This document summarizes a scoping study on building biodiversity business. It finds that while protected area numbers and coverage are growing, more is needed to stem biodiversity loss. It analyzes sectors like agriculture, forestry, and ecotourism and finds opportunities in areas like conservation carbon, biodiversity offsets, sustainable biofuels, and biodiversity management services. It recommends developing business plans and pilot projects for these "best bets" to test concepts and kickstart the biodiversity market.