What is a ground plan? What is it used for ? Where to ask?


The master plan is one of the plans that must be provided in the context of an application for a building permit, a prior declaration of work or a connection to public networks. It is about a very precise plan which represents the whole of the plot in its environment as well as all the constructions and the elements already present and / or envisaged. All dimensions must be indicated and carefully represented to scale. Let’s take stock of the characteristics of the ground plane and its usefulness.

What is a ground plan?

The ground plan is a plan which represents an overview of a property in the context of its neighborhood, as well as the various constructions which inhabit it and which are envisaged there. Under article R 431-9 of the Town Planning Code, this document, which is very precise in terms of dimensions and representations, is one of the documents required in the context of a building permit filing for a new house, for a renovation or for any exterior addition (terrace, fence, garden shed, swimming pool, etc.).

The ground plan is codified PCMI 2 in the administrative framework. It must show precisely the boundaries of the plot and all the constructions which appear or which are envisaged therein, to scale and with precise dimensions in length, width and height.

What is in the ground plan

For a site plan to be valid, it must be complete and include the elements listed in article R 431-9 of the Town planning code and in Cerfa notice n ° 51343 05.

On any ground plan must appear:

  • The orientation of the plan and the altitude of the plot (with any embankments and differences in level)
  • The boundaries of the plot and the precise dimension on each side
  • The footprint of constructions already present on the site, with their dimensions (width, length and height)
  • The footprint of the desired constructions on the plot, with their dimensions, and the footprint of the surfaces to be excavated for the establishment of these new constructions
  • The distances that separate new constructions from any existing construction and from the boundaries of the plot
  • The trees present on the plot, those to remove, those to move and those to plant
  • The boundaries of the plot and the elements that delimit them: fences, gates, gates, etc.
  • Access areas, parking areas and traffic lanes provided on the plot and outside
  • Connections to public networks (water, electricity, telephone / internet, gas, rainwater, sanitation, etc.).

What is the use of a ground plan?

The ground plan is a document required as part of a construction or renovation project on land. It must imperatively be appended to any official request for a building permit, prior declaration of work or even request for connection to public networks. This is not just another document to provide, but a plan essential to your project which allows the town planning department of your municipality to verify that what you are considering complies with the regulations in force and respects distances imposed from the neighborhood and the public space.

For these checks, it is essential that the ground plane be rigorously drawn and that the dimensions to be represented on it are strictly observed.

Where to request a master plan?

In the context of the construction of a new house, the ground plan appears among the documents provided by the builder of the home or by its architect. For a project subsequent to the construction, in particular as part of a plot development or renovation, you can obtain the ground plan of your plot through the cadastral administration of your municipality, by internet or by going there.

The owner of the plot can also write his own floor plan. However, it must imperatively respect the instructions, standards and dimensions for it to be valid.

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