To make preparing budgets easier, OSP offers a Budget Preparation Template with formulas already written into the spreadsheet. Download free construction proposal template to create, customize, and send construction proposal for signatures from anywhere.A budget proposal summarizes the estimated costs for an upcoming project in order to secure funding from project stakeholders. Use pre-built budget templates along with a pre-uploaded Deckorators catalog to deliver accurate, professional estimates in a fraction of the time. To make preparing budgets easier, OSP offers a Budget Preparation Template with formulas already included in the spreadsheet.