Creation of a mezzanine: all you need to know before you start
Creating a mezzanine is a clever solution to gain space without changing the ground surface. Whether it's for an extra room, an office corner or a relaxing area, the mezzanine seduces by its practical and aesthetic side. But before starting, it is essential to understand the technical, regulatory and financial aspects of the project. Here is a complete guide to all about the creation of a mezzanine :
Why create a mezzanine at home?
Gain space without pushing walls
In dwellings where the floor surface is limited but the height under generous ceiling (minimum 2.40 m to 2.60 m), the creation of a mezzanine allows to exploit the available volume in height. This creates an extra room without expanding the house. A real gain in living space without encroaching on the ground.
A clever layout for small dwellings as for large heights
Whether in a studio, loft or house with cathedral ceiling, the mezzanine fits all configurations. It becomes an extra room, workspace, library or playroom. The space below can be used for a dressing room, kitchen or living room.
An aesthetic and customizable solution
Wood, metal, glass: there are many materials and styles. A mezzanine can give an industrial, Scandinavian or contemporary seal to an interior. It becomes a strong architectural element, often at the centre of a room's design.
What regulation to build a mezzanine?
Do you need a building permit or a construction declaration?
- For a mezzanine of less than 5 m2 and without changing the facade or structure, no steps are necessary.
- Between 5 m2 and 20 m2 : one prior declaration is mandatory.
- Over 20 m2 : you need a building permits.
In condominiums, it is also necessary to have the project validated at a general meeting.
Compliance with minimum ceiling heights
To make a mezzanine comfortable:
- Planned at least 1.80 m above and below the mezzanine.
- Ideal: 2 m or more for optimal comfort.
Safety, guardrails and technical standards
Installation railings is indispensable, even for a mezzanine child.
- Standard NF P01-012: minimum height 1 metre, with space between the lower bars < 11 cm.
- The floor shall withstand a load of 150 kg/m2 minimum, or even more depending on usage.
The different types of mezzanines possible
Structural Mezzanine (carrier floor)
Built as a real floor, with beams and floor integrated into the housing structure. Ideal for daily use (room, office).
Mezzanine in kit or removable
Simpler and faster to place, sold in large areas or custom. Suitable for secondary or auxiliary spaces.
Mezzanine on poles or suspended
- On poles : ground support, easier to integrate into an existing housing.
- Hanged : attached to the supporting walls or ceiling, offers a more aerial effect but requires technical verification.
Mezzanine metal vs mezzanine wood : comparative
| Criteria | Wood | Metal |
|---|---|---|
| Aesthetic | Warm, natural | Modern, industrial |
| Weight | Lighter | Heavy |
| Average cost | €€ | €€€ |
| Sustainability | Good | Very good |
| Lay | Easier to work | More technical |
What work is needed?
Feasibility study (height, existing structure)
Pre-diagnosis is essential: ceiling height verification, solidity of carrying walls, existing floor, etc.
masonry work or floor strengthening
For a structural mezzanine, it may be necessary to strengthen or create a bearing floor with wooden beams or metal IPN. This is a big deal.
Installation of the access staircase
The staircase takes from the floor:
- Law : comfortable but bulky.
- Rotating quarter : more compact.
- Spiral staircase or milling scale : gain of space but less practical.
Finishing and integration into existing
- Covering (glass, curtain, removable partition)
- Suitable lighting (recessed spots, indirect LEDs)
- Sound insulation (floating floor, resilient band)
What budget to create a mezzanine?
Average price by type of mezzanine
- Mezzanine kit : between 1,000 and 3,000 € according to dimensions and quality.
- Custom Mezzanine (structural) : of 5,000 to 20,000 € depending on materials, access and technical constraints.
Labour costs and work delays
- Skilled labour required for a secure project.
- Time limits: between 1 week for a kit and 2 to 4 weeks for a custom mezzanine.
Elements that may vary the price
- Design staircase (noble wood, metal)
- Verrière, tailor-made railings
- Difficult access or height work
Development ideas for a successful mezzanine
Room in height: privacy and unobstructed view
Creating a room on a mezzanine means freeing up space at the bottom while keeping an intimate cocoon high. Ideal in studios or for a guest room.
Desk or corner reading suspended
A bright high space with a custom library, an armchair and a hanging lamp. Perfect for teleworking or reading quietly.
Mezzanine child or corner games
A well-secure child mezzanine can accommodate a play area, a bed cabin or a reading room. It is a playfully evolving space.
Tips for optimizing natural light and ventilation
- Installing velux or glass windows
- Planned glass openings on the facade
- Use light shades for walls and floors
Use a renovation company for your mezzanine
Benefits of a full-service professional
A competent renovation company will take care of all the steps: diagnosis, plan, Masonry, structure, carpentry, finishes. One contact, one secure project.
Safety, durability and comfort: why not improvise
Poorly laid, a mezzanine can become dangerous (fall, collapse). It is best to entrust this type of work to professionals who are familiar with standards and good practices.
Ten-year guarantee and construction insurance
Working with a serious company also benefits from the 10-year guarantee and insurance in case of malpractice, a real plus in case of resale.
Conclusion: The creation of a mezzanine is a project that requires reflection, know-how and preparation. So well thought and well realized, it transforms a dwelling, optimizes space and brings real added value. For a successful project, it is best to surround a competent renovation company capable of managing all the works in a coherent, secure and aesthetic way.
