D3.3 Plan for evaluating barriers and enablers for green roof insurances in the Netherlands

This deliverable is part of the PIISA project WP3 Pilot 1, aimed at exploring the barriers and enablers of green roofs. The focus of this pilot is to understand how green roofs can be upscaled through policy interventions, incentives, and behavioural motivations. The pilot uses a nationwide survey to evaluate public preferences for green roofs and the effectiveness of both monetary and non-monetary incentives in the Netherlands. This deliverable presents the research framework and the methods developed for this survey. The survey design is made of two parts. The first part is a Discrete Choice Experiment (DCE) to capture the population's Willingness to Pay (WTP) for green roof attributes. In addition, various information nudges are used to capture how WTP for green roofs can be influenced by information. The second part is a series of policy scenarios, in which we assess how different incentives affect respondents' choices. These choices are influenced by respondents’ attitudes, covering environmental beliefs, altruism, time preferences, and the attitude constructs of Protection Motivation Theory (PMT). This framework allows us to assess the motivations for adopting risk-reducing behaviours like green roof implementation. The findings from this research will help develop policy recommendations, incentives and insurance solutions for upscaling green roofs, contributing to urban climate change adaptation strategies. The results will also be applied to other climate contexts in subsequent project loops, including Boreal and Mediterranean regions, to explore the broader applicability of these solutions. Additionally, the survey work conducted in this pilot is linked to the WP1 survey, which explores attitudes and knowledge related to adaptation, Nature-Based Solutions (NBS), as well as green roofs across European countries.