Use tax assessed on a sales order

Is there any way to charge use tax on a sales order? The client is a flooring subcontractor so what they install becomes part of 'real' property. Therefore, they can't charge sales tax, but rather must accrue use tax at the time of the sale using the tax jurisidiction of where the goods were delivered. I can't use an accrual advanced pricing rule since they are also using landed cost and weighted average costing. Therefore, the weighted average cost includes the additional landed cost for freight. The tax needs to be assessed on the material costs exclusive of any landed cost add ons.