These national organizations provide great resources, data, studies and a wide variety of information.

Habitat for Humanity International - Advocacy Toolkit

Habitat for Humanity International - Build Louder Website

National Low Income Housing Coalition
Dedicated to ending America’s affordable housing crisis.  

KnowledgePlex
Affordable housing resource for professionals.

U.S. Department of Housing and Urban Development (HUD)
Oversees housing policy on national level.

National Association of Housing and Redevelopment Officials
Community development advocate for affordable housing.