Getting him to propose

Me and my boyfriend have been together for a little while now we have the same goals marriage, house, kids and etc.... Call me old fashioned but I would like to get married find a house and then have kids but he's kindnof dragging his feel he's more focused on buying house and getting into his career... I want to have kids before I hit 30 ( I'm 26 now) he has no problem with marriage so how do I get him to propose???