The purpose of this contract is to carry out a survey of 200,000 households living in a detached house or a collective dwelling (including social housing), from 50,000 to 65,000 landlords of rented housing, as well as a supplementary survey of trustees representing 10,000 condominiums and social landlords representing 10,000 buildings in the social stock in mono-ownerships. The survey should collect information on renovation work undertaken or planned as well as household and housing characteristics over the period September 2020-August 2023. The Survey will be conducted primarily online

Programming and online publication of electronic questionnaires in accordance with the instructions of the Sdes.Test of the questionnaires and the protocol of the survey with 2,000 occupying households (1,000 in individual houses, 1,000 in apartments), 650 landlords, and about 200 trustees or social landlords. Sending of notification letters, collection of responses, follow-up of non-respondents (according to a strategy proposed by the provider, distinguishing between households and businesses) and delivery of the raw results file. Technical support on survey coordination and questionnaire development. In particular, the provider will make proposals on the wording and relevance of the questions, taking care to keep the questionnaire to be a reasonable length, as well as on the integration of non-blocking controls in the questionnaire.