Land Value Zones Automation for Land Market Information (Case Study of Desa Nagrak Kecamatan Gunungputri Kabupaten Bogor)

Abstract

In Indonesia it is a reality that terminology of valuation is connoted to several institutions attached with their respective interests. For instance, PBB relates to taxation, BPN terms valuation for expropriation, while banks define valuation in term of credits, etc. PBB has collected transaction values from previous years to assign land value zone. These zone are visualized in Zona Nilai Tanah Map (ZNT map), which is nearly similar to a sketch map. This map is produced through delineation of such zone manually, performed by the expert. Valuation by BPN in general is not yet applied, however there is a prototype produces by Indonesian Land Assessment Project (INLA Project). This prototype uses the analyzing market data and developing the valuation models. Valuation model consist of value maps with value zones and tables or formulas for valuation of each property. Based on that condition, this research is intended to develop the determination of land value zones by applying the road type approach and its transaction values to produce automatic land value zone map, with study case in Desa Nagrak, Kecamatan Gunungputri, Kabupaten Bogor. It is then expected that this research will provide a lot of benefits not only to BPN and PBB but also to other interested parties. The automation includes the preparation of specific data for land value zone and programming by using Avenue Script of ArcView 3.2 and its Spatial Analysis Extension. In this automation, the expert influences are minimized. As the result, the validation process verifies every block of the land zone. Based on the pattern of shape and location, the verification result of the land value zone automation compared with the land value zone (ZNT) from PBB.