Análise dos custos de construção de uma habitação de interesse social elaborado pelo conceito de design science com elementos de sustentabilidade

Abstract

This study aims to assess the financial feasibility of a sustainable affordable house project, focusing on meeting the needs of low-income populations. Additionally, it seeks to compare the costs of an affordable house built with sustainable methods and materials to one built with traditional construction methods and materials. The rationale for this study is based on the fact that affordable houses are intended for low-income families, which imposes economic constraints on the project’s feasibility. The financial metric used for this evaluation is the discounted Payback period, which is suitable due to the uncertainty of cash flows throughout the project and the need to account for the time value of money. Considering an attractiveness rate of 5.98% and an annual savings of R$ 4,202.21 from reduced water and energy consumption, a Payback period of 15 years was obtained for the return on the initial investment of R$ 55,736.24, corresponding to the implementation of sustainable features. Thus, the results highlight the economic viability of the proposal, demonstrating its potential to promote sustainability and long-term financial returns.