Visualising Landvaluescape without a Cadastre

[摘要] Two technologies are converging: Computer Assisted Mass Assessment (CAMA) within the property valuation field; and Geographic Information Systems (GIS) more generally. Some of the governments using CAMA and GIS claim that there are significant spinoffs, in terms of improved land management. The ability to visualise local economic performance changes over space and time, expressed in the ‘landvaluescape’, can be an important audit tool. A study is under way to assess how CAMA/GIS might help assist in a number of property market functions in the UK, where national spatial data sets are undergoing modernisation and integration. Starting with data obtained for this research from the US, a team is creating a model that might be applied to British conditions. A survey of international practice in these fields is also being carried out. The paper will explain the concept and anticipated benefits, report on the reactions to it so far and describe how the particular conditions of Britain differ from those elsewhere. Issues faced include: policy approaches to price data privacy; levels of aggregation; very variable quality of individual assessments and of other spatial attribute measures; and lack of experience of land valuation in Britain. CONTACTS Tony Vickers MScIS MRICS School of Surveying, Kingston University, London 62 Craven Road, Newbury Berkshire, RG14 5NJ UNITED KINGDOM Tel. + 44 1635 230046 Fax + 44 1635 230046 Email: [e-mail] Mark ThurstainGoodwin BA(Cantab) MSc, Senior Research Fellow Centre for Advanced Spatial Analysis, University College London London WC1E 6BT UNITED KINGDOM Tel. + 44 20 7679 1782 Fax + 44 20 7679 4293