El Corazon is a City of Oceanside-owned parcel of 465 contiguous acres located in the center of Oceanside. The property is a former mining site that was gifted to the city in 1994. In 2011, Sudberry Properties was selected as the lead developer of the commercial portion and is currently in the process of building a $40 million, 171,291 square foot arena in partnership with the San Diego Sockers. Frontwave Arena is schedule to open in late 2023, with seating for about 5,500. El Corazon also includes Luma, a 268-unit luxury apartment community currently under construction and expected to open in late 2023.

El Corazon also includes a 475,000-square-foot industrial complex to include a 217,000-square foot chemistry and manufacturing facility for Ionis Pharmaceuticals, and about 40,000-square feet of commercial and restaurant space.