In base 2010, the IPEA indices concerned only dwellings, whereas they are now relative to  both residential and non-residential buildings in base 2015. As a result, the IPEA Global index also changes its perimeter.

The "all works" IPEA index differs from the index BT50  "Renovation-maintenance all state bodies" that in so far as the latter reflects the changes in costs incurred by companies in a similar field.