The construction sector can take advantages of additive manufacturing capabilities to fabricate parts with complex geometries, alongside notable improvements in reducing energy consumption, diminishing carbon footprints, and cutting down on material waste. Being a highly standardized sector, the industry requires steel grades compatible with the existing material grades for standalone parts as well as components to be welded or bolted to a larger structure. Wire arc additive manufacturing (WAAM) can provide the means for producing large components with sufficient geometrical accuracy and productivity, needed for the construction sector. With compatible alloy types WAAM can also be exploited to build on conventionally produced steel profiles leading towards a more sustainable hybrid manufacturing scheme. On the other hand, processability of alloy types compatible with the construction sector and their mechanical properties should be established with the WAAM process. The subject of the present study is WAAM of a low-carbon and high-strength with the chemical composition equivalent to a S700 steel. Samples for microstructural and mechanical assessment were obtained. The microstructure was studied using Light Optical Microscopy (LOM) and a Field-Emission Gun Scanning Electron Microscopy (FEG-SEM); additionally, Electron Back-Scatter Diffraction (EBSD) was used to reveal phases and grain structure. The results showed that the new steel grade processed through WAAM mainly consists of a bainitic microstructure. The mechanical properties were studied through hardness and tensile tests. The hardness was evaluated through Vickers test using a load of 500 gf and an indentation soaking time of 15 s. The tensile tests were performed on dog-bone specimens according to ASTM E8 standard, and the samples were machined from the wall in three different configurations, having the longitudinal axis at 0°, 45° and 90° to the building direction to assess mechanical anisotropy. Finally, the fracture surfaces of the broken specimens were analysed to determine the fracture mechanism.