Vegetation has been advocated a pivotal role in urban hydrological processes. In this sense, Low impact development (LID) systems have developed, mainly from bioretention cells’ application and flow convergence to open spaces, aiming hydrological processes recovering. Such advances are somehow new and poorly tested in Brazilian grounds. In this study, we proposed to assess the effect of applying bioretention cells, downspour disconnection, bioswale cells and open spaces conservation for controlling runoff peak and volume in a hypothetical condo 10-year rainfall event. We adapted a rainfall-runoff model to compare runoffs from such condo with three land use scenarios: (i) conservation of condo’s natural surface area; (ii) condo designed with a hygienist system, and (iii) condo designed with a detention facility for peak flow control to natural surface flow peak values. We were actually focusing on the effect of applying hygienist (no control), end-of-pipe (peak flow control) and LID facilities (peak and volume control) only. From this study, we learned that it is possible: (i) to simulate drainage systems with rainfall-runoff and flood routing models; (ii) to approach bio-retentions design and the length of open spaces needed to match volume and flood peak values to unoccupied figures.