by ASHRAE, is required in order to complete a commercial building deep energy retrofit. Also known as an investment grade audit, this type of energy audit features analysis of the interactions between efficiency strategies and their life cycle cost. Upon selection and implementation of measures, the energy savings are verified using the International Performance Measurement and Verification Protocol. Tools Deep energy retrofits make use of energy modeling tools that integrate with an organization's pro forma or other financial decision making mechanisms. Smartphone technologies have simplified the retrofit process as a number of audit and retrofit tools have appeared over the last 5 years to speed up retrofits and maximize efficiency in the field. Ratings A building that has undergone a deep energy retrofit is well positioned for a green building rating such as LEED. Energy and Non-energy Benefits There have been a number of studies done to determine and quantify the benefits afforded to owners, tenants, and various other stakeholders from the successful completion of deep energy retrofits. The following tabulation by the Rocky Mountain Institute lays the efficiency measures undertaken in a deep energy retrofit project in correspondence to the building performance improvements and therefore, the quantifiable and non-quantifiable values generated from implementation of such a project. Policy framework for retrofitting A paradigm shift is needed to achieve the motive of climate change mitigation through retrofitting. This shift is underpinned by a greater need to propagate behavioral change rather than just the technology implementation. The framework should move from a project focus outlook towards an understanding of a larger scale execution that includes social awareness and interests. Hence, the need for laying down large scale retrofitting programs that support the idea of cities as active sites to inculcate newer technologies. Global "Buildings will also be particularly affected by the effects of climate change: storms, flooding and seepages, reduced durability of some building materials and increased risk of structure damage or collapse (e.g. from severe storms) could all decrease building lifetime, while increasing health-related risks such as deteriorating indoor climate." (The GABC Global Roadmap) From the industrial revolution, fast forward to a few centuries later. We have come far ahead with global warming and climate change. To counter the global temperature-rise problem, a decision was reached at the Paris agreement in 2015, wherein member nations pledged to maintain temperatures below 2℃, compared to pre-industrial levels. The Global Status Report 2017