One of the key development outputs of working with Vertrag Planejamento was Nathan's project with the Santa Helena Plano Diretor. The Diretor is a federally mandated city plan required for all municipalities with populations greater than 20,000 or of specific environmental or strategic significance.

Nathan is working with Vertrag Planejamento and Luis Fragomeni on their project to develop a strategy to convert a vital connection in the park system from residential occupation to protected parkland. One of Curitiba`s most famous features is its expansive park system. Protecting and expanding these green spaces is an integral part of Curitiba`s long-term plan.