What about taking him to the house and having him select some things from it to bring back with him, with the understanding that whatever is left at the house will be put up for estate sale?
I am assuming he is private pay at whatever facility you have placed him, or private insurance. I am not sure how it is in California, put in PA they can sell your house and take the money for your expenses if you do not have sufficient funds for your facility stay. So if it is the same out there, double check into whether they will eventually claim his house for payment.
If so, then sell now and get the money out of your FIL's name, so they cannot take it. Eventually most incurances run out and the people are left on medical assiatance or medicare, which the facility gets pretty much all of.
I know it sounds bad, but I work in a long term care facility, and there are some people who's houses and property ahve been sold in order to secure fund for their treatment. and once that money runs out, the facility no longer gets money from them, just the reimbursements from the state for their care.
Definitly worth looking into, because it would really suck if you held on to the house and ended up losing it with nothing in return. Maybe have the house transferred into your husbands name while your FIL is still in his right mind and can still legally sign for it?