Escrow companies and the Los Angeles Department of Water and Power (DWP) require home sellers to meet certain compliance issues. This includes the proper strapping of water heaters, making certain smoke alarms are present in the bedrooms and the hallways between them and the installation of low flush toilets and seismic gas shutoff valves. Once everything has been found to be in compliance, Eli Baer Plumbing and Drain will issue a certificate to that effect.