I would file something with http://www.dre.ca.gov/cons_complaint.html
Contact the LA state real estate licensing board and file a compliant....telling them the agent's action. They will give you recourse up to a certain amount of money....you need to do it within 2 years of knowledge....good luck.
Get all your documents together, disclosures, inspections, sale contract and consult a local attorney. You may be able to go after the owner and I would also file a complaint with the CA real estate board against the realtor.
LoopNet Answers is where the commercial real estate community shares what they know to help each other out. And it's all for free.
Ask a question to get advice from brokers, investors, professionals and local experts.
Answer questions to raise your visibility as a trusted advisor and build new relationships.