576 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 Treillières 44119

Tektolab is an architecture studio founded in 2014 by John Debaize, DPLG architect.

Tektolab today works on projects at the scale of individual homes, collective housing and public and private facilities. Certified Passive House Designer.

22 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

9 type of work

Extension

New Build

Renovation

6 services

Design / Plans

Planning permission application

Construction Management

Architecte in Strasbourg 67100

Dali Architecture is an architecture, design and project management agency in Strasbourg for professionals, investors and individuals. We travel within a 1 hour radius of Strasbourg to respond to your project.

24 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

15 type of work

Extension

New Build

Renovation

6 services

Design / Plans

Planning permission application

Construction Management

Architecte in La Hague 50440

Whether your project is of a few m², whether it is a renovation project, the construction of an individual house, or a larger project, the agency supports you to find a fair response adapted to your needs. problematic.

16 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

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Architecte in Lille 59000

Cailloux Bâtons Architecture, located in Hauts-de-France, is a socially and ecologically committed agency. She supports renovation and construction projects by prioritizing listening, innovation and sustainable techniques, such as the reuse of materials.

8 property type

Single-Family Homes

Passive House / Eco-friendly

Townhouses

6 type of work

Extension

New Build

Renovation

4 services

Design / Plans

Planning permission application

Construction Management

17 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

14 type of work

Extension

New Build

Renovation

6 services

Design / Plans

Planning permission application

Construction Management

Architecte in Nantes 44000

Founded in 2016 in Nantes by Raphaël Fichet, a graduate of the Nantes School of Architecture (2005), FARLAB was born after years of collaboration with renowned architectural firms. At FARLAB, their knowledge — gained through hands-on experience and professional practice — ensures expertise, flexibility, and precision. Their mission is to design spaces that reflect who you are, conceived to stand the test of time.

25 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

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we can define your project

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On trouve l'architecte pour vous

Architecte in Toulouse 31400

HMONP architect based in Toulouse city centre, Lize DÉSIRÉ founded her own agency, Lize Désiré Architecte, after several years working as a project manager within a Toulouse-based architecture firm.

With extensive experience in renovation projects, she knows how to enhance existing buildings while respecting their history and environment. Since January 2026, the agency has been a member of Envirobat Occitanie, a regional network of professionals committed to sustainable buildings

24 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

17 type of work

Extension

New Build

Renovation

7 services

Design / Plans

Planning permission application

Construction Management

Architecte in Porto-Vecchio 20137

Nea Architecture designs soft and harmonious spaces, inspired by the Mediterranean nature and raw materials. Whether new builds, renovations, or extensions, each project becomes a unique cocoon, imagined with attentiveness, simplicity, and authenticity.

16 property type

Single-Family Homes

Chalets / Wooden Houses

Townhouses

10 type of work

Extension

New Build

Renovation

5 services

Design / Plans

Planning permission application

Construction Management

Architecte in Valorbiquet 14290

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

Chalets / Wooden Houses

13 type of work

Extension

New Build

Renovation

5 services

Design / Plans

Planning permission application

Construction Management

25 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

13 type of work

Extension

New Build

Renovation

6 services

Design / Plans

Planning permission application

Consulting