Hello my name is ***** ***** I will help you with this.
Whilst this is not ideal, you can.
What do you don't want to do is stop him working. That is not fair on him and his family
Whilst I appreciate that you have a dispute you don't want to make it so the builder can no longer work
So yes you can hold onto them if you wish
But you need to ask is it the right thing to do
Can I clarify anything for you about this today please?
what is the legal right under which I can hold hold on to them?
You are holding them under Bailment.