Is it permissible to give one's parents a portion of the Zakat money to build a new house foundation for them, as they are in dire need of it, and is it necessary to inform the husband of this, given that he does not inquire about the distribution method?

If the parents' old dwelling is unfit for habitation, and they are unable to repair it or rent another, it is permissible to give them from Zakat to complete the construction of a new dwelling. It is not necessary to inform the husband of this, unless he has specified the recipients of Zakat.