Installing a
greenhouse in your garden
brings many advantages.
Indeed, it protects your plants from pests and diseases such as mildew.
It also offers protection against frost and the vagaries of the weather, which allows you to enjoy your crops all year round.
To discover
Garden: what to plant, sow or harvest in November?
November: what are the seasonal vegetables and fruits?
To install a greenhouse in your garden, certain
regulations
must be known.
Explanations.
Is the installation of a garden greenhouse subject to regulations?
Yes.
A garden greenhouse may be considered by law as an external annex and therefore be subject to
planning permission
.
This mainly depends on the surface of it but also on the residential area and the Local Urban Plan (PLU).
Read alsoFence and neighborhood: what does the law say?
Is it possible to install a greenhouse without planning permission?
Yes.
The
small areas
are exempted from authorization application (except for protected areas).
You can therefore install a garden greenhouse without formality if its height does not exceed 1.80 meters and the area does not exceed 5 m².
In addition, if the
construction is temporary
, that is to say that it is established for a maximum of 3 months in the year, no authorization is necessary, regardless of its surface.
In which case should you apply for an urban planning authorization for a greenhouse?
If your garden greenhouse exceeds 1.80 meters in height and 5 m² in area (floor area and footprint), it is, like a swimming pool or a garage, considered as a
new construction
(articles R421- 9 to R421-12 of the Town planning code).
You must then apply for an
urban planning authorization
for the construction of this one.
To obtain it, you must submit an application for a building permit or a prior declaration of work (DP) to the town hall.
The form is available online on the public service website.
Unprotected area:
If your garden greenhouse is between 6 m² and 20 m² in area and the height is less than or equal to 1.80 meter, you will need to make a
DP
(prior declaration of work) to the town hall of your place of residence.
If your garden greenhouse is more than 20 m² in area and the height is over 1.80 meters, you will need to
apply for
(and obtain) a
building permit
before installing your greenhouse.
Protected area:
If your place of residence is located in a
"protected zone
", that is to say on the edge of a heritage site or a historic monument, or on a classified site or in the process of classification:
You must request a
RFP
if your surface area is less than 20 m² and the height above the ground is less than 4 meters (article R421-11 of the Town planning code).
You must apply for a building
permit
if your area is greater than 20 m² and the height is over 4 meters.
Read alsoHedge: size, maintenance, regulations
What are the rules to follow before building a greenhouse?
The rules differ according to the territory concerned, because each municipality establishes its own regulations through the
Local Urban Plan
.
Depending on the PLU of your municipality, your greenhouse must meet the construction rules mentioned therein (authorized and unauthorized materials, property
limits, surface and height limits
, general architectural aspect, etc.)
This is why we advise you to get
closer to your town hall in
order to know the municipal requirements.
