NYC Department of Buildings - http://www.nyc.gov/html/dob/

EBuild Construction Resources - http://www.ebuild.com/

First Source - http://www.firstsourceonl.com/

Lower Manhattan Development - http://www.renewnyc.org/

NYC Department of City Planning - http://www.nyc.gov/html/dcp/

Energy Wise Home - http://www.ewhh.com/

Healthy Home Institute - http://www.hhinst.com/