Landscape Architects Washington
Landscape Architects Washington Land Developers, Civil Engineers, and Architects Rely On
As landscape architects, Washington land developers, civil engineers, architects, and design-build contractors rely on Evergreen Design Group for construction-ready site design across the entire state. Headquartered in Bluffton, South Carolina, and licensed in 43 states, we have delivered land planning, planting design, hardscape design, and irrigation design on residential communities, mixed-use developments, commercial projects, and industrial sites since 2005 — from the Puget Sound region to Eastern Washington’s high desert.
Our clients are project teams — not homeowners. We are structured to coordinate within your development workflow, meet submittal deadlines, and produce construction-ready documents that move through Washington’s demanding plan review and permitting environment without delays.
Washington is among the most complex states in which we practice. The regulatory environment — layered across Washington State Department of Ecology, the Growth Management Act, SEPA environmental review, the Shoreline Management Act, dual regional stormwater manuals, and county and municipal critical areas ordinances — creates a permitting landscape that rewards landscape architects with genuine local expertise and penalizes those who treat the state as a generic Pacific Northwest market. Add to that the stark division between Western Washington’s maritime and rainfall-driven design environment and Eastern Washington’s semi-arid irrigation-dependent landscape, and you have a state that demands differentiated expertise across its geography.
What Landscape Architects Need to Know About Designing in Washington
Washington State Department of Ecology: Dual Stormwater Manuals
Washington State Department of Ecology administers two distinct stormwater management manuals — one for Western Washington and one for Eastern Washington — reflecting the fundamentally different precipitation, hydrology, and soil conditions across the Cascades. Both manuals are periodically updated, and the 2019 Western Washington Stormwater Management Manual represents a significant evolution in required low-impact development (LID) practices and runoff volume reduction requirements.
For landscape architects, the Western Washington manual governs the majority of the state's highest-volume development markets — King, Snohomish, Pierce, Clark, and Thurston counties. It requires vegetated stormwater management facilities: bioretention cells, rain gardens, vegetated filter strips, and permeable pavement systems with engineered soil media specifications. Landscape architects are directly responsible for the design, sizing, and planting of these facilities, and for producing documentation that satisfies Ecology's plan review standards and the applicable municipal stormwater program.
The Eastern Washington manual applies to development east of the Cascades — Spokane, Yakima, Tri-Cities, and the surrounding counties — where lower annual precipitation, faster-draining soils, and different runoff characteristics produce different design requirements. Our team is experienced with both manuals and designs stormwater management facilities to the applicable regional standard for each project location.
SEPA: State Environmental Policy Act Review
Washington's State Environmental Policy Act (SEPA) requires environmental review for most development projects above established thresholds. SEPA review assesses potential impacts on the environment — including vegetation, wildlife habitat, stormwater runoff, and visual character — and can require mitigation measures that directly affect landscape design scope. Many cities and counties have adopted SEPA categorical exemptions for smaller projects, but larger residential communities, commercial developments, and industrial projects typically undergo SEPA checklist or environmental impact statement (EIS) review.
Landscape architects in Washington frequently contribute to the vegetation, stormwater, and visual impact sections of SEPA checklists and EIS documents, and design mitigation measures — buffer planting, habitat restoration, visual screening, stormwater treatment — in direct response to SEPA conditions of approval. Understanding how SEPA review intersects with landscape scope is a baseline competency for landscape architects practicing in Washington.
Growth Management Act and Critical Areas Ordinances
Washington's Growth Management Act (GMA) requires all counties and cities planning under the Act to adopt critical areas ordinances (CAOs) protecting wetlands, fish and wildlife habitat conservation areas, frequently flooded areas, geologically hazardous areas, and aquifer recharge areas. Critical areas designations and the associated buffer requirements, mitigation ratios, and development restrictions vary materially by jurisdiction — what King County requires differs from Snohomish County, which differs from Clark County.
Critical areas buffers — particularly wetland and salmon habitat buffers — frequently intersect with the buildable area of development sites and constrain where landscape features, stormwater facilities, grading, and infrastructure can be placed. Landscape architects who understand the applicable CAO requirements are essential members of the development team on sites with critical areas present. We have experience working on sites with wetland, stream, and habitat buffers under multiple county CAO frameworks and coordinate directly with the civil engineer and environmental consultant when critical areas are a project constraint.
Shoreline Management Act and Shoreline Master Programs
Washington's Shoreline Management Act (SMA) regulates development within 200 feet of the ordinary high water mark of marine waters, lakes over 20 acres, streams with significant flow, and their associated wetlands. Each county and city with regulated shorelines administers its own Shoreline Master Program (SMP), which establishes allowed uses, setbacks, vegetation buffers, and restoration requirements within the shoreline jurisdiction.
Development in shoreline jurisdiction — common in the Puget Sound basin, along the Columbia and Yakima rivers, and on the state's extensive lakefront development markets — requires landscape architects to design within applicable SMP vegetation buffers, specify native riparian plant species appropriate to the shoreline environment, and in many cases design shoreline restoration as a condition of development approval. We design within shoreline jurisdiction with an understanding of the applicable SMP requirements and the restoration standards administered by the reviewing jurisdiction.
Puget Sound Nearshore Habitat and Salmon Recovery Requirements
The Puget Sound basin is subject to an overlay of salmon recovery planning, nearshore habitat protection requirements, and Puget Sound Partnership goals that affect development projects in King, Snohomish, Pierce, Kitsap, Mason, Thurston, and Island counties. Projects near salmon-bearing streams, nearshore marine environments, and wetlands connected to Puget Sound are subject to enhanced review under applicable county CAOs, the SMA, and in some cases the federal Endangered Species Act through National Marine Fisheries Service (NMFS) consultation.
Landscape architects play a direct role in salmon recovery compliance by designing riparian buffer planting that meets the applicable CAO and salmon recovery buffer standards, selecting native species appropriate to the site's riparian or nearshore context, and coordinating with environmental consultants and civil engineers on grading, drainage, and stormwater management in proximity to regulated water bodies. This work requires familiarity with the Puget Sound nearshore environment and the regulatory framework governing it.
Western Washington Climate: Rain, Drainage, and Erosion
Western Washington's maritime climate — characterized by mild temperatures, high annual rainfall (30 to 140 inches depending on location), extended overcast periods, and significant seasonal storm events — creates distinct design conditions for landscape architects. Planting design must account for species that tolerate prolonged soil saturation in winter and moderate summer drought stress; erosion control is a critical design element on any graded slope; and drainage design must manage high rainfall volumes without overloading stormwater facilities or creating chronic wet conditions that compromise landscape performance.
The region's clay-rich soils — glacially deposited in most lowland areas of the Puget Sound basin — have low permeability that complicates infiltration-based stormwater management and creates seasonal perched water table conditions that affect plant establishment and root zone performance. Our landscape architects design planting, grading, and stormwater systems with these soil and hydrology conditions explicitly in view.
Eastern Washington: Arid Climate, Irrigation Dependency, and Wildfire Context
East of the Cascades, Washington's landscape transitions to semi-arid high desert and shrub-steppe — a design environment that is closer to Idaho or eastern Oregon than to the Puget Sound basin. Annual precipitation in Spokane, Yakima, the Tri-Cities, and the Columbia Basin averages 6 to 16 inches, making landscape irrigation essential for virtually all planted areas that are not native dry-land species. Wildfire risk is significant and growing across Central and Eastern Washington, and defensible space design, fire-resistant plant selection, and access path planning are considerations on development sites in the Wildland-Urban Interface.
Irrigation design in Eastern Washington must account for the availability and cost of irrigation water sources — municipal culinary water, irrigation district delivery systems, and in some rural contexts on-site wells — and be sized for the actual evapotranspiration demand of Eastern Washington's hot, dry summers. Plant palette selection in this environment emphasizes drought-tolerant natives and adapted species rather than the lush planting typical of Western Washington projects.
Washington State's Active Development Markets by County
Washington's development activity is concentrated in several distinct regional markets, each with its own regulatory framework and design environment:
- King County (Seattle, Bellevue, Redmond, Renton, Kent, Auburn): The state's most active and complex development market. King County administers one of the most detailed CAOs in the state, and the City of Seattle maintains its own stormwater manual, tree ordinance, and design review processes. Mixed-use, multifamily, transit-oriented, and commercial development dominate.
- Snohomish County (Everett, Lynnwood, Bothell, Marysville, Monroe): Rapidly growing residential and commercial markets north of Seattle. Snohomish County's CAO and municipal stormwater programs are distinct from King County's, and growth in cities like Marysville and Monroe is producing active master-planned community and subdivision development.
- Pierce County (Tacoma, Lakewood, Puyallup, Bonney Lake, Sumner): Active residential, commercial, and industrial development in the south Puget Sound. Pierce County administers its own CAO and is served by multiple stormwater jurisdictions.
- Clark County (Vancouver and suburbs): Southwest Washington's most active development market, driven by proximity to Portland, Oregon and significantly lower Washington State income tax burden attracting Oregon residents. Clark County and its municipalities administer CAOs and stormwater programs aligned with the Western Washington stormwater manual.
- Thurston County (Olympia, Lacey, Tumwater): The state capital region with active residential and commercial development. Proximate to Puget Sound and characterized by significant wetland and habitat critical areas coverage.
- Spokane County (Spokane, Spokane Valley, Liberty Lake, Airway Heights): Eastern Washington's primary development market. Eastern Washington stormwater manual, distinct CAO framework, and a semi-arid design environment differentiated entirely from western markets.
- Yakima County (Yakima, Selah, Union Gap) and Benton/Franklin Counties (Tri-Cities: Kennewick, Richland, Pasco): Active Eastern Washington residential and commercial development markets with irrigation-dependent landscape design requirements and Eastern Washington stormwater manual jurisdiction.
Landscape Architecture Services We Deliver in Washington
Every service is performed in-house by our licensed professionals with no subcontracting of scope.
Our land planning service supports developers and civil engineers at the pre-application and schematic design stage — establishing open space frameworks, critical areas buffer configurations, stormwater facility siting, tree preservation areas, amenity placement, and land use transitions before the civil plan is locked. In Washington’s regulatory environment, where critical areas, shoreline buffers, and stormwater facility requirements frequently constrain the buildable area of development sites, early landscape architecture engagement is not optional — it is a prerequisite for efficient entitlement.
We are experienced designing within the critical areas and shoreline constraints imposed by King, Snohomish, Pierce, Clark, and Thurston county CAOs on the west side, and within the distinct frameworks of Spokane and Yakima county CAOs on the east side. We coordinate with your environmental consultant and civil engineer on critical areas delineations, buffer configurations, and stormwater facility locations from the beginning of the project.
Washington’s two design environments — Western Washington’s maritime climate and Eastern Washington’s semi-arid high desert — require fundamentally different approaches to plant selection, specification, and establishment. In Western Washington, planting design emphasizes species tolerant of saturated winter soils, moderate summer drought stress, and extended low-light periods; native Puget Sound basin species are frequently required or strongly preferred by municipal landscape ordinances and critical areas mitigation requirements. In Eastern Washington, the plant palette shifts to drought-tolerant natives and adapted dryland species capable of surviving hot, dry summers with minimal irrigation after establishment.
For projects in shoreline jurisdiction, riparian buffer areas, wetland buffers, and salmon habitat buffer zones, planting design must meet the native species requirements and density standards specified in the applicable SMP, CAO, or mitigation plan. We produce planting plans documented to the level required for Washington’s plan review environment — including the species, container size, spacing, and installation methodology specifications that reviewing agencies require.
Tree preservation and replacement requirements in Washington vary significantly by jurisdiction. The City of Seattle administers one of the most comprehensive urban tree ordinances in the state — requiring tree surveys, protection plans, and replacement documentation on virtually all development and major renovation projects, with a replacement ratio structure that has been updated in recent years to require in-kind replacement of significant trees. Bellevue, Kirkland, Redmond, and other Eastside cities administer their own tree ordinances with distinct requirements. In unincorporated areas, county critical areas ordinances often address tree retention in wildlife habitat conservation areas and steep slope hazard areas.
Our tree disposition plans are produced to meet the requirements of the applicable reviewing jurisdiction — calibrated to the specific ordinance in force, not a generic statewide template. For Seattle projects, we are familiar with the Seattle Tree Protection Ordinance requirements and the documentation standards expected by the Seattle Department of Construction and Inspections.
Washington’s residential development markets — from master-planned communities in Pierce and Snohomish counties to urban multifamily in Seattle and the Eastside cities to suburban subdivision development in Clark County and Spokane — each have distinct amenity quality expectations and regulatory contexts. We design amenity packages — pools, clubhouses, fitness areas, dog parks, multi-use lawns, trail connections, and pocket parks — that are market-responsive, code-compliant, and built around the operational realities of HOA and property management. For urban and multifamily projects, we design courtyard environments, rooftop amenity decks, and constrained urban open spaces appropriate to the project density and site conditions.
Western Washington’s hardscape design environment is defined by high annual rainfall, clay-heavy glacial soils with poor drainage, freeze-thaw cycling in higher elevations and eastern Puget Sound communities, and the structural demands of high-pedestrian-traffic urban, mixed-use, and transit-adjacent development. Eastern Washington’s hardscape environment involves significant temperature extremes — hot summers, cold winters with hard freezes — fast-draining volcanic soils, and the UV exposure and wind conditions of the high plateau.
We produce fully documented hardscape construction drawings for both environments: paving materials and finish specifications selected for the applicable climate conditions, joint design, grading and drainage coordination, edge restraint and retaining wall details, and structural pavement section specifications appropriate to vehicle and pedestrian loading. For projects with structured parking lids, plaza deck applications, or rooftop amenity environments — common in Seattle and the denser Eastside markets — we produce hardscape designs that account for waterproofing membrane protection, drainage board systems, and structural load constraints.
Washington’s irrigation design requirements divide sharply along the Cascades. In Western Washington, landscape irrigation is supplemental — the maritime climate delivers adequate rainfall for most of the year, but the July-September dry season creates establishment and maintenance irrigation requirements for commercial, multifamily, and community development projects. Irrigation systems in Western Washington must comply with applicable municipal water conservation requirements and backflow prevention ordinances, and be engineered for the region’s soft water quality conditions.
In Eastern Washington, irrigation is essential and year-round for virtually all landscape areas not comprised of native dryland species. Irrigation water sources vary by location — municipal culinary systems, irrigation district delivery in agricultural communities, and on-site wells in rural development contexts. We design irrigation systems calibrated to the actual evapotranspiration demand of the Eastern Washington climate, specified to the applicable water source and pressure parameters, and documented for competitive contractor bidding and long-term maintenance.
Washington Projects We Support
Residential Land Development
Master-planned communities, single-family subdivisions, townhome communities, and mixed-density residential development across Washington's active growth markets — Snohomish County, Pierce County, Clark County, Thurston County, Spokane County, and the suburban fringes of the Eastside cities. We provide land planning, amenity design, planting plans, tree disposition plans, and irrigation design — coordinating with the civil engineer from the pre-application phase through final construction documents.
Multifamily and Transit-Oriented Development
Seattle and the Eastside cities have some of the most active multifamily and TOD development pipelines in the country, driven by population growth, transit investment, and upzoning in station area planning zones. These projects require landscape architects experienced in urban site conditions, constrained soil volumes, structured parking lids, plaza deck environments, Seattle's green factor scoring system, and the design review processes administered by Seattle's Department of Construction and Inspections, the Seattle Design Review Board, and Eastside city planning departments.
Commercial and Mixed-Use Development
Retail centers, office campuses, medical facilities, mixed-use developments, and hospitality projects across Washington's commercial markets. We produce landscape plans that satisfy applicable landscape ordinance requirements, comply with the applicable regional stormwater manual, meet critical areas buffer standards where present, and create environments that support the commercial performance of the project.
Industrial and Logistics Development
Industrial and logistics development is active across multiple Washington markets — the Kent and Auburn valleys in King County, the Sumner-Pacific industrial corridor in Pierce County, the Spokane Valley in Eastern Washington, and the Columbia Basin port and logistics markets in Benton and Franklin counties. We design landscape plans appropriate to large-footprint industrial sites — perimeter planting, parking lot landscape, stormwater green infrastructure, and low-maintenance vegetation for large disturbed areas — documented to the standard required for site plan approval and competitive contractor bidding.
Civic, Institutional, and Campus Development
Washington's large public sector, its major research universities (University of Washington, Washington State University, and their branch campuses), healthcare systems, and tribal development programs generate significant demand for landscape architects experienced in institutional campus design. We serve civic and institutional clients with the same documentation standards and coordination practices we bring to private development — producing construction-ready drawings, coordinating with civil and architectural teams, and navigating the additional review layers that public and institutional projects often involve.
Why Washington Project Teams Work with Evergreen Design Group
Fluent in Washington’s Layered Regulatory Environment
SEPA, GMA critical areas ordinances, the Shoreline Management Act, dual regional stormwater manuals, Puget Sound salmon recovery requirements, and the urban tree ordinances of Seattle and the Eastside cities — this is the working regulatory framework for landscape architecture practice in Washington. We design within it competently, which means fewer plan review corrections, shorter entitlement timelines, and less regulatory risk on your project.
West-Side and East-Side Expertise — Two Distinct Design Environments
Western Washington’s maritime, rainfall-driven design environment and Eastern Washington’s semi-arid, irrigation-dependent landscape are not variations on a theme — they are fundamentally different design contexts requiring different plant palettes, irrigation approaches, drainage strategies, and hardscape specifications. We practice in both and design to the conditions of the specific project location, not a generic Pacific Northwest template.
Critical Areas and Shoreline Experience
Sites with wetland buffers, salmon habitat conservation areas, shoreline jurisdiction, and steep slope hazard areas are common in Washington’s development landscape. We have experience designing within these constraints, coordinating with environmental consultants on buffer configurations and mitigation planting, and producing documentation that satisfies the applicable CAO, SMP, and SEPA conditions of approval.
Single-Source Landscape Scope Management
Land planning, planting, hardscape, tree disposition, irrigation, stormwater green infrastructure, and community amenity design — managed by one firm, coordinated internally, and delivered as a unified set of construction documents. One firm means one point of contact, less coordination overhead on your civil engineer, and a more coherent set of documents going into plan review.
Licensed, Experienced, and Accountable
Evergreen Design Group’s landscape architects in Washington hold an active Washington State landscape architect license. Every project is managed by or under the direct supervision of a licensed landscape architect. Headquartered in Bluffton, South Carolina, and operating with a distributed team across the country, we have delivered projects in 43+ licensed states since 2005, with Washington among our active markets on both sides of the Cascades.
Frequently Asked Questions — Landscape Architects Washington
Does Washington have different stormwater requirements for landscape design in Western vs. Eastern Washington?
Yes — significantly so. Washington State Department of Ecology administers two separate stormwater management manuals: the Western Washington Stormwater Management Manual and the Eastern Washington Stormwater Management Manual. The Western Washington manual governs the Puget Sound basin and southwest Washington counties west of the Cascades, and it is more prescriptive in its low-impact development (LID) requirements — requiring vegetated bioretention facilities, rain gardens, and permeable pavement with engineered soil media specifications on qualifying development projects. The Eastern Washington manual applies east of the Cascades and reflects different precipitation patterns, soil conditions, and runoff characteristics. Landscape architects are directly responsible for the design and documentation of vegetated stormwater management facilities under both manuals. Our team is experienced with both and designs to the applicable regional manual for each project location.
What is SEPA and how does it affect landscape design on Washington development projects?
SEPA — Washington’s State Environmental Policy Act — requires environmental review for most development projects above established thresholds. SEPA review assesses potential impacts on vegetation, wildlife habitat, stormwater runoff, visual character, and other environmental factors, and can result in conditions of approval that directly affect landscape scope — requiring buffer planting, habitat restoration, visual screening, or stormwater mitigation measures. Landscape architects frequently contribute to the vegetation and stormwater sections of SEPA checklists and environmental impact statements, and design mitigation measures in response to SEPA conditions. Understanding how SEPA review intersects with landscape architecture scope is a baseline competency for Washington practice. We are experienced in both the documentation requirements and the mitigation design work that SEPA review generates.
How do critical areas ordinances affect landscape architecture on Washington development sites?
Washington’s Growth Management Act requires all GMA-planning jurisdictions to adopt critical areas ordinances (CAOs) protecting wetlands, fish and wildlife habitat, frequently flooded areas, geologically hazardous areas, and aquifer recharge areas. CAOs establish buffer widths around regulated features, mitigation ratios for unavoidable impacts, and native planting requirements within buffer zones. Buffer configurations frequently constrain where landscape features, stormwater facilities, grading, and structures can be placed on a site. CAO requirements vary materially by county and city — King County’s CAO differs from Snohomish County’s, which differs from Clark County’s. Landscape architects working in Washington must be familiar with the specific CAO requirements of the applicable jurisdiction and design within those constraints. We are experienced under multiple county and city CAO frameworks and coordinate with your environmental consultant and civil engineer on critical areas compliance from the earliest project phases.
What does the Shoreline Management Act mean for landscape design on Washington projects?
Washington’s Shoreline Management Act regulates development within 200 feet of the ordinary high water mark of marine waters, large lakes, significant streams, and associated wetlands. Each jurisdiction with regulated shorelines administers a Shoreline Master Program (SMP) establishing setbacks, vegetation buffer requirements, permitted uses, and restoration obligations. Landscape architects working on shoreline-adjacent projects must design within the applicable SMP vegetation buffer, specify native riparian or nearshore species appropriate to the shoreline environment, and in many cases prepare restoration planting plans as a condition of substantial development permit approval. We are familiar with the SMP framework and the native planting requirements of Washington’s shoreline environments.
Do you work on projects in Eastern Washington — Spokane, Yakima, and the Tri-Cities?
Yes. Eastern Washington is a distinct design environment from the Puget Sound basin — semi-arid, irrigation-dependent, governed by the Eastern Washington stormwater manual, and subject to its own county CAO frameworks. We serve clients in Spokane County, Yakima County, Benton and Franklin counties (Tri-Cities), and the surrounding Eastern Washington markets. Our irrigation designs for Eastern Washington projects are calibrated to the actual evapotranspiration demand of the region’s hot, dry summers and to the specific water source parameters — municipal culinary systems, irrigation district delivery, or on-site wells — applicable to each project site. Our planting designs for Eastern Washington emphasize drought-tolerant natives and adapted dryland species appropriate to the shrub-steppe environment.
Are you familiar with Seattle's Green Factor scoring requirement?
Yes. Seattle’s Green Factor is a landscape performance scoring tool applied to multifamily, commercial, and mixed-use development projects in Seattle as a condition of the city’s Land Use Code. It assigns point values to different landscape elements — tree canopy, planting area, green roofs, permeable paving, vegetated walls, and others — and requires projects to achieve a minimum score that varies by zone and project type. The Green Factor is reviewed as part of Seattle’s standard permit review process. Our landscape architects are familiar with Seattle’s Green Factor scoring system and design landscape plans with an eye toward meeting the applicable minimum score efficiently — balancing the point value of different landscape elements against project cost, maintenance, and design intent.
What tree protection requirements apply to development projects in Seattle?
Seattle’s Tree Protection Ordinance requires tree surveys, protection plans, and replacement documentation on development and major renovation projects within city limits. The ordinance classifies trees by size and designates ‘exceptional trees’ that receive heightened protection. Replacement ratios are established for trees that must be removed, and in-kind replacement of significant trees is required under the ordinance’s current framework. Seattle’s Urban Forestry program and the Seattle Department of Construction and Inspections administer tree permit review as part of the standard building permit process. Our tree disposition plans for Seattle projects are prepared to meet the current ordinance requirements and submitted-ready for SDCI review.
How do you approach bioretention and rain garden design under Washington's Western stormwater manual?
Washington’s 2019 Western Washington Stormwater Management Manual prescribes specific design standards for bioretention facilities and rain gardens, including soil media specifications, surface ponding depths, underdrain requirements, overflow structure design, and minimum setbacks from buildings and utilities. Planting within bioretention facilities must be selected for tolerance of periodic inundation and extended soil saturation — conditions that exclude many standard landscape species and require a palette of wetland-adapted or water-tolerant natives and adapted plants. We design bioretention facilities and rain gardens to the Western Washington manual’s standards, coordinate sizing with the civil engineer’s drainage calculations, and produce planting plans that meet both the stormwater performance requirements and the visual character expectations of the project. Our documentation is produced to a level that satisfies the applicable municipal stormwater program review.
Do you coordinate with civil engineers on SEPA, critical areas, and stormwater documentation?
Yes — direct coordination with the civil engineering team is standard practice on every Washington project, and is especially critical on projects with SEPA review, critical areas, and stormwater facility requirements. We share drawings, align on critical areas buffer configurations and stormwater facility geometry, coordinate on grading and drainage near regulated water bodies, and flag conflicts between civil and landscape scope before submitting to the reviewing jurisdiction. On projects with SEPA conditions of approval that affect landscape scope, we contribute the landscape and vegetation elements of the required mitigation documentation. Our goal is a coordinated set of documents that satisfies all applicable review requirements on the first submission.
How do we get started on a Washington project?
Contact us through our website or call our office directly. We will schedule a brief discovery call to understand your project type, location, regulatory context, and schedule, then follow up with a proposal. Evergreen Design Group is headquartered in Bluffton, South Carolina, licensed in 43 states, and structured to engage directly within your project delivery process — serving developers, civil engineering firms, architects of record, and design-build contractors at the pace Washington’s active development markets require.
Does Evergreen Design Group provide landscape architecture services for Washington State Department of Transportation and public right-of-way projects?
Yes. We provide landscape architecture services for civic, institutional, and public-sector projects in Washington, including right-of-way and corridor landscape scope coordinated with WSDOT and municipal public works standards. This work follows the same documentation and coordination practices we bring to private development — construction-ready drawings, direct coordination with the civil engineering team, and compliance with the applicable regional stormwater manual and agency design standards. Public-sector and right-of-way projects often carry additional review layers, and we scope accordingly from the pre-application phase forward.
Is your Washington landscape architect license held directly, and do you subcontract any portion of design work?
Evergreen Design Group holds an active Washington State landscape architect license, and every project is managed by or under the direct supervision of a licensed landscape architect on our team. Land planning, planting design, hardscape design, tree disposition plans, irrigation design, and stormwater green infrastructure coordination are all performed in-house — no portion of design scope is subcontracted to third parties. This single-source structure gives your project one point of contact and one coordinated set of construction documents, rather than multiple vendors producing disconnected deliverables.
Start Your Washington Project with Evergreen Design Group
Whether your project is a master-planned residential community in Pierce County, a transit-oriented mixed-use development in Seattle, a commercial campus on the Eastside, an industrial site in the Kent Valley, or a residential subdivision in Spokane or Clark County — Evergreen Design Group brings the regulatory expertise, technical depth, and construction documentation standards that Washington’s development environment demands.
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