Sustainability certificates for residential buildings (LENOZ certificates) must be issued by:
an architect;
a consulting engineer;
an energy consultant;
a professional approved to perform technical tasks for the purpose of energy-related studies or inspections, and more particularly for the purpose of:
carrying out energy audits;
determining the energy performance of buildings and issuing energy performance certificates.
The certification covers 6 assessment categories.
Persons authorised to issue sustainability certificates are encouraged to undergo specific training organised by the Ministry of Housing (Ministère du Logement).
The Ministry of Housing publishes a list of all professionals who have received such training on its website.
However, the software may be downloaded by anyone. The building materials data currently used in the LUX-Eeb Tool H+ software can be consulted in the document entitled, "Materialdaten LENOZ 2016" (in the table on environmental impact of building materials).
Who to contact
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Ministry of Housing
4, Place de l'Europe L-1499Luxembourg Luxembourg
Postal address : B.P. L-2916
Reception: Reception: Thursdays by appointment only; every other weekday from 8.00 to 12.00 and 13.30 to 16.00 (no appointment necessary) / Telephone: Mon.-Fri. from 8.00 to 16.00