The most recent developments in architectural design are inventions that are convenient to maintain and economical. Marcus Hiles has witnessed the spike in demand for open-air spaces that are workable and also cut expenses. Ecological and preservation choices for example rainwater/graywater harvesting and permeable pavement are frequently followed methods. By using rooftop collection structure, rainwater harvesting sends wetness from the air for storage in a well to be disinfected and reused on-site. Graywater uses home wastewater and sends it to lavatories and non-drinking purposes, reducing fresh water needs and saving resources on purification. A worthy idea for eco-friendly construction, permeable paving, goes back to thousands of years to an era when citizens first assembled roads by putting stones in beds over the ground. The technique allows the rain to pass through tiny openings among four layers of purification (paving material, gravel, fabric, sand) before getting soaked by the earth underneath. Its pros include lowering runoff and pollution, limiting the flow of storm water to gutters and drains, refilling local groundwater supplies and providing a skid resistant surface for walkways, patios and driveways; their several striking patterns often feature crushed stone, brick, and recycled concrete.