They can give you rough quotation only during their on site measurement, according to your need, they roughly quote you how much is it, not too detail. As the designing and planning haven't start, they do not know how many sqf of cabinet, how many wiring point, lightning point etc. Asking them for detailed quotation is like asking them to brainstorming the full complete design of your house which I think most of the contractor will not entertain you. Instead of asking them for itemized quotation why not you ask them unit price like, plaster ceiling 1 feet how much, lightning point 1 point how much, install heater 1 unit how much, which I think they can easily answer u.