This research focuses on describing the ability of adaptivity toward continual optimization within architecture. The attributes of adaptivity are always reliant on information and the capacity to obtain it. If the source information is incorrect, it is safe to conclude that whatever the output is, it will be neither optimized nor adequately adaptable, resulting in an unsuitable variance. Thus, the thesis elaborates on how passive and energy-efficient buildings are designed, pointing out that technological systems implemented in these types of constructions go hand in hand with their immediate environment. In this sense, if the surrounding area changes, all systems would be influenced resulting in an overstress. This fact in turn results in the consumption of supplementary resources to recover its balance. Thus, to mitigate this situation the solution proposed will turn to nature to learn about its vast means of adaptation. Adaptivity represents a process through which an organism can become more tolerant to the alterations of its habitat. This case is also enforced within architecture since buildings are constantly “evolving” following the setting in which they reside. As a result, architecture may be regarded as a form of adaptation. However, our strive is not concluded with only this statement, since external forces become harsher by the passing of each year. Thus, it is considered that adaptability in architecture has to endeavor towards quicker responses, or at the very least take into consideration the possible climatic shifts of the surroundings. In the past few years, the development of adaptive architecture has paid attention towards implementing kinetic, dynamic, and responsive systems and facades through experimentations in the fields of materials and mechanisms, i.e., Al Bahar Towers (Dubai), Media-TIC Edifice (Barcelona), Theme Pavilion (Yeosu), etc.; the trend eventually starting to shift focus from surface/envelope towards an intra-body approach, paying more attention to the user’s constant fluctuance within comfort and wellbeing. Thus, the research assumes that the need to fully combine physical and digital techniques represents a complementary opportunity, and also influences its full impact regarding its climatic circumstances. For any adapted or adaptive development to function as intended, it is imperative to completely comprehend the environment in which it will be placed. This implies a thorough climate data collection that is specific for every site. In this sense, the approach entails the development of an Environmental Data Indexing System (further referred to as EDIS) dedicated to accounting for the lack of climatic information. Complementary to this, an Adaptive Building Efficiency Methodology (abbreviated as ABEM) is furtherly envisioned, which is meant to guide architects and designers through the vast disciplines of energy efficiency strategies, adaptivity conceptualizations, and environmental evaluation to achieve the most conscious result for the setting in which it would be developed. The tools used within the ABEM use a procedural basis with input subjects coming from informational applications derived from energy efficiency standards, and the EDIS collected data. This research contributes to the development of resource-efficient building methodologies that positively interact with the natural environment. This is made feasible by the EDIS's continuous environmental feedback alongside a highly energy-efficient edifice. Based on the ABEM, methodological inputs include practical and theoretical expertise for greater understanding, execution, analysis, and evaluation of architectural morphologies, building envelopes, and adaptable solutions