It is also required to disclose natural hazards as part of California Civil Code 1103. There are several third party companies that prepare these reports in the state, but the best ones with also include local disclosures. The report is typically paid for by the seller through escrow and ordered at listing so the buyer has a period of time to read over the report. These reports should also include airport influence areas, military ordnance sites, Megan's Law, and other supplemental disclosures. Environmental hazards such as leaking underground fuel tanks and Mello-Roos tax and 1915 Bond Act taxes should also be included, especially in San Francisco where most properties have a Mello-Rood school tax. I have been working in the NHD field for over 15 years so if you have any questions, please don't hesitate to contact me.