Sorry, but, yet another unfamiliar marriage-related question...
One of my distant cousin's daughter is engaged. Her mother told me that in lieu of sending gifts towards a bridal registry, she has asked people to donate to a "Binyan Bayis Fund." I'm familiar with a "hachnosat kallah" fund, but, generally, the ones that I know are public funds where the collected donations are allocated to brides in some way.
I'm assuming that this "Binyan Bayis fund" may be similar, but, I gather that this is a private fund specifically for this bride. This is the first time that I am hearing this term.
Is someone familiar with what this is? Is this a minhag in certain communities? Is one expected to donate physical gifts or only money? Is there any suggested / average amount that people donate?