Abstract: For sustainable care of cultural heritage it is essential to set accurate goals. However, the difficulty involved in establishing what is accurate in any given circumstance is often highly underestimated. Unbalanced decision making based on partial consideration of the situation surrounding a cultural heritage asset can at best result in inefficient use of resources and at worst will lead to its rapid loss. But the balance of risk against benefit is not straightforward, the impact of certain activities are far easier to quantify than others. Consequently, the adoption of a well balanced approach that considers all activities equally within the same framework is the key to providing appropriate and sustainable levels of protection. The development of an appropriate and systematic methodology offers a resolution to this problem. The outcome will be a suite of performance indicators assigned to each activity within a multivariate management framework. This paper describes the development and validation of such a methodology and the current status of the author's research.