2020 BNi Labor & Material Data Cost Guides BNI Electrical Costbook Facilities Manager’s Costbook BNI Construction Costbook Home Builder’s Costbook Mechanical Electrical Costbook Home Remodeler’s Costbook BNI Public Works Costbook BNI Remodeling Costbook Quickly and easily estimate the cost of all types of projects involving new construction and renovations in both commercial and residential buildings….