Conceptual Estimation of Cost Significant Model on Shop-Houses Construction

Abstract

The construction of shop-houses and houses in big cities and small towns is currently being constructed constinously. Because both types of buildings, shop-houses and houses are basic people needs. Anyone who want to build shophouses and houses need to prepare the costs as a basis for considering the feasibility of construction investment. So, the estimated cost of constructionshop-houses and houses as the basis of the construction is very important. However, it is difficult to estimate these costs if the data needed are not available. The trend of estimated construction costs at this time is calculated per square meter. However, this method is not truly accurate to estimate the construction costs of the buildings. The inaccuracy in estimating the costs cause detrimentsfor people who wants to build a shop-houses and houses. The solution to solve problem is by applying a good Model. To result agood model, then conducted a research by quantitative method approach.The data used in this study are primary data and secondary data. Primary data is obtained by building shophouses and houses who built by the author., while secondary data obtained through survey and interview. While secondary data is derived from contractors.Both types of data are Construction Project Documents.The number of data is 62 (sixty-two)form big cities and small towns. Then, the data are processed and analyzed using regression analysis method. From the results of the analysis found the model as a formula for estimating the cost of construction of shop houses and houses. The estimation cost of construction shop-houses and houses in big cities uses doors frames, floors, Foundation and sanitaries. While the estimation cost of the construction of shophouses and houses in small cities uses roof, door frames, structures, walls, and the floor. The model has been tested through analysis test and validation test accuratly and fast.