Based on these concepts is the importance of this study, considering that according to the IBGE Census (2010), the city of João Pessoa is in accelerated population growth, which can be proven with the significant expansion of the urban network between the years of 1990 and 2006, and the appearance of these occupations / agglomerations in the area under study, which is the neighborhood of Gramame, located in the southern zone of the municipality of João Pessoa, and according to the IBGE Census (2010) The neighborhood had the highest population growth in the city, rising from 6.2 thousand inhabitants (2000) to more than 24.9 thousand inhabitants (2010). The data used were: the delimitation of the municipality of João Pessoa and the neighborhood of Gramame, the lots present in the neighborhood and the bodies of water that cut the city, obtained from the Municipality of João Pessoa - PB (PMJP), In shapefile format; And SRTM / TOPODATA images for the slope computation. The software used was Quantum GIS 2.18.0. Through these data the criteria to be consulted were defined, aiming at the identification of lots with potential vulnerability to invasion: (a) public and empty lots; (B) without wall and without occupation and (c) without garbage collection and sewage network. Through the geoprocessing and its tools it became possible to identify public batches susceptible to irregular occupations, and later the representation of this spatial information.