Landscape Architect in Washington

 Experienced Landscape Architects in Washington State

Washington’s diverse environment adds complexity to landscape design. The west side features lush rainforests, a rugged coastline, and heavy rainfall, while the east transitions to dry, semi-arid landscapes. 

The Cascade Range cuts through the middle, introducing dramatic elevation changes and shifting soil conditions across the state. These varied conditions, active volcanoes, seismic risks, strict environmental regulations, and stormwater requirements require local expertise and technical know-how.

Evergreen Design Group delivers on both. As one of Washington’s leading landscape architecture firms, we bring more than two decades of experience in the state. 

Our local team of land planners, irrigation designers, and landscape architects in Washington is equipped to handle complex sites, tight regulations, and program-level design needs across industries.

Washington State’s Unique Landscaping Architecture Challenges

Designing outdoor spaces in Washington takes technical knowledge and an understanding of the local environment. Every landscape plan in Washington must account for the following factors and challenges:

• Wide climate variation. Western Washington receives heavy rainfall, especially near the coast and in forested areas, which leads to erosion, moss buildup, and drainage issues. Eastern Washington faces dry summers, drought conditions, and limited water resources for irrigation.

• Seismic risk. Washington is located in the Cascadia Subduction Zone, which means all designs must consider the impact of potential earthquakes. This includes using flexible materials, reinforced retaining structures, and strategic site layouts.

• Volcanic soils and erosion. The western side of the state features clay-heavy soils with poor drainage. The soil is fast-draining around Mt. Rainier and other active volcanoes but is prone to erosion due to its volcanic ash content.

• Strict environmental regulations. Washington enforces some of the toughest environmental laws in the U.S. Examples include the Shoreline Management Act, which limits development within 200 feet of shorelines, and the Growth Management Act, which requires protections near wetlands, floodplains, and wildlife zones.

• Stormwater control. The state issues two stormwater management manuals, one for Western Washington and one for Eastern Washington. Site plans must comply with the correct regional manual, often requiring custom drainage strategies and specialized erosion controls.

• Wildfire exposure. Wildfires are a growing concern in Central and Eastern Washington. Landscape designs must include fire-resistant plantings, defensible space layouts, and access paths for fire response when required.

Why Choose Evergreen Design Group for Your Washington Project

Partnering with Evergreen Design Group means working with a team that understands every aspect of your project. From day one, we look beyond aesthetics to address all regulatory, environmental, and practical design requirements. 

Here’s why you should consider us:

• Code compliance. Our team knows Washington’s zoning codes, development standards, and environmental guidelines. We design with these in mind, avoiding costly revisions or delays.

• We build around your vision. You know what you want; our role is to make it happen. We’ll guide you through your site’s legal and environmental constraints.

• Cross-industry experience. Our Washington landscape architects have worked on retail centers, multi-family communities, civic projects, healthcare campuses, and industrial parks. We bring this experience to every new project.

• Full in-house team. Our firm includes more than 15 professionals—land planners, landscape architects, and irrigation designers—who work together to deliver coordinated, cost-effective plans. You don’t need to find extra consultants to fill gaps.

Services Offered by Our Washington Landscape Architects

Our Washington office provides a full range of services to support your development from the planning stage through final permitting. Each design is customized to your location, needs, and goals.

• Land planning. Our land planners design functional layouts that include circulation patterns, landscape buffers, usable green space, and appropriate transitions between zones. These plans form the base for successful site development.

• Irrigation designs. Water is either abundant or scarce, depending on your location in the state. Our irrigation designers plan efficient systems that meet local codes, conserve water, and ensure plant health year-round.

• Tree disposition plans. We conduct on-site tree surveys and prepare detailed tree disposition plans. These show tree preservation zones, protection measures, and mitigation for any removals, per municipal guidelines.

• Hardscape and community amenities. We create detailed designs for sidewalks, seating areas, plazas, shade structures, and other shared-use features. All materials are selected to suit the site’s conditions and long-term maintenance needs.

• Planting designs. Our team can develop plant palettes that match Washington’s varied climate zones, support native ecosystems, and meet city landscape codes. Our planting designs consider seasonal interest, maintenance, and water usage.

Evergreen Design Group, Your Landscape Architecture Firm in Washington

At Evergreen Design Group, our experienced team brings your vision to life anywhere in the Evergreen State. Our Washington landscape architects have a track record of successful projects across more than 40 states. We collaborate closely with your team, navigate local regulations, and keep your project on schedule.

From urban redevelopment in Seattle to residential master plans in Spokane or Yakima, our team brings consistency, clarity, and code-ready documents to every job. Whether you’re building a civic campus or designing a multi-family development, we’ll help you create outdoor spaces that are attractive, functional, and built to last.

Contact Evergreen Design Group to discuss your next project and get started with a reliable, experienced landscape architect in Washington.