Development appraisal tool

The development appraisal tool reviews the viability of an individual development site.



The development appraisal tool is intended for use on small and medium to medium/large size schemes with a development period of up to 15 years.

The tool can be used to:

  • analyse whether the level of required planning obligations is viable
  • help local authorities consider the balance between affordable housing and other planning obligations
  • assess the case for financial support from the Homes and Communities Agency under the Affordable Homes Programme
  • assess the potential land value where a local authority is considering a disposal
  • bid for development of public land under the agency’s Development Partner Panel 2 process

A bid comparator is available to help compare a number of submissions and their assumptions.

Version 4.02 of the model has 5 phases for all tenures and infrastructure, to enable modeling of longer term schemes.

Excel 2003 users with all service packs installed can open the Excel 2010 version 4 file and ‘Save as’ an Excel 97-2003 .xls file.

Published 13 November 2014
Last updated 24 November 2017 + show all updates
  1. Updated development appraisal tool version 4.05
  2. Updated with version 4.04
  3. DAT version 4.03 uploaded (maintenance release)
  4. Version 4.02 released.
  5. Security update version - December 2014
  6. First published.