564 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.

15 achievements

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Architecture / Consulting / Engineering

Summa is an agency that does not hesitate to think outside the box, offering you tailor-made services.

8 property type

Single-Family Homes

Townhouses

13 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

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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

15 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

Architect specialized in residential design, Marion GRANDIN has been supporting private clients for nearly ten years with their single-family homes, extensions, renovations, and rehabilitation of existing buildings. She also works on collective housing projects and as a condominium architect. As a single point of contact, she designs tailor-made, sustainable spaces adapted to your daily life, from feasibility studies and initial sketches through to construction supervision.

18 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Vertical expension

New Build

6 services

Design / Plans

Planning permission application

1 achievement

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PRONAOS Architecture specializes in the restoration, rehabilitation, and preservation of built heritage. The agency assists owners of castles, historic monuments, prestigious residences, as well as traditional rural homes and agricultural buildings throughout every stage of their project. Its services include construction planning, grant and funding applications, building permit preparation, contractor selection, and construction supervision.

15 property type

Single-Family Homes

Townhouses

11 type of work

Vertical expension

Renovation

7 services

Design / Plans

Planning permission application

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Atelier SAJ is an architectural practice led by two partner architects, with offices in Toulouse and Lille and projects throughout France. From new-build construction and extensions to interior design and renovation, we support private clients, businesses and public-sector organisations from the initial concept through to construction supervision, providing bespoke solutions, a strong focus on energy performance and rigorous budget management.

Recent publications:

Archi+ 2023

Archi+ 2026

15 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

5 achievements

As an architect based in Toulouse, I am committed to building on the recognised expertise and extensive experience of SCHWAB, the practice founded by my father in 1955.

Historically active across the broad housing sector — from private homes and residential developments to serviced residences — we have expanded our expertise across the fields of Architecture, Urban Planning, Landscape Design, Design and Consulting.

9 property type

Multi-unit Residential

Hotels - Restaurants

9 type of work

Vertical expension

New Build

4 services

Design / Plans

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For each project he takes on, Marc Lassartesse pays particular attention to every detail, be it on the interior or the exterior.

18 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Vertical expension

New Build

3 services

Design / Plans

Planning permission application

2 achievements

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Welcome to Bleu de Blanc, an architectural and interior design studio based in Quimper, Brittany, where your dreams and ideas take shape in color and in reality. Driven by a passion for creating spaces that reflect both personality and purpose, Bleu de Blanc transforms every project into a unique and inspiring journey.

21 property type

Single-Family Homes

Passive House / Eco-friendly

16 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

Together
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5 achievements

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3m³ architect develops construction and renovation projects for houses and apartments in Paris and neighboring departments. Through attentive listening, our writing is modular and at the service of the client, for a tailor-made design.

14 property type

Single-Family Homes

Passive House / Eco-friendly

10 type of work

Vertical expension

New Build

5 services

Design / Plans

Planning permission application

6 achievements

LetH architecture was born to develop a culture of exchanges and meetings which constitutes the real starting point for architectural reflection aimed at bringing buildings into resonance with their environment.

19 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Vertical expension

New Build

3 services

Design / Plans

Planning permission application

1 achievement

An architect who works closely with her clients to create a project that suits them, Clara PLANES will listen to you whatever your project may be.

12 property type

Single-Family Homes

Chalets / Wooden Houses

11 type of work

Vertical expension

New Build

5 services

Design / Plans

Planning permission application

1 achievement

Genèse Architecture Studio, founded in 2023 in Bezannes by Marion Sautreau (HMONP), designs tailor-made, sustainable, and bold spaces, each emerging from clients’ specific needs. Combining minimalism, eco-responsibility, and sensitivity, the studio works across all types of projects: individual or collective housing, public facilities, industrial buildings, and wine-related architecture.

13 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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6 achievements

Maslouhi Bonnet Architectes supports you in all your projects, whether new construction or renovation, with attentive and thoughtful listening to your needs. This attention makes each project a unique creation, placing creativity at the service of your vision.

9 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

Specialising in renovation and eco-conscious construction, Lisières works on all types of projects, from design through to construction, combining bioclimatic principles with consultation and collaborative approaches where appropriate.

Lisières is based at the foothills of the Cévennes, near Alès. The studio supports private clients, local authorities, associations and businesses throughout their projects, from initial feasibility through to final handover, including sketch designs, planning applications or prior declarations, quotation reviews and contractor negotiations.

17 property type

Single-Family Homes

Passive House / Eco-friendly

12 type of work

Vertical expension

New Build

7 services

Design / Plans

Planning permission application

Architect page

Mindful of the consequences of climate change and especially natural risks such as flooding and submersion, architect  Julie Salou founded her practice on a commitment to environmentally-friendly buildings and urban planning.

17 property type

Single-Family Homes

Passive House / Eco-friendly

14 type of work

Vertical expension

New Build

4 services

Design / Plans

Planning permission application

2 achievements

Architect page

Calling on Arkoncept means ensuring that your project will be in line with your needs, your desires and the constraints inherent to each project. The tailor-made support from A to Z will guarantee you peace of mind and assurance of a well-executed project.

19 property type

Single-Family Homes

Passive House / Eco-friendly

17 type of work

Vertical expension

New Build

6 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

3 achievements

RELEV is a joyful and committed heritage architecture firm, specializing in the custom restoration of historic buildings. We work by hand, with you, to create something beautiful, fair, and meaningful.

10 property type

Single-Family Homes

Passive House / Eco-friendly

9 type of work

Vertical expension

Renovation

4 services

Design / Plans

Planning permission application

6 achievements

With over 7 years of experience, the architect works on a variety of property types including individual homes, professional buildings, apartments, hotels and restaurants, collective residential and commercial buildings.

7 property type

Single-Family Homes

Townhouses

8 type of work

Vertical expension

New Build

4 services

Design / Plans

Planning permission application

1 achievement

The architect benefits from a vast experience that allows him to best accommodate all of his clients’ requests.

17 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Vertical expension

New Build

4 services

Design / Plans

Planning permission application

Architect page

Hugo Enlart and his firm Hotel Architecte champion the use of recycled and durable materials and their raw implementation. The firm also privileges the spatial quality of its projects.

10 property type

Single-Family Homes

Passive House / Eco-friendly

8 type of work

Vertical expension

New Build

4 services

Design / Plans

Planning permission application