The Rent Reference Index is used to review rents. It was created by Article 35 of Act 2005-841 of 26 July 2005 (IRL Act 2005) on various measures to promote social cohesion and amended by Article 9 of Act No. 2008-111 of 8 February 2008 for purchasing power.

The rent reference index came into force on January 1, 2006.

Article 35 of law n° 2005-841 of July 6, 2005 relating to the development of personal services and introducing a range of measures in favour of social cohesion, stated that the rent reference index replaced the related mobile mean on four quarters of the cost-of-construction index as the reference for the revision of rents for ongoing leases in private rental housing stock.

Rent reference index decree n° 2005-1615 of December 22, 2005 established the terms and conditions for its calculation and publication. Article 163 of the finance law for 2006 set its effective date as January 1, 2006.

The IRL was calculated with this definition until the 3rd quarter of 2007. Law n° 2008-111 of February 8, 2008 changed the definition of the rent reference index to be taken into account for the revision of residential rents.

Rent Reference Index

Computation of rent reference indices