• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.577-580
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• 2003

The purpose of this study was to make a database model for financial feasibility study of buildings offered for sale which is helpful for improvement of business ability in construction and confidence of a project from a related participant. At first, we studied several thesis and met some professionalist which work for construction and did a first survey for examining latest situation of a feasibility study in construction. As a result, even though feasibility study is important, factors for information management wasn't systemized. So we did a second survey for fixing Factors of the database model. The database model was composed of the factors that we got from the second survey. ER(Entity-Relationship) analysis was used to making it. We expect thar we can get more reasonable information to study financial feasibility study and can diminish risks of project through the database model. So the result of this study was to make a database model for more reasonable financial feasibility study of building offered for sale.

• Land and Housing Review
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• v.12 no.4
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• pp.93-101
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• 2021

As the number of small households (1 to 2 persons per household) in Korea gradually increases, so does the importance of housing supply policies for small households. In response to the increase in small households, the government has been continuously supplying urban housing for these households. Since housing for small households is a sales and rental business similar to apartments and general business facilities, it is important for the building owner to calculate the project's estimated construction duration during the planning stage. Review of literature found a model for estimating the duration of construction of large-scale buildings but not for small-scale buildings such as urban housing for small households. Therefore this study aimed to develop and verify a model for estimating construction duration for urban housing at the planning stage based on multiple regression analysis. Independent variables inputted into the estimation model were building site area, building gross floor area, number of below ground floors, number of above ground floors, number of buildings, and location. The modified coefficient of determination (R_a²) of the model was 0.547. The developed model resulted in a Root Mean Square Error (RMSE) of 171.26 days and a Mean Absolute Percentage Error (MAPE) of 26.53%. The developed estimation model is expected to provide reliable construction duration calculations for small-scale urban residential buildings during the planning stage of a project.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.431-435
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• 2007

Green Building Certification Program, which was first introduced to residential buildings in Korea in 2002, has been put on track. This program is expected to bring about the effect in the economic viewpoint that was based on a life-cycle-cost analysis, not to mention the environmental viewpoint. However, given the fact that the existing model for feasibility analysis focusing on early investment cost can hardly be applicable to the green buildings because of lacking the life-cycle-cost reduction factor, it remains still difficult to conduct an objective evaluation. The study thus was intended to identify the factors that should be additionally considered in conducting the feasibility study to be implemented through the analysis of the certification items of green buildings as a preliminary study in structuring the evaluation model for feasibility analysis of green buildings.