Big Block Realty is a real estate brokerage headquartered in San Diego, California. Founded in 2010 by Sam Khorramian and Oliver Graf, the company emphasizes an agent-centric model, providing tools and resources to support real estate professionals. Big Block Realty operates primarily in California and has been recognized for rapid growth, earning a place on the Inc. 5000 list of fastest-growing private companies multiple times. In 2024, the firm joined forces with LPT Realty, aligning with a cloud-based brokerage model to expand its reach and technology offerings. The company remains privately held and continues to focus on residential and commercial real estate transactions.