Green Home Building
Greenhomebuilding.com focuses on sustainable architecture, natural building, solar energy, ecology, water and forest conservation, recycling, greenhouses, adobe, cob, strawbale, cordwood, papercrete, earthbag and vernacular architecture, with related resources of books, videos and links.
http://www.greenhomebuilding.com

Whole Building Design Guide
Web portal for building-related information with a "whole building" focus provided by the National Institute of Building Sciences. Areas include Design Guidance, Project Management, Operations and Maintenance, Mandates and References, and Tools.
http://www.wbdg.org/

Wick Building Systems, Inc
Wick Buildings builds metal buildings, steel buildings, pole barns, storage sheds, machine sheds, farm buildings, horse barns, commercial buildings, municipal buildings and pole buildings.
http://www.wickbuildings.com/

US Green Building Council
Non-profit organization dedicated to sustainable building design and construction. Developers of the LEED building rating system. Listings of regional chapters.
http://www.usgbc.org

Modular Building Consultants
Modular Building Consultants provides mobile, modular, relocatable, temporary and permanent buildings. Modular Building Consultants builds prefab mobile and modular buildings from standard mobile layouts to complex multi-unit building systems.
http://www.modularconsultants.com/

Ireland: Irish Building
Construction Directory for the Irish Construction Industry - Irish Building Industry Directory
http://www.irishbuildingindustry.ie

Specifinder Building Product Manufacturer Directory
Standardised building product information with facilities to browse, download PDFs, and order hardcopy brochures. Published by the Building Centre, London.
http://www.specifinder.com

Green Building Press
The green building eco_building and sustainable construction information specialist. This is the Green Building Press website.
http://www.newbuilder.co.uk

Building Sciences
Building Envelope Consultants - experts in building envelope design, construction and testing.
http://www.building-sciences.co.uk/

Hemp Building
Hemp plaster, Consultancy on Hemp construction; available from Steve Allin
http://www.hempbuilding.com/