579 architects Vertical expension

Architect for a Roof Raise

Is your home becoming too small? A roof raise — or vertical extension — could be the ideal solution to increase your home's living area. Whether to accommodate a growing family or to make up for purchasing a property that is too small, the reasons homeowners choose this option are many.

Whatever the case, a roof raise offers the possibility of adding extra square footage without sacrificing a terrace or garden, as is sometimes the case with a traditional side extension.

However, raising the roof is a complex undertaking that requires the involvement of a specialist architect in this field.

Why is it advisable to hire a specialist architect for a roof raise?

Having an architect on board is a major asset, as raising the roof is far more involved than adding a ground-level extension to a terrace.

This type of work means touching the very structure of the building and carefully analysing the original construction to determine whether the addition is feasible. The foundations and load-bearing walls must be able to support the additional structure — or will need to be reinforced.

Here are the main reasons to call on a specialist architect for a roof raise:

Technical constraints involved in the works
A roof raise is an increasingly sought-after solution in high-density urban areas, where horizontal construction is difficult. However, it requires a feasibility study and depends heavily on the quality of the existing foundations and structure. A soil survey is also necessary to ensure the long-term durability of the new construction. A specialist architect in roof raises has the knowledge and expertise required to successfully carry out this type of project.

Compliance with current regulations
A specialist architect in roof raises is well-versed in the regulations applicable in each region of France. Maximum height, number of permitted storeys — there are strict rules governing how high a property can be raised. A precise set of specifications must be adhered to.
An architect saves you valuable time by thoroughly assessing your project and proposing a plan that complies with the rules of your town or municipality.

Professional guidance in redistributing space
Following a roof raise, it is sometimes necessary to rethink the layout of your home. While the existing spaces may remain unchanged, it can be necessary to modify them — for instance, to add a staircase or relocate certain rooms, such as bedrooms, to the newly created upper level.
An architect advises and supports their clients in arranging the new spaces, with the aim of creating a home that is both practical and pleasant to live in.

3 achievements

Architect page

ASSA Architectes is a five-person firm located in the center of Grenoble.

We work in all areas of construction and carry out all our own projects.

We are trained in the DDQE (French Environmental Quality and Quality) and can carry out bioclimatic projects.

18 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

3 achievements

Architect, he has also developed expertise in general contracting, relying on the strength and structure of the LES ARCHITECTEURS group. This dual approach—architectural design and turnkey project delivery—allows him to offer his clients comprehensive control over their projects.

25 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

5 achievements

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Studio Iroko is an architecture agency specialized in the design of sustainable buildings. The team is at your disposal to discuss your construction, renovation, or extension project.

19 property type

Single-Family Homes

Passive House / Eco-friendly

6 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

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L’Agence Spatiale is an architecture and interior design firm focused on eco-design, located in Uriage near Grenoble, in the Auvergne-Rhône-Alpes region. It works on renovation, extension, elevation, construction, and interior design projects.

17 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

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7 services

Design / Plans

Planning permission application

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A creative and analytical architect, Robin BESSON designs optimized, luminous, and intuitive spaces inspired by a systemic approach rooted in his research. He supports his clients with attentive listening and precision, transforming each project into a harmonious, efficient, and deeply human place where aesthetics, functionality, and well-being naturally reinforce one another.

9 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

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ARCHI’MAKER is an architecture firm based in the Nantes region, promoting the use of bio-based materials and bioclimatic architecture. Located in Héric, the agency operates within a 50 km radius on various types of projects, including residential buildings (new and renovation), offices, and public facilities. It supports you from design through to project handover.

17 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

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4 services

Design / Plans

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1 achievement

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Florent LEONHARDT works on construction, renovation, rehabilitation, and restructuring projects in urban as well as suburban areas, including housing, residential buildings, workplaces, cultural and religious spaces, offices, educational or institutional facilities, as well as their outdoor extensions in the countryside, mountains, parks, and gardens.

27 property type

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Passive House / Eco-friendly

15 type of work

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6 services

Design / Plans

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Arta Studio is an architecture firm led by Marion Arotçarena and Xanti Amado, two rigorous and ambitious architects. Each project, whether new construction or renovation, is carefully studied with sensitivity, taking into account all site constraints as well as the client’s needs and aspirations. The history of the place and the region also play a key role in shaping the direction of each project.

16 property type

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Passive House / Eco-friendly

13 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

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Architect based in Le Passage, near Agen, Quentin GAGO supports both private clients and professionals across the South-West of France: Lot-et-Garonne, Gironde, Gers, Landes, and Pyrénées-Atlantiques. His approach is rooted in listening, dialogue, and personal commitment—delivering architecture that is simple, durable, and deeply anchored in each context.

21 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

Architect page

Marc BROSSET HECKEL, an architect based in Grenoble, offers full or partial support for all types of architectural projects. He is involved from feasibility studies to project delivery, including bespoke design, administrative procedures, contractor consultation, and construction supervision.

His approach adapts to the specific needs of each client, whether for a comprehensive mission covering all stages from design to completion, or for targeted support such as obtaining a building permit or conducting a feasibility analysis. The goal is to provide a personalized, rigorous response tailored to the expectations and constraints of each project.

26 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

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Anais NGANDA is an architect offering personalized architectural services, from home extensions and major renovations to planning regularization and construction supervision. With a clear, client-focused approach, she delivers practical, creative and accessible solutions tailored to every project.

11 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

3 achievements

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

11 type of work

Vertical expension

New Build

5 services

Design / Plans

Planning permission application

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Coquille is an architectural practice founded in Finistère in 2026 by Elisabeth Biville.

Its practice takes its name from Paul Valéry’s text L’Homme et la coquille, which explores the relationship between a form and what gives rise to it.

Coquille pays particular attention to the uniqueness of each project and to its coherence with a context, culture and patterns of use shaped over time. Whether transforming, extending or building, the practice seeks to anchor each project within its environment, with careful consideration for the places, materials and people who bring them to life.

15 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Vertical expension

New Build

7 services

Design / Plans

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1 achievement

Mathieu GAUTHIER, an architect for over 20 years, I am passionate about my profession.

As the director of GM Architecte, I work on new-build, renovation and extension projects. My approach to your project is first and foremost based on listening to your needs and aspirations, as well as precision and dialogue. My aim is to create a project that reflects who you are and that truly belongs to you.

25 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

Founded in 2011 in Laillé, HENRIO ARCHITECTE works with both public- and private-sector clients looking for functional, thoughtfully designed spaces.

Enhancing the urban and architectural qualities of existing buildings, particularly through the renovation and rehabilitation of historic properties, is the guiding principle behind the projects we develop.

We combine our expertise and creative sensitivity to work with you on a project that reflects your needs, expectations and budget, while taking into account the inherent qualities and character of your existing bui

25 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

2 achievements

Based in Saint-Malo and Paris, DISCORS is an architecture practice that places resources and collaboration at the heart of its work. It develops joyful, sustainable and context-driven architecture, combining constructive rationality, economic efficiency and spatial generosity to create more for the people who inhabit its buildings.

12 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

Together
we can define your project

Make a free appointment with our specialist advisor.

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On trouve l'architecte pour vous

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Behind Atelier&Liz is the experience and vision of Élise Lusseaud, a DPLG-qualified architect, committed to an architecture that pays close attention to places, how they are used and the quality of life of those who inhabit them.

Her perspective has been shaped across different scales — from individual homes and buildings to neighbourhoods and cities. This diverse experience enables her today to design projects that are

9 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Atelier Artefact is an architecture practice based in Valence, in the Drôme region. It works on renovation, transformation, extension and new-build projects, with particular attention to the character of each place, how spaces are used and the way they are built.

Each project is developed with a focus on simplicity, precision and spatial quality.

26 property type

Single-Family Homes

Passive House / Eco-friendly

13 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Architect page

In order to ensure effective coordination and the success of your project, the architect and his firm are dedicated to effective exchange and in-depth dialogue with their clients. In addition, ARCHI-PAT enlists the expertise of a full network of partners including specialists in urban planning, architecture, and operational and pre-operational research. 

27 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

3 achievements

After earning her degree and honing her skills with several Strasbourg-based architecture practices, Magalie De Oliveira founded her own business to leave her mark on the world of architecture. Concerned with the well-being of her clients, the architecture designs unique projects tailored to each one. 

14 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Vertical expension

New Build

5 services

Design / Plans

Planning permission application