Duncan Family Office

Duncan Family Office

The office was founded in 1968 by Dan L. Duncan. His creation of Enterprise Products Partners supplied the core wealth that the family office now stewards. Randa Duncan Williams serves as the primary operator alongside siblings Milane Duncan Frantz, Dannine Duncan Avara, and Scott Duncan. Capital is deployed through direct co-investments and SPVs in private equity, natural resources, and real estate. Holdings include Enterprise Plaza in Houston and Double D Ranch in San Angelo, Texas. The geographic focus remains North America. Sector exposure centers on ClimateTech and Energy Transition & Renewables alongside the legacy midstream position. The team size is not publicly stated. The office maintains membership in the Private Investor Coalition and Family Office Exchange. It also supports the Dan L. Duncan Family Foundation for separate philanthropic activity. No operational changes were recorded in the last 24 months. The family office retains an operating-company relationship with Enterprise Products Partners. This link supplies proprietary access to energy assets that external allocators cannot replicate.