Pittsburgh Landscape Architect
Evergreen Design Group
Pittsburgh Landscape Architect Services for Developers and Design Teams
Evergreen Design Group provides licensed landscape architecture, land planning, hardscape design, amenity design, and irrigation services for land developers, civil engineers, architects, and design-build contractors working in Pittsburgh and Allegheny County. We have been delivering technical site design and construction documentation since 2005, and we understand what makes the Pittsburgh development environment distinct — its topography, its stormwater infrastructure legacy, its active urban redevelopment market, and the suburban growth corridors extending through Allegheny and the surrounding counties.
Pittsburgh is not a market where generic landscape architecture practice produces good outcomes. Steep slopes, combined sewer systems, brownfield and greyfield redevelopment conditions, and a municipal review environment that varies significantly between the City of Pittsburgh and Allegheny County’s 130-plus municipalities all require a landscape architect who has thought carefully about what this place demands. That specificity is what Evergreen brings to Pittsburgh project teams.
Pittsburgh Site Conditions That Drive Design Decisions
Pittsburgh’s development environment is shaped by a set of physical and regulatory conditions that have no close parallel in most other markets. A landscape architect who does not account for these conditions from the start of a project will produce work that struggles through review, requires costly redesign, or fails to perform in the field.
Topography and Slope Conditions
Pittsburgh’s landscape is defined by the confluence of three river systems and the steep, irregular topography of the Allegheny Plateau’s dissected edge. Slope conditions that would be exceptional on a flat-terrain site are routine in Pittsburgh — grades exceeding 15 and 25 percent are common on infill and suburban sites alike, and many parcels carry slopes well beyond that. This has direct implications for landscape architecture at every scale: grading design must account for slope stability and erosion control requirements, planting plans must specify species appropriate for steep or constrained rooting conditions, hardscape must integrate retaining structures that are properly detailed and coordinated with geotechnical recommendations, and stormwater management must address concentrated flow from upslope areas. Evergreen approaches Pittsburgh sites with the topographic analysis that slope conditions require — not the flat-site assumptions that produce problems in the field.
Combined Sewer Infrastructure and Stormwater Obligations
Pittsburgh’s older urban neighborhoods and many of its inner-ring suburban municipalities are served by combined sewer systems that carry both sanitary and stormwater flows. ALCOSAN’s long-term control plan and its associated wet weather improvement program impose stormwater management obligations on development projects within the combined sewer service area that go beyond standard post-construction stormwater requirements. Green infrastructure — bioswales, permeable paving, green roofs, tree pits with structural soil systems, and rain gardens — is increasingly required or incentivized within this service area as part of ALCOSAN’s consent agreement compliance strategy. Evergreen coordinates with civil engineers on green infrastructure integration from the start, producing landscape documentation that satisfies both the stormwater function and the design intent simultaneously.
Brownfield and Greyfield Redevelopment Conditions
Pittsburgh’s industrial history and its ongoing economic transformation have produced a significant inventory of brownfield and greyfield sites — former mill sites along the river corridors, retired industrial parcels in neighborhoods like Hazelwood, Lawrenceville, and the Strip District, and underperforming commercial properties in the suburban ring. Redevelopment of these sites presents landscape architecture challenges that greenfield projects do not: soil contamination that constrains plant selection and requires capping or remediation coordination, existing structures and hardscape that shape grading and drainage decisions, and community and municipal expectations about how redevelopment should engage the surrounding neighborhood. Evergreen’s approach to brownfield and greyfield sites begins with existing conditions analysis that accounts for what is actually on the ground, not assumptions carried over from greenfield practice.
City of Pittsburgh and Allegheny County Municipal Review
Development review in the Pittsburgh metro spans two distinct environments. Within the City of Pittsburgh, projects move through the Department of City Planning under the Pittsburgh Zoning Code, which includes specific landscape requirements for different zoning districts, green building standards for larger projects, and urban design review processes for projects in certain corridors and overlay districts. Outside city limits, development review is distributed across Allegheny County’s 130-plus municipalities, each with its own zoning ordinance, subdivision and land development regulations, and landscape standards — with no uniform county-level landscape code to design to. Evergreen builds jurisdiction-specific code compliance into our standard workflow, tracks the applicable requirements for every project, and structures submittals to move through review efficiently rather than cycling through repeated comment rounds.
What We Deliver on Pittsburgh Development Projects
Evergreen carries five integrated service lines on Pittsburgh projects. Most engagements involve several running concurrently as a single coordinated package.
Site organization decisions made before grading begins — open space distribution, circulation hierarchy, buffer placement, phasing logic, and entry design — set the conditions for everything that follows. In Pittsburgh, those decisions are shaped by site-specific variables that demand analysis before any planning work starts: slope stability and grading feasibility on the region’s characteristic hillside topography, stormwater management obligations under Allegheny County Sanitary Authority (ALCOSAN) and municipal MS4 requirements, riparian buffer and floodplain constraints along the region’s river and stream corridors, and zoning ordinance requirements that differ materially between the City of Pittsburgh and each of Allegheny County’s municipalities. Evergreen’s land planning work is grounded in those constraints from the first study. We develop site configurations that perform through review and build without costly redesign.
Our core deliverable on most Pittsburgh projects is a complete, permit-ready landscape package: grading and drainage coordinated with civil, planting plans with species appropriate to Pittsburgh’s humid continental climate and the site’s specific conditions, hardscape design, site amenity layouts, and full construction details. Drawings are CAD-based and coordinated directly with civil and architectural sets to eliminate conflicts before they reach the field. We work across project types — urban infill and redevelopment, master-planned residential communities, multifamily and mixed-use, commercial and corporate campus — and across delivery methods including design-bid-build, design-build, and CM at-risk.
Tree preservation requirements are active on infill, redevelopment, and new development projects across Pittsburgh — particularly in established neighborhoods where mature cottonwood, American elm, Norway maple, and ornamental street trees are present on urban lots. Our tree disposition plans document existing trees by species, caliper, and condition; establish tree protection zones per Pittsburgh requirements; assess preservation feasibility relative to proposed grading and utility layouts; and calculate any replacement obligations in the format required for City plan review submittal.
Pittsburgh’s residential and mixed-use development market — both urban and suburban — increasingly competes on site experience. Evergreen designs amenity environments as integrated components of the site plan: pools and pool decks, clubhouses and surrounding landscape zones, tot lots, dog parks, fitness courts, shade structures, seating areas, and trail connections coordinated with the broader circulation and open space framework from the start. We produce full construction documentation for amenity areas aligned with your project’s architecture, civil infrastructure, and phasing schedule. See our amenity design services page for scope details and project examples.
Pittsburgh’s climate and geology create specific hardscape design requirements. Freeze-thaw cycling is severe by regional standards, base preparation requirements are demanding on the region’s clay and shale soils, and retaining wall and slope stabilization work is a routine component of hardscape scope on Pittsburgh’s characteristic hillside sites. Evergreen produces hardscape documentation — paving systems, retaining walls, seat walls, plazas, entry monuments, pedestrian connections, and site furnishings — that is fully coordinated with grading, drainage, and utility plans and specified for Pittsburgh’s actual site conditions, not a generic Mid-Atlantic standard. See our hardscape design services page for scope details and project examples.
Pittsburgh’s annual precipitation averages around 38 inches, distributed relatively evenly through the year. That baseline does not eliminate the need for designed irrigation systems on development projects — plant establishment periods, summer drought variability, and the irrigation documentation requirements embedded in many municipal landscape ordinances all require a designed, inspectable system. Evergreen provides complete irrigation design services: hydraulic analysis, mainline and lateral sizing, head-to-head coverage layouts, controller programming parameters, and specifications written to support contractor installation and long-term owner operations. See our irrigation design services page for scope details and project examples.
Project Types We Support in Pittsburgh
Urban Infill and Redevelopment
Pittsburgh’s urban neighborhoods — Lawrenceville, the Strip District, East Liberty, Shadyside, South Side, Hazelwood, and the North Shore corridor among others — continue to absorb infill residential, mixed-use, and commercial redevelopment. These projects operate under tight site constraints: small footprints, shared access conditions, existing utility infrastructure, steep adjacent grades, and proximity to established residential uses that create compatibility requirements. Evergreen’s approach to urban infill begins with a thorough existing conditions analysis and treats the surrounding context as a design input, not a complication to work around.
Master-Planned Residential Communities
Pittsburgh’s suburban growth corridors — extending through the North Hills, South Hills, Cranberry Township and Butler County, the Monongahela Valley, and the eastern suburbs into Westmoreland County — continue to generate master-planned residential projects that require landscape architecture at multiple concurrent scales: master plan open space networks and trail connections, phase-level construction packages released on developer schedules, and detail-level standards for lot treatments, entry monuments, and perimeter buffering. Evergreen structures delivery to stay ahead of your construction phasing at all three scales simultaneously.
Multifamily and Mixed-Use Development
Pittsburgh’s urban core and its transit-accessible suburban nodes have seen sustained multifamily and mixed-use investment. These projects require close coordination between landscape architecture, architecture, civil, and MEP — particularly for constrained urban sites where structured parking, limited open space, and street-level activation all compete for the same square footage. Evergreen’s documentation is structured for direct integration with architectural and civil sets, and our specifications are written to CSI MasterFormat for clean incorporation into project manuals.
Commercial and Corporate Campus
Commercial and corporate site development in the Pittsburgh metro — from the suburban office and mixed-use corridors in Cranberry, Robinson Township, and the Parkway West corridor to urban commercial redevelopment — involves parking lot landscape compliance, stormwater feature integration, corporate identity planting, and ADA-compliant pedestrian circulation within the applicable municipal landscape ordinance. Evergreen carries these scopes within our landscape architecture services and coordinates utility and grading interfaces with civil from the start of the design process.
Riverfront and Waterway-Adjacent Development
Pittsburgh’s rivers — the Allegheny, Monongahela, and Ohio — and its extensive tributary network create both opportunity and constraint for waterway-adjacent development. Floodplain management, riparian buffer requirements under Pennsylvania’s Chapter 102 and Clean Streams Law, and the visual and experiential expectations that come with river-facing sites all require landscape architecture that understands the regulatory and design demands of waterway adjacency. Evergreen coordinates with civil and environmental consultants on riverfront projects to ensure that landscape, drainage, and regulatory compliance are addressed as an integrated scope rather than sequentially.
How We Coordinate with Your Pittsburgh Project Team
On Pittsburgh projects, coordination is more demanding than on many other markets — slope conditions create grading interdependencies that require tight alignment between landscape architecture and civil, stormwater obligations create landscape-civil interfaces that need to be resolved early, and the fragmented municipal review environment requires active management to avoid plan check delays. Evergreen’s workflow is structured for all of it.
Our standard coordination protocol on Pittsburgh projects includes:
- Jurisdiction-specific code review for the City of Pittsburgh or applicable Allegheny County municipality before design begins
- Topographic and existing conditions analysis tied to the civil base before site organization decisions are made
- Slope stability and grading feasibility review in coordination with civil and geotechnical before landscape grading is designed
- Green infrastructure and stormwater feature coordination with civil from schematic design through construction documents
- Coordinated CAD file exchange with civil and architectural teams at defined milestone intervals
- Utility and retaining structure conflict review before hardscape and planting plans are finalized
- Submittal packages structured for City of Pittsburgh or municipal review checklists and formats
- Construction administration support to resolve field conditions — particularly on constrained urban or hillside sites — without derailing the schedule
We work as an embedded member of the project team. If your civil lead needs to resolve a slope transition or a stormwater feature interface at the design stage rather than in the field, that coordination happens directly and quickly.
FAQ: Pittsburgh Landscape Architecture for Developers and Design Teams
Is Evergreen Design Group licensed to practice landscape architecture in Pennsylvania?
Yes. Evergreen Design Group holds landscape architecture licensure in multiple states and operates nationally. Our team is qualified to stamp and seal landscape architecture documents for Pittsburgh and statewide Pennsylvania projects. Contact us directly to confirm applicable credentials for your project scope and jurisdiction.
How does Evergreen approach steep-slope sites in Pittsburgh
Slope conditions are a primary site analysis input on Pittsburgh projects, not an afterthought. Before design begins, we review topographic data in coordination with the civil base to understand grading feasibility, identify areas that require retaining structures or slope stabilization, and establish the design parameters that slope conditions impose on planting, hardscape, and drainage. On sites where geotechnical investigation is warranted, we coordinate with the geotechnical consultant so that our hardscape and planting documentation aligns with the recommendations for subgrade preparation, wall design parameters, and vegetation on engineered slopes.
How does Evergreen handle green infrastructure requirements under ALCOSAN’s program?
Green infrastructure features within the ALCOSAN combined sewer service area — bioswales, permeable paving, structural soil tree pits, rain gardens, and green roofs — require design documentation that satisfies both the stormwater function and the landscape design intent. Evergreen produces that documentation in coordination with the civil engineer, so that planting, grading, and drainage within green infrastructure features are specified correctly and satisfy both landscape and civil plan review. We track ALCOSAN and municipal MS4 requirements as they apply to your specific project location.
Can Evergreen handle both brownfield redevelopment conditions and standard greenfield work in Pittsburgh?
Yes. Our Pittsburgh practice spans both project types. On brownfield and greyfield sites, our existing conditions analysis accounts for soil contamination constraints on plant selection, capping requirements that affect grading and drainage design, and the coordination needed with environmental consultants managing remediation. On greenfield suburban sites, our approach applies the standard workflow adapted for Pittsburgh’s slope conditions and municipal review fragmentation. The same team handles both, with the same documentation standards.
How does Evergreen navigate the difference between City of Pittsburgh review and Allegheny County municipal review?
We treat them as distinct review environments, because they are. City of Pittsburgh projects move through the Department of City Planning under the Pittsburgh Zoning Code, with specific landscape requirements by zoning district and urban design review for certain project types. Allegheny County’s municipalities each operate under their own ordinances with no uniform county landscape standard. Every project starts with a jurisdiction-specific code pull. Submittals are structured to the applicable checklist and format, and we coordinate with plan reviewers during preliminary phases to surface comment items before formal submission rather than after.
What does a standard Pittsburgh landscape architecture construction document package include?
A standard CD package includes: existing conditions and demolition plan, grading and drainage plan coordinated with civil, layout and materials plan, planting plan with plant schedule, irrigation plan with hydraulic calculations, retaining wall and slope stabilization details where applicable, site details and specifications, and jurisdiction-specific documentation required for City of Pittsburgh or municipal plan check. On projects with green infrastructure components, the package includes stormwater planting schedules and green infrastructure details coordinated with the civil drainage design. Deliverables are defined explicitly in the proposal based on your project scope.
Does Evergreen work across the full Pittsburgh metro, or only within the city limits?
Evergreen serves the full Pittsburgh metropolitan area — City of Pittsburgh, Allegheny County, and the surrounding counties including Butler, Westmoreland, Washington, and Beaver. Each jurisdiction carries its own review requirements and site conditions. Our Pennsylvania practice is structured to work across all of them. For a broader overview of our statewide Pennsylvania practice, see our Pennsylvania landscape architect page. See our Pennsylvania landscape architect page.
Work With a Pittsburgh Landscape Architect Who Understands This Market
Evergreen Design Group has been supporting development project teams since 2005. Our Pittsburgh landscape architecture practice is built around the conditions that actually govern project outcomes in this market — steep topography, combined sewer infrastructure, brownfield and greyfield redevelopment conditions, and a fragmented municipal review environment that requires active management from the first day of design.
If you have a Pittsburgh project in planning, entitlement, or design development, contact us to discuss scope. We will tell you directly what we can contribute and what engagement looks like for your specific project.
Get in Touch with Us
Ready to move your Salt Lake City project forward? Send us a brief description of your project type, site location, and schedule — and we’ll follow up with a proposal.