MODEL ANALISIS HARGA SATUAN KOMPONEN PEKERJAAN DI PROVINSI D.I.YOGYAKARTA BERDASARKAN PADA DATA HISTORIS PENAWARAN KONTRAKTOR

Abstract

Construction projects always face up problems in estimating the unit price quickly inthe planning, implementation, and maintenance phases. Especially forbuilding maintenance works,the unit price (UP) estimation is often difficultnor inaccurate. A UP planning, usingthe highest local price issued by the local government, results in the higher UP compared to the market price. This research aims to develop an empirical model for UP estimation based on inflation rate and project locationas the parameters.The UP data were collected from contractors, having carried out building maintenace works in different locations, and price increase and locationindexes were used. The price increase index was obtained from inflation rate reffered to the government of Yogyakarta Province, and the work location indexwas based on Decree of Ministry of Public Works and Public Housing, entitled Unit Price Analysis for Public Works (No:28/PRT/M/2016). The UP data were analysed using the linear trend method.This study generates an empirical formula that can be used to estimate the UP in Yogyakarta. To use the model for Sleman, Kulonprogo and Gunung Kidul regencies, the location indexescan be used as multiplying factors. The result showed 36 models, only 4 modelsof them can be useto estimate the UP accurately with determination coefficient (R 2) > 0,7.