OPTIML's mission is to digitalize real estate investment for sustainability. OPTIML is an end-to-end software platform harnessing the power of optimization to generate intelligent low cost and low carbon investment strategies for existing buildings. Real estate owners and consultants benefit from the novel data driven approaches scaled from the asset to portfolio level with increased productivity and accuracy for multi year planning. With OPTIML-asset, long term strategies to 2050 can be developed for any unique building asset considering all aspects of renovations for asset and construction management. Minimal data input is required but the models can be leveraged with maximum customizability. Scaled to any number of buildings, OPTIML-portfolio develops portfolio budgetary and CO2 pathways considering asset level granularity with minimal planning cost.