Domestic clients do not normally have client duties under the CDM Regulations. There is no requirement to appoint a CDM co-ordinator or principal contractor. Domestic clients will only have duties under Part 4 of the Regulations if they control the way in which construction work is carried out (eg by insisting on use of an unsafe means of access). Duties under Part 4 apply irrespective of employment status or whether you do construction work, but kick in if there is significant control over the way the work is done. The extent of the duty is in proportion to the degree of control you have over the work in question.