All homes sold in the City of Los Angeles require retrofit bathrooms with ultra low flow flush toilets. This mean replacing all toilets prior to the close of escrow! You do not have to replace already existing low flow toilets (1.6 gallons is a low flow toilet). If in doubt about an existing toilet meeting requirements you can call The Rebate Center at (310) 523-1065. The city does have a $100.00 rebate program for toilets, or the city will give you a new toilet free of charge provided you exchange the new toilet for the old toilet. There are several distribution toilet centers throughout the city to find the closest distribution center for your area at (310)771-0803. To obtain a Certificate of Compliance call (800) 203-7380.