HGA has assisted NGOs, multi-lateral banks, and corporations in the design of numerous conservation projects. Some examples include:

• A large-scale program to establish and manage new protected areas on the eastern slope of the Peruvian Andes with the Blue Moon Fund
• Conservation International's conservation incentive program for the Galapagos Marine Reserve
• Assessing the potential for the tourism industry to absorb labor in the Galapagos Islands for the Inter-American Development Bank
• Inter-American Development Bank's Sustainable Development Program for the Productive Sectors of the Galapagos
• Compañía Minera Antamina´s Polylepis Restoration program in the Andean highlands of Ancash, Peru
• Establishment of Amazon Conservation Association´s Los Amigos Conservation Concession in Madre de Dios, Peru
• Establishment of Peru´s Cordillera Azul National Park
• Conservation International´s Lower Essequibo Conservation Concession
• Technical assistance in the development of an international financing mechanism for sea turtle conservation in the Western Pacific
• Technical assistance in the development of a trust fund to support the Cayos Cochinos reef and island conservation program in Honduras
• Analyses of sustainable financing options for Peru's Cordillera Azul National Park, Yanachaga Chemillén National Park, and Pacaya Samiria National Reserve
• Technical assistance in the development of a trust fund for Liberia's nascent protected areas system
• Design of a Bulgarian Protected Areas Fund
• Financial planning for The Nature Conservancy's investment in a community-based eco-tourism operation in Jamaica's Cockpit Country
• Financial analyses of Conservation International's sustainable forestry and non-timber forest product programs in Guatemala and Ecuador
• Assessing potential economic development opportunities for communities neighboring Bulgaria's national parks
• For World Wildlife Fund (WWF) estimating the economic value of the Mekong River's natural flood regime in Cambodia
• For World Bank, analyzing land use economics in the cocoa belt of Southern Bahia, Brazil
• For Inter-American Development Bank (IDB), assessing the value of timber concessions in Suriname in an effort to rationalize resource management and to quantify the opportunity cost of forest conservation
• For the Union of Concerned Scientists, projecting the potential financial flows to tropical biodiversity conservation from the Clean Development Mechanism of the Kyoto Protocol
• For a small local NGO in Bahia, Brazil (IESB), valuing the avoided costs from watershed protection for the water supply of the city of Ilheus, Bahia in Brazil