You ask about the intestacy laws (which apply if one of you dies without leaving a will), so here goes:
Let's deal with the house first (if relevant):
If you and your husband own a property as 'joint tenants' then wills and the intestacy laws are irrelevant anyway. When one of you dies, the other one will acquire full ownership of the property automatically. (Anything written in a will, giving their share of the house to anyone else, would be invalid since neither person actually owns a 'share'; its the partnership which owns the whole house).
However if you own a property as 'tenants in common', then the intestacy laws apply and the deceased person's share of the house will form part of their estate, which is distributed in accordance with the rules illustrated in this flow chart:
http://www.tollers.co.uk/system/docs/178/original/Rules%20of%20Intestacy%20Flowchart.pdf
Chris