Cultural heritage-specific research is scarce within the climate change literature and climate change policy documents, challenging climate adaptation efforts to minimize adverse impacts on cultural heritage. Engaging and assessing diverse stakeholders' values and integrating those with evidence-based knowledge is critical for timely, effective and transparent preservation and climate adaptation of coastal cultural heritage. This study assessed technical experts' and community groups' opinions about the importance of value-based prioritization considerations to provide more immediate guidance adaptation planning and decision making. The findings from four separate elicitation surveys demonstrated substantial consistency in value-based climate adaptation prioritization preferences for one type of vulnerable cultural heritage: historic buildings in coastal zones in the United States. In particular, the samples of cultural heritage professionals and members of community groups consistently rated spatial importance, uniqueness, and scientific value of historic buildings as very important considerations for climate adaptation prioritization decision-making. Also, consistently evaluated but of relatively low importance were considerations related to the cost of preservation and adaptation treatments, including previous investments. Few statistically significant differences were found among our samples in their perceptions of importance. These findings provide initial guidance to cultural heritage managers, particularly those with scarce financial resources to allocate for adapting coastal historic buildings, and demonstrate the need for continued development of approaches that provide rapid assessment of coastal heritage stakeholders' adaptation priorities.

Climate change poses great challenges for cultural resource management, particularly in coastal areas. Cultural resources, such as historic buildings, in coastal areas are vulnerable to climate impacts including inundation, deterioration, and destruction from sea-level rise and storm-related flooding and erosion. However, research that assesses the trade-offs between actions for protecting vulnerable and valuable cultural resources under budgetary constraints is limited. This study focused on developing a decision support model for managing historic buildings at Cape Lookout National Seashore. We designed the Optimal Preservation Decision Support (OptiPres) model to: (a) identify optimal, annual adaptation actions for historic buildings across a 30-year planning horizon, (b) quantify trade-offs between different actions and the timing of adaptation actions under constrained budgets, and (c) estimate the effectiveness of budget allocations on the resource value of historic buildings. Our analysis of the model suggests that: (1) funding allocation thresholds may exist for national parks to maintain the historical significance and use potential of historic buildings under climate change, (2) the quantitative assessment of trade-offs among alternative adaptation actions provides generalizable guidance for decision makers about the dynamics of their managed system, and (3) the OptiPres model can identify cost-efficient approaches to allocate funding to maintain the historical value of buildings vulnerable to the effects of climate change. Therefore, the OptiPres model, while not designed as a prescriptive decision tool, allows managers to understand the consequences of proposed adaptation actions. The OptiPres model can guide park managers to make cost-effective climate adaptation decisions for historic buildings more transparently and robustly.