As more communities limit the amount of impervious surfaces (rooftops, conventional hardscape) allowed on residential lots, interest in pervious paving has skyrocketed. "It can literally be a trade-off between installing a pervious driveway and adding a room," says designer Jan Johnsen. "Or a question of whether you can build that new patio at all." In those cases, pervious paving is not only an attractive way to deal with runoff, it's a double-duty enhancement, one that lets you keep on improving your home while you safeguard its natural environment.
Shown: Some concrete pavers have larger spaces to hold sand and turf grass, which absorb some storm water near the surface.