download thousands of free detailed design & planning documents including 2d cad drawings, 3d models, bim files, and three-part specifications in one place

technical and professional practice reference for architects. archtoolbox provides the information you need to design beautiful buildings and grow your career.

upcodes is a comprehensive code compliance platform. research, collaborate, and calculate code requirements efficiently, all in one place.

the blue book network is a commercial construction digital directory designed to help contractors, subcontractors and suppliers expose their company, services, and qualifications to buyers.

associated builders and contractors (abc) is a national trade association that advances and defends the principles of the merit shop in the construction industry, representing merit shop contractors, subcontractors, material suppliers and related firms in the united states.