Land Regularization in São Sebastião (SP): Advanced Technologies for Cadastre Update and Land Management

Resumen

The Municipality of São Sebastião (SP), with approximately 402 km² and 84,000 inhabitants, faces significant challenges of disorderly urban expansion, with irregular occupations in areas of complex topography and risk. To support the Urban Land Regularization (REURB) process, a cadastral update of several settlements was conducted through a High-Precision Planialtimetric Cadastral Survey (LEPAC), in compliance with Decree No. 9,310/2018 and NBR 13.133:2021. The methodology synergistically combined technologies such as GNSS-RTK, SLAM, and aerial imagery with 6 cm resolution (GSD), enabling three-dimensional mapping and the precise vectorization of features in densely built-up areas. The data were integrated into the Geopixel Cidades platform, generating a geospatial database for territorial analysis and decision support. Although the approach proved effective, the study acknowledges limitations such as operational field challenges and the need for continuous investment for the cadastre's sustainability. As a result, the municipality advanced in land titling, promoting legal certainty and access to services. The approach establishes itself as a replicable model, demonstrating the potential of geospatial technologies to modernize territorial management and enhance the effectiveness of land regularization policies in Brazil.