The Biodiversity and Ecosystem Services Monitoring System in Curridabat is an instrument for monitoring the environmental quality of the territory. It seeks to reintroduce biodiversity in the urban space according to the natural location of Curridabat, prioritizing biodiversity conservation as a fundamental basis for the continuity of ecosystem services. This system is part of a development model called Ciudad Dulce that has the canton that seeks the transformation of urban spaces. The objective of Ciudad Dulce is to logically integrate the sustainable development of a medium-sized city, improving the experience of the canton's citizens by addressing five dimensions: biodiversity, habitat, infrastructure, coexistence and productivity. The monitoring system makes it possible to evaluate the social and environmental benefits of the actions implemented and goes hand in hand with an urban planning process to improve the canton's ecosystem services.