A Publicly Available Cost Simulation of Sustainable Construction Options for Residential Houses

A major consideration for consumers and the residential construction industry is the cost–benefit and break-even of various sustainable construction options. This research provides a publicly available simulation that allows users to compare baseline construction options versus sustainable options and evaluates both break-even costs as well as environmental effects. This R Shiny Monte Carlo simulation uses common pseudo-random number streams for replicability and includes options for solar, rainwater harvesting, wells, Icynene foam, engineered lumber, Energy Star windows and doors, low flow fixtures, aerobic/non-aerobic/city waste treatment, electric versus gasoline vehicles, and many other options. This is the first simulation to quantify multiple sustainable construction options, associated break-even points, and environmental considerations for public use. Using user default parameters, coupled with a 100% solar solution for a baseline 3000 square foot/279 square meter house with 2 occupants results in a break-even of 9 years. Results show that many of the sustainable options are both green for the environment and green for the pocketbook.