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 Lagny-sur-Marne 77400

L'atelier bauve is an architectural studio established in Seine-et-Marne for around a hundred years. Its main strengths come from its ability to adapt to all types of projects: collective housing, industrial buildings, offices, public buildings, hotels, etc.

10 property type

Multi-unit Residential

Retail

Hotels - Restaurants

9 type of work

Extension

New Build

Renovation

3 services

Design / Plans

Planning permission application

Construction Management

5

Architecte in Saze 30650

Xabi CLAVERIE designs and renovates projects ranging from individual homes to large-scale developments, including public-access buildings such as hotels, restaurants, and office spaces. He places people and simplicity at the core of every project, combining innovation, respect for usage, and sustainability to create responsible architecture adapted to today’s and tomorrow’s challenges.

19 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

13 type of work

Extension

New Build

Renovation

3 services

Design / Plans

Planning permission application

Construction Management

Architecte in La Garenne-Colombes 92250

JCA GCA is an architectural practice that combines the complementary experience of two architects. It embraces a broad programmatic scope—public facilities, housing, renovation and heritage enhancement—with the ambition of developing narratives in close dialogue with the sites in which they operate.

15 property type

Single-Family Homes

Townhouses

Country Homes

10 type of work

Extension

New Build

Renovation

3 services

Design / Plans

Planning permission application

Home pre-purchase advice

We find
the architect for you

Search
On trouve l'architecte pour vous

Architecte in Paris 75017

Interia Construction designs and transforms high-end spaces in Paris and the Île-de-France region: first through architecture and design, then through execution, with the same team and the same level of excellence. Created in 2019 and led by three complementary partners, this human-sized structure places high standards, flexibility and proximity at the heart of every project.

24 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

15 type of work

Extension

New Build

Renovation

7 services

Design / Plans

Planning permission application

Construction Management

Architecte in Paris 75015

SAAP Architecture designs bespoke, sustainable, and well-considered projects for private clients, companies, and public authorities. The practice works on renovation, transformation, and new-build projects with rigor, attentiveness, and a strong sense of place—always closely connected to the context of the site and the project.

14 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

10 type of work

Extension

New Build

Renovation

4 services

Design / Plans

Planning permission application

Construction Management

Architecte in Valence 26000

Cheze Architectes designs projects by adapting to a wide range of uses, contexts, and constraints. The agency develops a direct and committed approach, with a single point of contact throughout the project, and strong experience in collective housing that is now applied to diverse programs, from residential to commercial and activity-based projects.

11 property type

Multi-unit Residential

Retail

Hotels - Restaurants

9 type of work

Extension

New Build

Renovation

5 services

Design / Plans

Planning permission application

Consulting

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 Levallois-Perret 92300

Founded by Etienne LOMBARD, Etienne LOMBARD ARCHITECTE is a committed architectural practice that carefully listens to each client in order to meet their expectations and needs. Every project responds uniquely to the various challenges within which it is set. The approach is always tailored to the client’s program and budget, as well as to the geographical context of the site.

12 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 Paris 75016

Cathala Architectes develops high-performance projects integrating bioclimatic design, dynamic thermal modeling, and innovative construction solutions. The agency ensures strict compliance with BEPOS standards, optimizing envelopes, systems, and flows to deliver sustainable buildings that meet current environmental requirements.

14 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

14 type of work

Extension

New Build

Renovation

5 services

Design / Plans

Planning permission application

Construction Management

Architecte in Anduze 30140

Based in Anduze, Belle Ville Atelier d’Architecture supports renovation, extension, and construction projects throughout the south of France and beyond. With more than ten years of experience, the agency has developed a demanding and tailor-made approach, shaped by a practice built in Paris and now applied to projects of various scales.

24 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

10 type of work

Extension

New Build

Renovation

7 services

Design / Plans

Planning permission application

Construction Management

5

Architecte in Celles-sur-Belle 79370

An HMONP-certified architect based in the Pays Mellois region, Colas MORNET practices an architecture rooted in its territory, attentive to use, and engaged with contemporary challenges. With an atypical background in construction (BTP), the non-profit sector, and event management before becoming an architect, he supports a wide range of projects: housing, renovation, agricultural buildings, and cultural spaces.

He prioritizes the rehabilitation of existing structures, bioclimatic approaches, local materials, and low-tech systems. He places pedagogy and transparency in decision-making at the heart of his relationship with clients.

24 property type

Single-Family Homes

Passive House / Eco-friendly

Chalets / Wooden Houses

16 type of work

Extension

New Build

Renovation

7 services

Design / Plans

Planning permission application

Construction Management