575 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.

Architecte in Nogent-sur-Marne 94130

Jorge CARDENAS is an architect and certified passive building designer, founder of Atelier Cardenas Architecture, with more than twenty years of experience across diverse operations ranging from new construction to the transformation of existing buildings, supporting each project from design to completion with a rigorous and sustainable approach.

22 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

10 type of work

Extension

New Build

Renovation

3 services

Design / Plans

Planning permission application

Construction Management

5

Architecte in Paris 75002

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

Chalets / Wooden Houses

13 type of work

Extension

New Build

Renovation

7 services

Design / Plans

Planning permission application

Construction Management

Architecte in Fréjus 83600

Listening, sharing, designing.

In a world where everything is accelerating and digital technologies are increasingly present, Véronique XUEREF invites you to take the time to share your construction ideas and aspirations.

Together, we will design a project that reflects who you are, because each of us is unique.

Let’s take the time to pause and create spaces that truly match your lifestyle.

20 property type

Single-Family Homes

Smart Homes

Townhouses

16 type of work

Extension

New Build

Renovation

6 services

Design / Plans

Planning permission application

Construction Management

We find
the architect for you

Search
On trouve l'architecte pour vous

Architecte in Marseille 13004

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

Chalets / Wooden Houses

11 type of work

Extension

New Build

Renovation

6 services

Design / Plans

Planning permission application

Construction Management

5

Architecte in Paris 75020

The agency supports both private and public project owners in restoration, rehabilitation, transformation, and extension projects when a building requires in-depth understanding before any intervention. Old houses, mansions, apartments located in heritage buildings, annexes, rural buildings, protected monuments, or complex sites: every place has its own history, construction logic, and fragilities, which SCALA Architectes Associés carefully analyzes with precision.

26 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

9 type of work

Extension

New Build

Renovation

4 services

Design / Plans

Planning permission application

Construction Management

Architecte in Douarnenez 29100

Founded in 2025 by François Pendelio Allard, HMONP architect, Reuz, Atelier d’architecture, explores projects of all scales with commitment and curiosity.

Aware of the environmental challenges of our time, Reuz advocates for a thoughtful and ecological approach, attentive to both civic and environmental concerns.

25 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

11 type of work

Extension

New Build

Renovation

7 services

Design / Plans

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

Architecte in Paris 75020

V.G.A. – Vincent Gillot Architecture – is an architecture agency founded in Paris in the summer of 2020, committed to social and environmental innovation. In a world facing increasingly complex challenges, the agency believes in architecture’s ability to question the way we live, rethink our societies, and inspire new ways of inhabiting the world.

27 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

11 type of work

Extension

New Build

Renovation

5 services

Design / Plans

Planning permission application

Construction Management

Architecte in PARIS 75019

At the architectural firm ENTREVUES, everything begins with the meeting between an architect (DPLG) with training in interior architecture, and clients with a vision for a personal project to create or tranform a space and its immediate surroundings. 

6 property type

Single-Family Homes

Passive House / Eco-friendly

Townhouses

11 type of work

Extension

New Build

Renovation

4 services

Design / Plans

Planning permission application

Construction Management

Architecte in VALENCE 26000

The principal ambition of the architectural firm Ploma is to respond to their clients’ objectives, offering them the best prospects and possibilities for the development of their projects. 

9 property type

Retail

Hotels - Restaurants

Commercial - industrial

5 type of work

Extension

New Build

Building Upgrades

4 services

Design / Plans

Planning permission application

Construction Management

Architecte in Paris 75009

Nicolas Bellia and the studio Atelier TKN work to design authentic, well-considered projects in collaboration with specialised contractors. Together, they cultivate a sustainable, environmentally-friendly design approach, with constant attention to detail. 

7 property type

Single-Family Homes

Passive House / Eco-friendly

Smart Homes

9 type of work

Extension

New Build

Renovation

4 services

Design / Plans

Planning permission application

Construction Management