More than 80,000 verandas are installed each year in France.

Winter garden, summer kitchen, sunny bedroom or living room, this extension saves space while enjoying a panoramic view and extra light.

Have you decided to take the leap?

In order not to regret your investment, it is a question of asking the right questions.

What are the necessary steps?

In the majority of cases, you will not cut the preliminary declaration of work and the documentation file for your project that accompanies it.

This procedure is required for any extension of your house of more than 5 m2 of footprint or floor area and up to 20 m2.

And beware of respecting the prescriptions of the local urban plan (PLU) or the land use plan (POS), otherwise your project will be rejected.

For those who have delusions of grandeur, it will be necessary to apply for a building permit beyond this threshold.

It is only in the urban areas of municipalities covered by a PLU or a POS that the prior declaration of work is sufficient up to 40 m2.

And again, it is only on condition that the total surface of the house, veranda included, does not exceed 150 m2, otherwise a permit will be required from 20 m2 of extension.

In co-ownership, you will also have to obtain the agreement of the co-owners at a general meeting.

Is the use of a professional mandatory?

If it is advisable to call on a specialist to install your veranda in the best conditions and ensure that it is properly insulated and sealed, the question of the intervention of an architect may also arise.

Indeed, the legislation requires you to use this professional for any expansion project that brings the existing construction to more than 150 m2 of total floor area or footprint.

It is therefore enough that your residence is already imposing so that the addition of a veranda, however small, requires going through an architect.

Despite an additional cost, it is also a guarantee of quality and the guarantee of designing a tailor-made project.

What function to give to this extension?

It is imperative to clearly define the use you want to make of your future veranda.

And for good reason, if this extension is destined to be an integral part of the living rooms of the house, it must be designed as such, with an adequate structure and insulation.

Conversely, a so-called cold veranda, in other words which can only be used in good weather, is less complex and expensive to make.

The function of this enlargement is therefore decisive in choosing the mode of design, the necessary surface, the orientation or the materials.

What type of structure to choose?

Recessed, semi-recessed installation or resting on a corner of the house… everything is possible, knowing that the sides and facets can take many forms.

The vast majority of installations are made of aluminium, a popular material for the thinness of the profiles and the variety of colors available.

That said, there are versions in steel, more resistant but afraid of too much humidity, and others in wood (to be treated regularly).

On the roof side, you still have the choice between 100% glazing for maximum light but also high heat if the windows are not efficient enough, or a semi-opaque or opaque roof for better insulation.

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How much does a conservatory cost?

Everything obviously depends on the choice of materials, the surface and the complexity of your project.

Nevertheless, it is estimated that it is necessary to count between 1,300 and 2,500 euros per square meter, installation not included.

In addition, be aware that you will have to declare this extension of your home to your property tax center within 90 days after the completion of the work, so that they can modify your property tax accordingly.

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