Bidwinners Is A National Construction Estimating Firm In The Business Of Helping Contractors Win Projects. We Estimate And Takeoff Your Entire Project For You Based On Local Pricing. Most Contractors Are So Busy Running Their Jobsites That They Neglect The Estimating. You’re Supervising Jobs, Making Deliveries, Going To Jobsite Meetings, And The Only Time To Work On Estimating Is Nights And Weekends.​