About Me

Coming from a family of medical doctors, young Rene aspired to be a doctor himself. His grandfather, Dr. Toribio Joson is credited for starting the National Mental Hospital and the Orthopedic Hospital.  His father, Dr. German B. Castillo is credited for starting the laboratories of Medical City and Makati Medical Center. 

Rene is a true GREEN blooded La Sallite walking to La Salle Green Hills for 11 years from his Duke St. East Greenhills residence. He went to Oklahoma City University and after completing his BS degree in General Science, he went to UERRMC medical school. But Rene’s life course changed when his uncle, broker, appraiser, and consultant Atty. Venerando B. Joson introduced him to the real estate industry in 1988. Since then, Rene did not look back at his medical books. His  real estate practice eventually led him to luminaries such as Ayala’s Dona Bea Zobel, Madrigal siblings Atty. Juan Miguel Madrigal Vasquez, Victoria Madrigal Vasquez, Quadrillion’s Elsie Chua, Richard Lao’s Antel and Megaworld Andrew Tan to name a few.

He sees the importance of having a good mentor early in one’s real estate career. Rene is open to be one. That is great to know from the current President of  City of Taguig Real Estate Board Inc and Principal Broker of the Joson Castillo Realty.

Rene and Arleen met over PAREB and eventually joined hands to start Iloilo Prime Properties. Rene believes that Iloilo is a city to watch, and there’s still a lot of potential in the real estate market.

Memberships & Associations

• Vice-President NCR – Philippine Association of Real Estate Boards (2019)
• President – City of Taguig Real Estate Board (2012 – 2013)