Skype: Changing contacts display pictures

I have used Soocial to sync Outlook and Google Mail Contacts with good results. Since your phone syncs to your Outlook/Exchange contacts, it gets updated as well.

Most contact tools handle Companies in the way that you are asking, i.e. Companies have shared details and users can be attached to companies. This usually works in CRMs, thus you could achieve what you want by defining each household as a company "Home Does", and in the contact details attach the company to them. You can then search for a company and find all relevant contacts for that group.

However, most contact databases on phones are flat databases and don't allow relationships/hierarchy. Usually you have to use links (such as a company field or a spouse field) to open another contact containing the shared details. Hope this helps.