With many of us in this position, in which we provide a product and service to a customer at their premises, and have problems in getting paid.

I noted that in the USA they have a legal recourse called "mechanic's lien"
From Wikipedea
A mechanic's lien is a security interest in the title to property for the benefit of those who have supplied labor or materials that improve the property. The lien exists for both real property and personal property.

Do we have such a clause or something similar in South African law?