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One of the most expensive assets in a company,the real estate,is a determinant asset to several corporate factors like economic resources allocation,workplace environment and its influences over corporate culture and behavior,organizational productivity,personal satisfaction,and the facilities management relationships.The use of the provided space must be ensured and charging for it a useful way to achieve this goal.（Barker,2013）The elimination of inefficient space usage can produce positive results of saving on services,utilities,and taxes associates with the wasted space.Charging the department managers for used space is a typical recommendation on the F.M.books,and every workspace must be documented and their information kept.To help with this register,besides the layout documentation,the following information is surveyed: Total Area,Capacity,Occupant Count,Occupancy Rate,Vacancy Rate,Planned Density,Space Assignment by Occupant,Vacant Seats,Space Assignment by Department,and Open Plan/Close Office Percent.The calculation of the allocated area for Space chargeback,a corporative rental fee,can be done in various ways.Hence,this work defines the parameters and standards to establish the calculation through Building Information Modeling（BIM）models.BIM model is a representation of a building,like a digital twin of it（Sanquist ＆Poskie,2016）.BIM converges the three-dimensional characteristics and the construction properties,allowing to simulate the building`s behavior.Originally created for design constructions,BIM can hold the model-specific standards as rooms,room number,workstations,keeping the relevant background information and removing unnecessary information as construction details and working drawing sheets.（Sacks,Charles Eastman ＆ Lee,Paul Teicholz,2018）This work makes use of Autodesk Revit,the most popular BIM software,to design a building model and extract its information.At the sequence,the model prepared for space management holds construction information and the office layout model.The construction model includes floors,walls,ceilings,doors,windows,circulations,and other built elements,while the office layout model includes dividers,furniture,electrical equipment,and other joint or placed elements.The layout is designed to promote the efficiency of the workplace,respecting building regulations.The changes that can involve moving the whole department from one building to another or changing the current workplace to comprise modifications necessaries to the department’s new demands are also subjects of the work.For this reason,this work designs a mockup model,in which five different layouts are proposed over the same floor plan,to make the studies of space’s efficiency,and also the impact of COVID-19 pandemic social distancing requirements.Subsequently,the modeling and information input data is exported and analyzed through Power bi.The analysis is related to the Space chargeback and managerial decisions on space-saving,vacant position,percentage of the occupied area,and space control.This work analyzes the department’s occupation in a workplace,the occupation rate of a layout,the impact of social distancing,due to COVID-19,in a workplace layout and its efficiency,and a statistical analysis involving Occupation index and workplace covariates.