The Indagators, a social group of the best home inspectors on the planet, with sidelines ranging from viticulture to publishing humor columns to rocket science.   The information stored in these brains is pretty hard to match.  We have an online discussion group that provides members with the (correct) answer to most any possible building related question in minutes.  An invaluable resource for those in the loop.  Also a good site to find an inspector elsewhere in the country.

Building Performance Contractor's Association, a group of contractors and other professional who understand and implement solutions to building performance issues.  These include comfort issues (hot/cold spots, dry or humid air, etc.), energy conservation, excessive fuel bills, health & indoor air quality, etc.  They also have more links to interesting energy sites.  This site serves the NY area, but they have members in other states as well.

The Energy Efficient Builder's Association, an organization dedicated to improving the performance and quality of building in America.   They provide education, research, public outreach, and contractor referrals.

Advanced Energy, an engineering group that is doing some of the best research on closed crawlspaces, insulation and air sealing, and other really important issues.

Building Science, another engineering company, lead by the guru of energy efficient and healthy houses (and my own personal building physics hero), Joe Lstiburek

The inspectors below are all members of the Indagators, a loose collection of the best home inspectors on the planet. Together, the Indagators know everything that anyone can know about houses. If you need an expert inspector or consultant anywhere in the country, these are the people to contact.

AL, Huntsville

Bill Loden - http://www.insight-inspection.net

CA, San Francisco Bay Area

Lawrence Hoytt - http://www.hoyttinspect.com

Mike Sterling - http://www.sissco.com

CO, Denver Area

Garet Denise - http://www.Cornerstone-Inspection.com

FL, Tampa Bay Area

Mark Cramer http://www.Best-Tampa-Inspector.com

FL, North Central (Tallahassee)

Larry Cerro - http://www.homeinspect.com

IL, Chicago Area

Kurt Mitenbuler - http://www.chicagohomeprimer.com

MI - Metropolitan Detroit Area

Rick Bowling - http://www.inspect1.com

MI - Ann Arbor Area

Michael Hoberecht - http://www.inspectormike.com

NJ, Northern

Ken Salvo - http://www.ridgehomeinspection.com

NJ, Central

Pete Engle - http://www.Almosthome.com

TN, Nashville

Walter Jowers - http://www.housesenseinc.com

UT, Northern

Michael Leavitt - http://www.TheHomeInspector.com

VA, Central - Charlottesville Area

Peter Drenan - http://www.VAHomePro.com

Eastern Ontario - Canada

Brian Callaghan http://www.travel-net.com/~alert

Southern Ontario - Canada

Bill Mullen - http://www.bluewaterhomeinspection.com

The following inspectors are not Indagators, but they are still outstanding inspectors, and the best in their areas.  

New York

Dan Friedman - www.inspect-ny.com - Dan has been in the business forever and publishes really good information about buildings. He is one of the experts on fiberglass roof shingle failures. Dan also knows his stuff on home IAQ issues. His website is a really good resource for all building issues.