David Costello has a diverse work experience in the fields of real estate, insurance, and risk management. David started their career as the President of NorthSar Risk Management & Insurance Services, Inc. in 1998 and held this position until 2010. In 2015, they joined Sotheby's International Realty as a Realtor and worked there until 2016. David then joined Golden Gate Sotheby's International Realty as a Global Real Estate Advisor and Sales Agent from 2016 to 2020. In 2018, David worked as a Weekly Contributing Writer for the San Francisco Examiner Real Estate Section. In 2020, they held a role as an Insurance Broker VP Family Office/HNW Personal Lines at Heffernan Insurance Brokers. Currently, they are working at Compass as a Real Estate Sales professional.
David Costello attended St. Ignatius College Prep in San Francisco, CA from 1970 to 1974, where they completed their high school education. David then pursued higher studies at Pepperdine University from 1974 to 1978 and obtained a Bachelor of Arts degree, majoring in Psychology and Business.
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