Planning guidelines are important tools in controlling the development of housing projects in urban and rural areas to ensure sustainable development (a development that meets the needs of the present, without compromising the ability of future generations in meet their own needs). Planning guidelines are used by local planning authorities (PBPT) to ensure uniformity, comfort and safety in land use activities to achieve effective housing development projects which meet the needs of the communities and create a comfortable living environment. The local planning authorities have developed a set of planning guidelines to be adhered to in all development projects in Malaysia. The main problem of the existing planning guidelines is that they are prepared in the form of reports which are not user friendly. In order to address this problem, a digital version of planning guidelines called the Public Facilities Guidelines Calculator for Sustainable Housing Development is invented. The main objective of this invention is to develop a digital version of planning guidelines which are more user friendly to help the users in accessing the ‘exact’ information ‘easily’ and in an ‘express’ manner (3E’s). The calculator is hoped to be able to provide assistance to town planners, consultants, land developers, and students in preparing the development layout which fulfils the development requirements for planning permission applications. Additionally, the calculator is expected to ease the job of local authorities in determining whether the proposed development layout is aligned with the planning guidelines so that timely planning permission can be issued.