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.

ARCHITECTURE a2+ develops architecture that is attentive to context and use, capable of exploring both traditional and contemporary approaches. Each project is conceived as a singular response, born from listening to the site, its uses, and the people involved, reconciling architectural rigor with sustainable integration into its environment.

18 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

1 achievement

Architect page

Bossonney Architecture is an Annecy-based firm with 15 years of experience, operating across Haute-Savoie with a network of highly skilled local craftsmen. The firm supports all types of projects—renovation, extension, new construction, interior design, or consulting, with a commitment to quality, precision, and personalized guidance.

16 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Architect page

Atelier Gouron supports you throughout your construction, renovation, extension, new-build and energy-efficiency projects. As a HMO-NP qualified architect, energy auditor and MaPrimeRénov' advisor, the studio offers a turnkey solution, whatever the nature of your project.

24 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Architect page

Architectural and technical expertise

Monitoring and management of architectural studies

Site management (in separate batches or general contractor)

Teamwork (clients, design offices, architect)

18 property type

Single-Family Homes

Townhouses

14 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

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3 achievements

Architects trained in “Passive Construction”, we are designers who listen to our clients, taking into account their identity as well as the spirit of the places .

8 property type

Single-Family Homes

Passive House / Eco-friendly

5 type of work

Extension

New Build

3 services

Design / Plans

Planning permission application

Sébastien Di Vora Architect puts his expertise and constantly renewed know-how at the service of your projects by offering demanding architecture emphasizing the accuracy of interventions and rigorous monitoring while promoting proximity and listening .

14 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

APA is an architecture and project management studio established in a rural environment, with Benoît De Cillia in Puget-Théniers and Coline Le Poëc in Sauveterre-de-Rouergue. Its existence stems from the desire to bring architectural quality and well-being closer to clients and into every project, regardless of its scale. To achieve this, APA commits with conviction, step by step, from the initial concept to the execution of the works entrusted to them.

18 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Extension

Renovation

6 services

Design / Plans

Planning permission application

6 achievements

Architect page

For over ten years, Ove Architecture has developed comprehensive expertise in architecture and interior architecture. The studio designs bespoke residential and commercial projects, providing complete support from concept to completion, with high standards and consistency.

14 property type

Single-Family Homes

Smart Homes

11 type of work

Extension

Renovation

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

5 achievements

Architect page

Eraiki.studio is an architecture firm based in Bordeaux, serving the Arcachon Bay area and the Basque Coast through to the Spanish border. Led by HMONP architect Jon Fernández Mata and CFAI-certified interior architect Jean-Maxime Cadix, the practice specialises in the rehabilitation, renovation, and extension of distinctive properties. Combining architectural and interior design expertise, Eraiki.studio delivers bespoke projects from concept to completion, with a strong focus on contextual design, craftsmanship, and attention to detail.

26 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

30 years of project experience for all types of private or public buildings. Specialist in the renovation, transformation, extension and enhancement of properties and support in all rehabilitation, extension, energy renovation and interior design projects.

13 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Experience and Serenity

Since 1988, Hervé RABINEAU has been designing all types of private and professional buildings for his clients. He works extensively with private individuals, creating new villas and supporting them throughout their rehabilitation, extension, or renovation projects.

23 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

Based between Landes and the Basque Country, FB Architecture designs contemporary, bright, and contextually anchored projects. Sustainable materials, dialogue with local artisans, and client attention guide our bespoke approach.

13 property type

Single-Family Homes

Chalets / Wooden Houses

7 type of work

Extension

New Build

3 services

Design / Plans

Planning permission application

We find
the architect for you

Search
On trouve l'architecte pour vous

3 achievements

Architect page

Gilbert PORZIO is an experienced architect with more than 35 years of practice, working on projects ranging from private homes and residential developments to large-scale property and specialist commissions. His years in New York City shaped a rigorous approach to design, combining attention to detail, budget control, technical expertise, and architecture tailored to each client's needs. Passionate about his profession, he is committed to creating projects that are both functional and aesthetically refined.

24 property type

Single-Family Homes

Chalets / Wooden Houses

12 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Architect page

Nacera Mahi, a DPLG architect, proposes a refined and elegant architecture that matches perfectly with the needs of the client. The project comes to life through a global approach where each stage is valued until its final realisation.

21 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application

2 achievements

An agency managed by Delphine GALLERAND-RIBEAUDEAU is also located at 10 Avenue Fournier Sarlovèze in MONTLUCON (03100). Telephone details: 0470030942.

16 property type

Single-Family Homes

Chalets / Wooden Houses

12 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

Graduated with a Master’s degree in Architecture from the Politecnico di Milano and an engineering degree from the École Spéciale des Travaux Publics, du Bâtiment et de l’Industrie (ESTP), Charles-Emile PERCHAUD obtained his authorization to practice as an independent project manager in 2018 at the École Nationale Supérieure d’Architecture de Versailles. He has been registered with the Île-de-France Order of Architects since 2024, alongside the creation of his firm. After ten years of experience in architectural practices working on large-scale tertiary, institutional, and interior architecture projects, he founded Atelier Perchaud to offer an expanded response to today’s and tomorrow’s construction and renovation needs.

21 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
Architect page

XXA is a multidisciplinary architectural agency, created by RICHARD POUZADOUX in 2001 in LILLE.

XXA responds to the most complex and unexpected requirements, our experience and our analytical approach support you by providing you with peace of mind throughout the phases of your project.

13 property type

Single-Family Homes

Smart Homes

12 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

Architecture Agency / Interior Architecture - New - Renovation - Residential, Commercial, Catering, Hospitality

Contemporary or traditional architecture

Ile de France sector, Loiret

17 property type

Single-Family Homes

Townhouses

16 type of work

Extension

New Build

6 services

Design / Plans

Planning permission application

Architect page

With varied experience and know-how in eco-design, the JAR workshop supports you with your new or old projects, public and private, in order to create together the response that suits you!

12 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Extension

New Build

5 services

Design / Plans

Planning permission application

3 achievements

Architect page

In the heart of Savoie, the MS Architecte agency combines creativity and technical expertise to transform your architectural dreams into reality. With a personalized approach, we ensure the success of your projects, from renovations to new construction.

15 property type

Single-Family Homes

Chalets / Wooden Houses

9 type of work

Extension

New Build

4 services

Design / Plans

Planning permission application