A hardscape in Washington is essential to make your garden or yard more accessible to people. Without it, navigating through your property can be difficult and can be damaging to your plants. There are several factors that affect the cost of a Washington hardscape installation and that basically includes the design of the hardscape, the kind of hardscape, the materials, and labor cost. It has been estimated that on average, a homeowner spends around $600 up to $1,300 for installation of hardscapes in their property. A patio is a common hardscape in Washington feature that usually costs $800 to $1,200 to install. Pathways can be built at approximately $500 to $800 and sidewalks can cost you around $400 to $700. You can have an elegant retaining wall installed for a minimum of $1,000 that can go as high as $5,000 depending on the materials that you will used and the height and length of the retaining wall. Other common Washington hardscape features that you can install in your garden are gazebos, arbors, fountains, and barbeque.