565 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.

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Architectural agency based in Colmar, carrying out all types of projects (new, renovation, housing, offices, commercial, agricultural, industrial, etc.), from the town planning file mission to monitoring the work in full mission.

21 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Vertical expension

New Build

5 services

Design / Plans

Planning permission application

5 achievements

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Yann Chateau, DESA architect, specialized in carrying out projects for individuals: Construction, renovation, redevelopment, extension, elevation.

You have a project, we make it happen.

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

5 achievements

The projects entrusted to Baptiste VAISSADE often lie at the heart of his clients’ personal lives. It is therefore essential that every detail is carefully considered, from the initial design concepts to final delivery. He pays particular attention to material selection, their practical use, and the long-term durability of each project.

23 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Vertical expension

Renovation

7 services

Design / Plans

Planning permission application

Architect page

Design and creation of living, working, and leisure spaces... residential building design, house design, apartment design, interior architecture, and landscapes.

We create for and with you!

10 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Vertical expension

New Build

4 services

Design / Plans

Planning permission application

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Based in Paris 19, Antoine Binet Architect supports individuals and professionals on all types of construction, renovation and compliance projects, from sketch to construction site.

8 property type

Single-Family Homes

Townhouses

9 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

2 achievements

Based in Provence, Kroquis Architecture designs bespoke, sustainable projects that are rooted in their environment. Attentive, combining rigor, common sense, and good humor, the studio handles each project with care and simplicity.

16 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

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As a certified HMONP architect, I am passionate about my work. My expertise covers renovations and extensions as well as new construction, whether public or private, and at all scales.

20 property type

Single-Family Homes

Townhouses

13 type of work

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New Build

5 services

Design / Plans

Planning permission application

6 achievements

21 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

Together
we can define your project

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An HMONP-certified and registered architect, MAR, and certified energy auditor, Dylan LEVY is the director of LEV2A Architecture. He supports public and private clients in their construction, renovation, and audit projects, combining expertise in design, regulation, energy performance, and project management. His approach blends high standards, transparency, and long-term commitment at every stage.

19 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Vertical expension

New Build

4 services

Design / Plans

Planning permission application

10 achievements

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

14 type of work

Vertical expension

New Build

5 services

Design / Plans

Planning permission application

4 achievements

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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

13 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

Since 2007, Corentin DESMICHELLE’s studio has been developing an architecture of restraint at every scale, from individual housing to public facilities. Specializing in passive design and the use of bio-based materials, he favors an ecosystem-based and circular approach. Whether for new builds or the renovation of historic structures, each project is conceived as a living resource reserve, aiming for environmental excellence and zero waste.

27 property type

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

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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

Single-Family Homes

Passive House / Eco-friendly

15 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

Architect page

Carré Bleu Group has been designing and delivering architecture and engineering projects for over 40 years. With more than 10,000 completed projects, it combines high standards, innovation, sustainability, and enthusiasm to meet the needs of its clients.

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

2 achievements

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

11 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

1 achievement

Line Calder has been practising as an architect since obtaining her DPLG architecture degree, awarded by the French government in 1997, following studies that included a period at the University of Chicago.

She specialises in projects involving existing buildings, including alterations, interior reconfigurations, extensions, changes of use, restoration, rehabilitation, subdivision and more.

Her practice is based 70 km west of Paris, in the small village of Boutigny (28410), in Eure-et-Loir, near Houdan (78550) in the Yvelines. Her area of practice extends northwards to the banks of the Seine around Mantes (78200), eastwards to the outskirts of the Rambouillet forest (78120), southwards towards Chartres (28000), with its cathedral on the horizon, and westwards as far as the valleys around Mortagne-au-Perche (61400).

It is worth noting that in 2017, after 20 years of professional practice in France, she returned to Australia, her home country, to broaden her experience. She eventually resumed her architectural practice in 2025, bringing with her a renewed sense of enthusiasm and fresh perspective.

21 property type

Single-Family Homes

Passive House / Eco-friendly

7 type of work

Vertical expension

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

1 achievement

AL.SI Architecture supports private clients, professionals and co-ownerships with their transformation, renovation and new-build projects. The practice takes a bespoke approach that is both rigorous and sensitive, balancing architectural quality, cost control and careful consideration of how spaces are used.

23 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

3 achievements

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Sophie Caraux, founder of PIVA Architecture, is a committed architect specializing in sustainable, environmentally responsible design. Combining ecological principles, local expertise, and innovative building techniques, she supports both public and private clients throughout the Vosges region and neighboring areas.

18 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

2 achievements

Architect & Interior Architect | Hospitality & Residential

Design & Construction Management

Trained at several leading Parisian architecture firms, I design and manage exceptional projects that live up to your ambitions. Every space is defined by its details — I bring the same high standards to every project, through to completion.

I work closely with each client with creativity and precision, delivering unique projects that are carefully considered down to the finest detail and executed with the utmost care.

15 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

Caroline Laffay is a State-Qualified Architect (Architecte DE-HMONP) and Heritage Architect, based in Metz, Moselle, since 2022.

Working throughout the Grand Est region, she puts her expertise in existing and historic buildings at the service of both public and private clients. Her practice covers building assessments, heritage feasibility studies, architectural project management for historic monuments, as well as major renovation and restructuring projects.

19 property type

Single-Family Homes

Passive House / Eco-friendly

11 type of work

Vertical expension

Renovation

6 services

Design / Plans

Planning permission application