PSW, founded in 1982 and based in Bridgeville, Pennsylvania, is a residential construction and general contracting firm serving the Pittsburgh area. The company designs and builds custom outdoor living spaces and landscapes, including luxury pools, hardscapes and retaining walls, patios and driveways, outdoor kitchens, fireplaces and fire pits, pergolas, water features and ponds, and landscape lighting. Services also cover site work and maintenance such as excavation, grading, boulderscaping, soil and aggregate removal, lawn installation and replacement, seeding, mulching, edging, weed control, tree and shrub planting and replacement, pruning