BuilderWeb
   Worldwide directory of housing industry product and service providers. Includes a forum.
   http://www.builderweb.com/

Habitat Directory
   International search for construction industry manufacturers, associations and suppliers.
   http://www.habitatsearch.com

International Design and Construction Online
   Source of information and e-commerce for the construction and design industries worldwide.
   http://www.e-idc.com

International Directory of Construction Law
   Directory devoted to lawyers in the construction industry.
   http://www.constructionlawdirectory.com/

Log World.com
   Log home builders worldwide directory of manufacturers, suppliers, log home maintenance and information for log home owners.
   http://www.log-world.com

MasterPlumbers
   Portal for plumbing news and business and service listings worldwide.
   http://www.masterplumbers.com/

Spec-Net Building Index
   Construction, engineering, and interior design industry portal.
   http://www.buildingindex.com

The Concrete Connection
   Worldwide directory of concrete product and service providers. Includes a forum.
   http://www.concreteconnection.com

Virtual Architect
   Portal for the construction industry, which lists links to product and software suppliers, consultants and technical information.
   http://www.virtual-architect.net/

Window Cleaning Center
   A worldwide directory of window cleaning companies.
   http://www.window-cleaning-center.com