The Permeable Lot
This pattern is shaped by
Problem
When every driveway, walkway, and patio is paved with impervious material, the lot sheds water like a roof, creating flooding downstream, starving trees of moisture, and turning the property into a heat island. The lot is at war with its own water.
Evidence and Discussion
Any surface that doesn't need to bear heavy loads should be permeable. Permeable pavers, gravel, reinforced grass, porous concrete, and decomposed granite all allow water to infiltrate while supporting pedestrian and light vehicle traffic. They also reduce the urban heat island effect — permeable surfaces stay cooler than asphalt.
Therefore
replace impervious surfaces with permeable alternatives wherever possible. Driveways: permeable pavers or reinforced grass. Walkways: gravel set in resin or paving with planted joints. Patios: stone with open joints over a gravel base. Retain impervious surfaces only where heavy vehicle loads demand them. The target: no more than 30% of the lot area should be impervious.