Stephanie McAllister is inspired by the natural, agrarian and cultural landscapes of Northern California. Her goal is to create artful and innovative landscapes that integrate site and architecture into cohesive site design solutions. She has been practicing landscape architecture in Sonoma County since 1987, combining an expertise in site planning with detailed landscape architectural design.

Each project is approached as an opportunity to create outdoor spaces that function beautifully as work, living or educational places. Sustainable site strategies such as tree preservation, use of local materials, water conservation and stormwater management become integral to the site landscape concept. In addition, the practicalities of project implementation, budget, and long-term maintenance are considered to ensure that design concepts are realized.


Harvard University Graduate School of Design
Master of Landscape Architecture

University of California, Davis
Bachelor of Science, Landscape Architecture

Professional Registration
Registered Landscape Architect
California License 2014

Community Involvement

County of Sonoma Landmarks Commission 2011 – present
City of Petaluma Planning Commission 2002 – 2005
City of Petaluma Site Planning and Architectural Review Board 1989 – 1992
City of Petaluma Tree Advisory Committee 1992