Below are links to information regarding ADU's from differing perspectives
California Department of Housing and Community Development Where Foundations Begin Accessory Dwelling Unit Memorandum December 2016
Los Angeles #1 Garage Conversion Company
Your local garage conversion and garage remodeling company. We serve all of the greater Los Angeles areas. Convert your garage into a beautiful room today!!!
General Information from Builder magazine, a major source of Building news
City of LA http://planning.lacounty.gov/adu/ordinance