Economic data
Regeneration and the Regions
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The 3Rs Guidance (PDF, CLG website, opens in new window)
Appraisal guidance on assessing the impact of spatial interventions - Regeneration, Renewal and Regional Development - which often have distributional impacts. -
Guidance for RDAs in Appraisal, Delivery and Evaluation (PDF, BIS website, opens in new window)
This guidance sets out the principles and key stages for project development, appraisal, approval, delivery, monitoring and evaluation. It provides a framework for Regional Development Agencies to develop the most appropriate project systems for their particular circumstances.
Additionality
Proposals with regional or local aims should be assessed in terms of their additionality. This is their net, rather than gross impact, after making allowances for what would have happened in the absence of the intervention, and after looking outside of the target area or group to account for leakage, displacement and substitution effects, and after considering multiplier effects.
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Homes and Communities Agencys' Additionality Guide (opens in new window)
This guide sets out the basic methodology and key issues in assessing the additional impacts of an intervention, and also contains illustrative worked examples showing how additionality should be assessed for different intervention types, e.g. housing, commercial development, transport, crime prevention, education, and health.
The ideal approach in all circumstances is to use project specific data to assess additionality. However, where this is not proportionate, this BIS research paper uses statistics from 280 project and programme evaluations to produce mean additionality figures for different intervention types. The accompanying 'Guidance for using additionality benchmarks' sets out how and when the benchmark figures should be used.
- BIS/CEA Research to improve the assessment of additionality (PDF, BIS website, opens in new window)
- Guidance for using additionality benchmarks (PDF, BIS website, opens in new window)
Optimism Bias
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CLG Guidance on Optimism bias (PDF, CLG website, opens in new window)
Link to the 'optimism bias in appraisal' section of the CLG website, where research reports and guidance notes can be found on optimism bias in contexts including regeneration projects, Decent Homes projects, and fire projects.
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