If couples in community type of marriage, during division of assets, do the assets acquired before marriage are also involved?

It's not clear what you mean by "community type of marriage" since in New York there's only one form of marriage: being married. Assets acquired prior to the marriage are separate unless they are commingled or otherwise, through some action, become marital property in part or in full. How that would apply in your case is something you should discuss with a local attorney,.