King County Parks Central Maintenance Facility
Seattle, WA
King County Parks manages a vast and varied system of parks, from Vashon Island to the Cascade Mountains, supported by crews ranging from backcountry trail teams to carpenters and nursery staff. Their new headquarters was envisioned as a highly functional base of operations that also reflects and celebrates the work done across the county every day. Offices and shared spaces are positioned to maximize daylight and views of the landscape, reflecting KCP’s strong connection to Washington’s climate and landscape.
Our team began by touring their existing facilities, from carpentry shops and the lumber mill to the nursery and park sites, to understand the materials, techniques, and craft that define KCP’s work. That research shaped the site design: Benches, the boardwalk, wood curbs, and signage were fabricated from reclaimed lumber sourced from the department’s own stock and reflect a ruggedness indicative of trail infrastructure. The planting design focuses on native plants and includes forageable plant species, directs roof runoff to a large bioretention garden, and uses stormwater galleries beneath the parking area. The bioretention area creates a green respite for staff, with seating and boardwalk paths offering space to step outside and connect with nature. At the entry, a kiosk displays trailhead plaques from across the county, celebrating a range of noteworthy sites, as well as sites with especially compelling or funny names.
Sustainability goals were set early, with the project targeting Living Building Challenge petals. While the south edge of the site focuses on landscape and staff amenities, the remainder of the headquarters supports operational needs: a large vehicle yard, material storage, and trade shops. Together, these elements create a headquarters that is both efficient and a reflection of King County Parks’ mission and craft.
Seattle, WA
King County Parks manages a vast and varied system of parks, from Vashon Island to the Cascade Mountains, supported by crews ranging from backcountry trail teams to carpenters and nursery staff. Their new headquarters was envisioned as a highly functional base of operations that also reflects and celebrates the work done across the county every day. Offices and shared spaces are positioned to maximize daylight and views of the landscape, reflecting KCP’s strong connection to Washington’s climate and landscape.
Our team began by touring their existing facilities, from carpentry shops and the lumber mill to the nursery and park sites, to understand the materials, techniques, and craft that define KCP’s work. That research shaped the site design: Benches, the boardwalk, wood curbs, and signage were fabricated from reclaimed lumber sourced from the department’s own stock and reflect a ruggedness indicative of trail infrastructure. The planting design focuses on native plants and includes forageable plant species, directs roof runoff to a large bioretention garden, and uses stormwater galleries beneath the parking area. The bioretention area creates a green respite for staff, with seating and boardwalk paths offering space to step outside and connect with nature. At the entry, a kiosk displays trailhead plaques from across the county, celebrating a range of noteworthy sites, as well as sites with especially compelling or funny names.
Sustainability goals were set early, with the project targeting Living Building Challenge petals. While the south edge of the site focuses on landscape and staff amenities, the remainder of the headquarters supports operational needs: a large vehicle yard, material storage, and trade shops. Together, these elements create a headquarters that is both efficient and a reflection of King County Parks’ mission and craft.
