In Brazil’s expansive ecological mosaic, specially protected areas serve as sanctuaries for biodiversity and natural harmony. The Nature Conservation Units Act (Law n. 9.985/00) and the Forest Protection Code (Law n. 12.651/12) establish the cornerstone of this protection. The first statute creates a framework of fully protected and sustainable use conservation units. Fully Protected Areas are almost untouchable, permitting only indirect use, while Sustainable Use Units aim to balance ecological preservation with limited human activity. Regarding the Forest Protection Code, Permanent Preservation Areas (APPs) are critical for safeguarding water, soil, and biodiversity, overlay this framework. These areas, found across both urban and rural landscapes, face mounting challenges from illegal occupation and conflicting regulations. Courts have upheld the inviolability of APPs, enforcing restoration and rejecting proportionality arguments for long-standing illegal occupations. Yet, recent legislation empowers municipalities to redefine APP dimensions in urban areas, sparking debates over the balance between development and ecological integrity. The Forest Protection Code also mandates Rural Property Preservation Areas (Reservas Legais), enforcing minimum preservation thresholds on private lands. A market-based compensation system allows landowners to trade surplus preserved areas, promoting compliance while accommodating economic realities.