An administrative act is a legal act subject to administrative law, the litigation of which is the responsibility of the administrative judge. Mayors and presidents of local authorities may use real estate acquisitions in a development or road project, either in administrative form or by notarial deed.

The purpose of urban planning documents is to specify the rules affecting the allocation and occupation of land (mostly for buildings).

To improve one’s income or retirement, life annuity makes it possible to sell one’s property (house, apartment or other) in exchange for a payment in the form of a life annuity by the buyer.

Expropriation and pre-emption are complex procedures. When the owner's payment raises obstacles, it may be necessary to use the deposit system for the price of the expropriated or pre-empted property.

The building permit makes it possible to undertake any new construction (such as a house) but extension works for an area greater than 20 sqm or work for historical monuments.

Demarcation is about definitively fixing the limit of two adjacent sites and marking these limits through marker materials known as “bounds”. Demarcating a land is not compulsory (with exceptions). However, it is highly recommended.

Decommissioning ceases the use of government-owned property, local communities and public institutions or other public entities. Decommissioning brings the good out of the public domain.

The seller of real estate for residential and/or professional use, who undertakes to carry out work within a specified period and receives sums from the purchaser before the completion.