Housing characteristics survey

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The Housing characteristics survey (ECM) is organised by the National Institute of Statistics and Economic Studies (STATEC).

STATEC is a state administration under the authority of the Ministry of Economy, which enjoys scientific and professional independence. Its mission is to collect, analyse and disseminate data on Luxembourg's economy and society in a neutral manner.

The objective of the Housing characteristics survey is to gather information about the characteristics of houses recently acquired by households in order to determine how these characteristics impact on the purchase price as indicated in the notary deed. This information aims at producing a constant quality House Price Index.

The House Price Index, which is published on a quarterly basis, is disseminated via the short term indicator C.

Who is concerned?

Four times a year, a questionnaire is sent to the persons having recently acquired a house. The selected persons are required to take part in the survey.


In order to respond to the Housing characteristics survey, the selected person must first have received an invitation by post.


The questionnaire for the survey must be filled in by the deadline specified in the invitation letter.

How to proceed

Responding to the questionnaire

The STATEC invitation letter contains:

  • an access code that is required to open the online questionnaire via MyGuichet.lu; and
  • a hardcopy (paper) version of the questionnaire, along with a return envelope, should the respondent prefer to reply by post.

Respondents should only fill in one questionnaire (either the online version via MyGuichet.lu, or the hardcopy (paper) version).

If you experience any problems with the questionnaire, please contact STATEC.

Specific information about the online questionnaire on MyGuichet.lu

The questionnaire is available in Luxembourgish, French, German and English. The choice of language is made directly in the 'Online services and forms' section. Just click on one of the 'LB', 'FR', 'DE' or 'EN' tabs to start the questionnaire in your preferred language.

For those who wish to respond to the questionnaire online, 2 options are available:

  • using the authenticated mode of MyGuichet.lu by means of an identification with a LuxTrust product. This is the preferred mode of response, as it allows you to stop entering responses to the questionnaire at any time and resume later. Additionally, answers that have already been entered are saved; or
  • without using the authenticated mode of MyGuichet.lu. Please note: in this case, the input of the answers to the questionnaire must be done without interruption, because answers already entered are not saved.

Obligations and sanctions

Taking the survey is mandatory.

Failure to respond or willingly providing false information may lead to financial sanctions. The purpose of this legal requirement is to enhance the quality of the statistics produced, by ensuring that STATEC can collect reliable and sufficiently representative data on the resident population.

Statistical confidentiality

The answers provided are covered by the statistical confidentiality guaranteed by law.

In case of disagreement regarding the protection of personal data

In the event of disagreement regarding the protection of your personal data, you may contact STATEC's Data Protection Officer (DPO):

  • by post: DPO, STATEC, B.P. 304 L-2013 Luxembourg;
  • by phone: 247-88 492;
  • by email: dpo@statec.etat.lu.

In accordance with the General Data Protection Regulation, survey respondents have the following rights:

  • the right to access their data;
  • the right to have their data rectified or erased;
  • the right to restrict processing, or to object to processing, of their personal data;
  • the right to data portability.

They may also lodge a complaint with the National Commission for Data Protection (Commission nationale pour la protection des données - CNPD):

  • by post: CNPD, 15, boulevard du Jazz L-4370 Belvaux;
  • by phone: (+352) 26 10 601.

Online services and forms

Who to contact


  • National Institute for Statistics and Economic Studies (STATEC)

    13, rue Erasme L-1468 Luxembourg Luxembourg
    B.P. 304
    Closed ⋅ Opens at 8.30
    8.30 to 11.30, 13.30 to 16.30
    8.30 to 11.30, 13.30 to 16.30
    8.30 to 11.30, 13.30 to 16.30
    8.30 to 11.30, 13.30 to 16.30
    8.30 to 11.30, 13.30 to 16.30

Related procedures and links


Legal references

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