Redwood Kardon is a former building inspector for Oakland, CA., and is the leading professional lecturer nationwide on building codes. He also owns and maintains "codecheck.com," a website devoted to promoting the Code Check manual. Coauthors Douglas Hansen and Michael Casey have 25 and 18 years of field experience, respectively. All three authors teach seminars for inspectors around the country, using the "Code Check" series as their primary material. Paddy Morrissey was the senior illustrator for CornerHardware.com and has been the sole illustrator for the "Code Check" series.
Douglas Hansen lives in Palo Alto, CA.
Paddy Morrissey was senior illustrator for CornerHardware.com. All three live in the San Francisco Bay area.