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This 46,229-SF facility for the County of San Diego’s Health and Human Services agency includes a two-story structure, which houses administration, community health, public health, Mariposa Clubhouse and shared-use spaces to the north, and a three-story structure with support spaces and several agencies to the south, including Aging & Independence and Military & Veteran Services. Miyamoto’s structural design utilizes highly durable tilt-up concrete walls with structural steel framing elements. Both structures share a two-story lobby, which also provides a connection to the outdoor spaces while providing a clear civic identity and wayfinding for the main entry point. Innovative planning strategies provide for the maximum flow of natural light and fresh air into the staff spaces. The facility, which has already achieved LEED Platinum Certification, is the only ZNE project listed in California that is a County-owned medical office.


  • 2021 San Diego Green Building Council Sustainability Awards
  • 2019 Buildings New Construction Less than $25 Million Award, Cmaa San Diego Chapter
  • 2019 Regional Award Dbia Western Pacific Region
  • 2019 Lean in Design-Build Excellence Award DBIA Western Pacific Region
  • 2019 Excellence in Sustainability Award, AGC Build San Diego
  • 2019 Savings by Design: Energy and Integration Award, AIA San Diego Design


LEED Platinum, Net Zero Energy

Oceanside, CA
Balfour Beatly + HMC Architects
County of San Diego
$21 Million
46229 SF

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