The city of San Francisco, state of California, and federal government have enacted a variety of ordinances with regards to energy efficiency and water conservation, many of which require proof of compliance during the sales process (compliance at the point of sale).
The energy saving and water conservation disclosures you will receive are a mix of both *general disclosures* that explain the basic rules in San Francisco, as well as *property specific* documentation showing evidence of additional work or compliance at the property that you may not receive until after your escrow has begun.
Energy and Water disclosure documents take a variety of formats, but generally explain what the various laws are and who they apply to.
In general, if the property is an owner-occupied single family home or condo and is being sold by the owner (who is alive), then the property will need to comply with the point of sale conservation ordinances.
San Francisco also requires inspection by a licensed inspector for compliance with the energy and water ordinances, and issues a recorded document that provides proof of compliance with the city mandated energy and water conservation ordinances.
San Francisco wants you to save energy!