Brenda Casillas was born in Baja but spent her life between La paz & Guadalajara where she attended architectural school after finishing her degree in architecture. In 1997 She decided to move back to Baja where she worked at one of the most prestigious architectural firms in Cabo san lucas. Looking for a better quality of life, she moved to Todos Santos in 2000, where she started her own architectural firm.

Brenda is an active board member in a couple of non-profit associations that create educational and health programs for children in the area. She is also the president of "Las Tunas neighbor association" that has been working on different infrastructure projects just north of Todos Santos.