Sterling Design Associates

Wayne T. Sterling, PLA, LEED-AP

Owner, Director of Design


Wayne leads Sterling Design Associates with more than 25 years of experience in site development and landscape architecture, with 23 years as the president of the company. His expertise in designing and coordinating commercial retail centers, restaurants, and office/warehouse projects has defined SDA as a leader in commercial and retail development. In addition to the commercial project knowledge, he has urban redevelopment, parks and recreation facilities, and military base campus projects as part of his portfolio. Wayne also manages site design and entitlement processes for projects throughout the Western U.S. He is the recipient of Award of Honor from New Mexico chapter of ASLA for Grandview Park in Gallup, NM. Wayne is a graduate of the University of Arizona, with a Bachelor of Landscape Architecture.

Licensed Landscape Architect in CO, NM, AZ and UT.

National registration with CLARB since 1996.

Jay M. Newell, PE

Vice President, Director of Engineering


Jay’s 28 years of engineering expertise in commercial land development throughout the Rocky Mountain region provides the engineering leadership for Sterling Design Associates. In addition to commercial properties, he also has experience working directly with municipal and federal agencies to achieve quality design for public infrastructure. Client relationships are the backbone of the company’s success, and those clients rely on Jay’s substantial site design experience to navigate reviewing agency requirements and provide a design that works. His involvement with projects ranging from one acre to over 200 acres and his extensive site redevelopment knowledge are an asset for municipal and federal agencies, religious campuses, school districts, corporate clientele, development companies, and architectural firms. Jay has a Bachelor of Science in Civil Engineering and Bachelor of Landscape Architecture from Iowa State University.

Professional Engineer licensed in CO, NM, and UT.

National registration with NCEES.

Jonathan D. Spencer, PLA



With over 25 years of experience in commercial and residential design as well as design/build projects, Jonathan brings a comprehensive skillset to all of the projects he undertakes. His creative and practical approach to site and landscape design projects provide clients with realistic solutions to complex design challenges. His breadth of knowledge and management experience includes work on hospitality, retail, warehouse, medical/professional, urban redevelopment, streetscapes, energy facilities and custom residential projects. In addition, past work on LEED-certified developments gives him a conservation perspective on all of his projects. Jonathan oversees the day-to-day operations of the company. He is a graduate of Cal Poly Pomona with a Bachelor of Science in Landscape Architecture.

Licensed Landscape Architect in CO and CA.

National registration with CLARB since 2006.

Cynthia M. Pedrioli, PLA

Principal, Planning & Entitlements


Cynthia’s 20-plus years of experience in entitlements, site design and analysis of regional systems provides the Sterling Design team with a comprehensive perspective on projects. She has a solid understanding of planning and landscape design for projects of all sizes, from single commercial pad sites to master-planned communities and regional park systems. Her breadth of experience includes work for private and public entities and includes detailed site research, demographic and budget analysis, written and graphic design guidelines, and on-site landscape and water conservation analysis. Cynthia works as a client liaison and project representative to deliver municipal entitlement submittals, meetings with stakeholders and presentations to boards and councils for project approvals. She is a graduate of Colorado State University with a Bachelor of Science in Landscape Architecture.

Licensed Landscape Architect in CO.

Joseph L. Wilson, PLA, ASLA, CID, CLIA, WWLP, QWEL

Principal, Director of Landscape Architecture


Joseph’s over 24 years of project management experience from concept design through construction administration in over 20 states gives him a wealth of perspective on projects of any size from start to finish. His design background includes projects with metro districts, sports facilities, school districts, military bases and commercial development. Additionally, Joseph has a certification with the Irrigation Association as a Certified Irrigation Designer/Auditor (CID/CLIA) and has audited over 100+ installed/existing irrigation systems in over 12 states. Joseph’s projects range from 1/2 acre pocket parks to 100+ acre irrigation master plans. Staying up to date on the latest technologies/techniques in the irrigation industry, and with years of experience in landscape architecture, Joseph has the ability to analyze site design, identify any special landscape and irrigation requirements, and match an efficient water design with a solid site design to meet client needs. Joseph is a graduate of Kansas State University with a Bachelor of Landscape Architecture.

Licensed Landscape Architect in CO, KS, and NE.

Certified Irrigation Designer (CID)

Certified Landscape Irrigation Auditor (CLIA)

Ryan J. Loftus, PE

Principal, Civil Engineer

Ryan is a senior project engineer with 16 years of experience in land development and site design in both Colorado and the Northeastern U.S. His attention to detail and experience in park renovations, drainage solutions, cost projections, and construction drawings provides well-rounded experience for any project. He has a comprehensive understanding of site design and how changes to drainage or slope impact playgrounds, trails, plazas, sidewalks, and other site conditions sites. Leading teams, he works with other site specialists to create solutions that meet the regulatory requirements and the aesthetics the team is trying to achieve. His past experience in septic design, underground detention, specification writing, and Civil 3D design also provides additional areas of expertise to Sterling Design Associates. Ryan is a graduate of the University of Rhode Island with a Bachelor of Science in Civil Engineering.

Professional Engineer licensed in CO and CT.

ACEC Colorado 2020 Young Professional of the Year.

Michael E. Haaf, PLA

Project Landscape Architect

Michael brings over 20 years of design experience in Colorado and Florida to the Sterling Design Associates team. His experience includes planning, landscape design, and irrigation design of sites of all sizes, including cemeteries, streetscapes, parks, sports complexes and residential communities. His expertise with irrigation, landscape and hardscape design, bid processing, cost estimating and contract administration and his attention to detail results in strong design drawings for any projects he undertakes. His interest in plant material and expertise as a certified arborist is also invaluable on projects with existing mature trees. As The Park People’s former “Mile High Tree Champions” Project Coordinator he has worked with the City of Denver Parks Department, corporations and volunteers in community engagement and tree canopy enhancement in the built environment. Michael graduated from the University of Florida with a Bachelor of Landscape Architecture.

Licensed Landscape Architect in CO & FL

Certified Arborist – 2014 ISA RM-7547A

Town of Castle Rock Registered Landscape Professional – 2015 #15-1105

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