Get your Construction Estimating Using Excel here today at the official Nassau Community College Bookstore. Look around for more while you're here.In the video I will teach you how to use Excel to build a worksheet for estimating projects for the small contractor. Continuing Education courses are all non-credit. That means no grades or transcripts. After you fill out your application online, you will need to print, sign, and send this Authorization Page to complete the process. Download a free construction estimate template in Google Sheets, Excel, or PDF format, to provide a clear cost breakdown to your client.