Sophisticated outdoor designs that are suitable to maintain and reasonable are the latest in architectural advancement. Marcus Hiles has seen the development in demand for open-air spaces that are sustainable while also being inexpensive. Environmental and conservation options such as rainwater/graywater harvesting and permeable pavement are methods followed most often. Using rooftop collection methodology, rainwater harvesting channels liquid from the air for storage in a well to be disinfected and reused on-site. Graywater makes use of household wastewater and sends it to toilets and non-drinking purposes, dropping fresh water needs and preserving resources on purification. A clever idea for environmentally minded construction, permeable paving, goes back to thousands of years to an era when people first built roads by putting stones in beds over the ground. The technique allows the rain to pass through small openings among four layers of filtration (paving material, gravel, fabric, sand) prior to getting absorbed by the ground under. Its benefits include lowering runoff and pollution, constraining the flow of storm water to gutters and drains, replenishing local groundwater supplies and offering a skid resistant surface for walkways, patios and driveways; their various beautiful patterns often feature crushed stone, brick, and recycled concrete.