements

Architect page

An architect committed to the creation of balanced and meaningful environments, Ludovic Zacchi places particular importance on the integration of architecture into its context. Without masking or obstructing, he must reveal the existing, highlight and enhance it.

15 property type

Single-Family Homes

Passive House / Eco-friendly

6 type of work

Extension

New Build

3 services

Design / Plans

Planning permission application

4 achievements

Architect page

ZAD Architecte embraces this vision of innovative, activist, creative, and responsible building.

Together, let's build a more sustainable future that reflects your image.

18 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

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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

Extension

New Build

6 services

Design / Plans

Planning permission application

6 achievements

Architect page

From creation to renovation, Grégoire PARCOLLET and his team design and deliver unique, optimized, and sustainable spaces—whether homes, offices, studios, or commercial premises.

12 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

At ARCHITECTALIS, every approach is built on functionality, durability, and aesthetics. The firm transforms your ideas and needs into concrete, practical, and enjoyable living spaces, fully adapted to your lifestyle, aspirations, and budget.

26 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

5 achievements

Architect page

BRUITS Architecture is committed to addressing the contemporary challenges of building. Trained in France, Japan, and South Korea, the team develops a design approach that is both sensitive and rigorous, promoting architectural quality and environmental responsibility.

15 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Extension

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

1 achievement

HMONP-qualified architect based in Metz, she works with both private and professional clients on construction, renovation and extension projects throughout Moselle. Her approach combines attentive listening, bespoke design and architectural excellence to create functional, light-filled spaces tailored to each client's lifestyle.

22 property type

Single-Family Homes

Passive House / Eco-friendly

5 type of work

Extension

New Build

3 services

Design / Plans

Planning permission application

1 achievement

A values-driven architect, he has focused since his studies on environmental issues, creating strong connections between indoor and outdoor spaces, designing harmonious exterior environments, integrating buildings into their landscapes and optimising energy requirements.

With 23 years of experience as an architect — 15 years working as an employee and 8 years as an independent architect — he has developed extensive expertise throughout his career.

Today, he specialises in bioclimatic architecture and renewable energy, with a particular focus on designing passive houses in the Dordogne, notably in the Bergerac and Périgueux areas.

21 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

2 achievements

Arthur Montessuit, an architect trained at EPFL, based in Cluses in the heart of the Arve Valley. I support private and professional clients from the initial concept through to project completion, working on new-build homes, extensions, energy renovations, chalet and barn conversions, and commercial and professional premises. I work throughout Haute-Savoie, including the Arve Valley, Genevois, Annecy area, Chablais and beyond.

22 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

1 achievement

Architect page

Atelier KONJ supports private clients and professionals (engineering consultancies, contractors and project owners) throughout their architectural projects, from design through to completion, including technical studies. Combining creativity, technical expertise and rigorous execution, each project is developed with particular attention to functionality, architectural quality and compliance with the project's objectives.

26 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

We find
the architect for you

Search
On trouve l'architecte pour vous

1 achievement

Architect page

State-qualified architect based in Lille, Dé. architecture supports private clients and property owners with renovation, extension and transformation projects involving existing buildings, from feasibility studies through to construction supervision. The practice places a constant emphasis on making the most of what already exists, rather than systematically opting for reconstruction.

26 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application

Architect page

For each project he takes on, Marc Lassartesse pays particular attention to every detail, be it on the interior or the exterior.

18 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Extension

New Build

3 services

Design / Plans

Planning permission application

9 achievements

Architect page

ELKA architecture is a multidisciplinary agency offering a service ranging from permit filing, renovation and interior design. A transversality that highlights projects in your image.

17 property type

Single-Family Homes

Townhouses

14 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

7 achievements

Architect page

The ATELIER OVERWALL architecture agency supports individuals, professionals and communities in carrying out their project: construction, extension, rehabilitation and ensures all project management tasks from project design to receipt of works.

18 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Extension

New Build

5 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

Global approach including eco-design with passive or active systems, the use of bio-sourced materials and the integration of innovative solutions adapted to your needs, serving a healthy and sustainable habitat while meeting environmental and aesthetic requirements.

15 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

8 achievements

Architect page

ADNET ARCHITECTURE agency works on renovation, construction, extension and elevation projects on the Côte d'Azur and the Nice hinterland. It mainly supports private clients throughout their project for villas, apartments; but also for businesses, hotels, restaurants, or in the tertiary sector, always with a view to preserving the surrounding built environment.

21 property type

Single-Family Homes

Chalets / Wooden Houses

14 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Architect page

An architecture agency specializing in architectural design, renovation, and project management, Archi’Green supports both private individuals and professionals from project study through to site supervision, ensuring architectural quality, regulatory compliance, and environmental performance. The agency develops tailor-made projects, for both new builds and renovations, across residential, office, and commercial programs. It favors a contextual approach that is attentive to use, budget, and technical constraints, while fully integrating environmental and regulatory considerations. Each project is conceived as a unique response, combining architectural excellence, functionality, and sustainability.

21 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

1 achievement

Architect page

AL.SI Architecture supports private clients, professionals and co-ownerships with their transformation, renovation and new-build projects. The practice takes a bespoke approach that is both rigorous and sensitive, balancing architectural quality, cost control and careful consideration of how spaces are used.

23 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Extension

New Build

7 services

Design / Plans

Planning permission application