Replicable residential design options are proposed in Tier 2 cities which show great potential growth, for the 5 distinctive climate zones of India, by incorporating an "Integrative Design approach." This provides the user contingent choices, amalgamating passive & active techniques, which in turn provides an integrated design of buildings. The user can opt for a design option from four levels of energy efficiency cases, which are arrived at based on careful selection of Building Envelope, Lighting, Ventilation, and choice of Material & Equipment. The iterations help the user systematically evaluate, the best-case scenario with respect to Energy performance, Carbon dioxide emission, Daylighting & Natural ventilation analysis, Cost-Benefit & Life Cycle Analysis, thereby able to mitigate the adverse effects of Climate change on the built structure.