Quadriga is a landscape architecture and planning practice, with offices in Sacramento and Santa Rosa. Established in 1997, Quadriga was formed to serve clients interested in unique design solutions for complex projects. We design projects that improve and enhance living and working environments while conserving energy, resources, and operational costs. We are committed to advancing our clients’ interests with careful attention to budget and constructability. We strive to exceed our clients’ expectations through the applied principles of stewardship, respect of context, and spirit of place.