Civil construction professionals have become more aware of their role in aggravating environmental problems, leading them to search for methods and materials that have less environmental impact. Vegetable fibers have been used as reinforcement over the years to improve the mechanical properties of composites, which are renewable and biodegradable. This research aims at the characterization of biocomposites for social housing manufacture with low environmental impact through the sealing plates compression molded process of jute fiber fabric and vegetable polyurethane matrix and 3D printing of PLA profiles and connections of jute, sisal, and ramie vegetable fiber. For the compression molded plates, a study was made to determine the influence of fiber direction on mechanical properties, noting, through a monotonic bending test, that the main fiber direction (warp of the fabric) has the highest resistance and stiffness, with 37.2 plus or minus 0.9MPa and 10.4 plus or minus 1.1GPa, respectively. Analyzing long term effects, the plates were exposed to ultraviolet radiation. In these tests, the specimens were exposed to a 365nm ultraviolet lamp during three months before being submitted to directional resistance trials in 0 degrees and 90 degrees. Furthermore, with the test results, it was possible to apply the mixing rule inversely to determine the fiber and matrix properties. For 3D printed composites, the influence of fiber type on the material s tensile strength and stiffness was analyzed. The tensile test found significant increases in strength with the use of ramie (61.83 percent) and sisal (110.80 percent) fibers, reaching a strength of 45.5 plus or minus 6.1MPa and 59.3 plus or minus 4.1MPa, respectively.