Common
The Preconstruction Podcast: Articles and Interviews with Preconstruction leaders throughout the industry.
LeanBuilt: Prolific YouTube channel of Jason Schoeder. Some Construction material too, but plenty of passion and knowledge.
DBIA Bookstore: Design Build Institute of America bookstore - tons of great best practices for Design Build delivery.
Mechanical
SMACNA Bookstore: Resources from the Sheet Metal and Air Conditioning Contractor’s National Association.
MCAA Bookstore: Resources from the Mechanical Contractor’s Association of America
Electrical
Electrical Pre-Construction Planning Process Implementation Manual: Awad S Hanna, PhD, PE, ELECTRI International, 2008
NECA bookstore: Resources from the National Electrical Contractor’s Association
Plumbing
ASPE Bookstore: Resources from the American Society of Plumbing Engineers