How can I get a new birth certificate lost the old one

Go to the Los Angeles County Registrar Office and request a form to replace your birth certificate. To request copies in-person, bring: Valid photo ID Fees: $28 per copy

Call the city hall and ask them.

Call the city's phone number 311 and ask to be transferred to city hall to ask them about the recovery of this paper. Or it might also help if you google the national archives website. You can also go to city hall in person and ask them where the registrar for these types of documents is located. Good luck!