Jimmy Chan
Vice President

Jimmy Chan is passionate about community rooted transformation of public spaces. A design leader and collaborator with technical know-how, Jimmy’s experience spans a broad range of public and private work including urban spaces, parks, healthcare, academic, workplaces, and housing. He has participated on projects of all scales from small interventions to full campus renovations and National Parks, including master plan and design guideline development.

Jimmy enjoys partnering with people: communities, stakeholders, agencies, and design partners in the creation of contextual and meaningful places. He has brought to each of his projects a comprehensive range of skills and abilities including design, project management, construction documentation, and construction administration and support. Jimmy also manages firm operations and serves on the Port of San Francisco’s Mission Rock – Pier 70 Design Advisory Committee.

Projects of note:
BART Transit Operations Facility and Plaza
Oakland Madison Square Park Visioning
San Francisco Salesforce Tower | Transbay Center
San Francisco Hunters Point Shoreline
Kaiser Dublin MOB and Cancer Center
South Lake Tahoe Lakeview Commons Waterfront

Jimmy Chan Vice President
Manuela King

As a Principal in the firm, Manuela King has been instrumental in the design of a wide variety of high-profile projects. These include urban design and planning, park and recreation planning, residential design, and commercial and professional facilities. Her interests include the relationship between art, architecture, landscape architecture and contemporary urban design. She is a strong advocate of sustainable design in all her projects.

Over her time with the firm, her work has expanded to include many international projects, including work in Chile, Taiwan, Malaysia, Israel, Korea, the Philippines, China, Australia and Japan. Manuela currently serves the Union Square Business Improvement District as an Advisory Committee Chair on Streetscapes and Public Realm. She is a LEED AP.

Projects of Note:
San Francisco Chinatown Central Subway
Sonoma Academy
San Francisco Panhandle Playground
San Francisco Union Square 
Half Moon Bay Library
VA Palo Alto Landscape Master Plan

Manuela King President
Nathan Lozier
Vice President

Nathan brings a focus on the integration of ecology and infrastructure with the design of landscapes. Nathan is particularly interested in creating people-friendly spaces that evoke the site’s history and reveal ecology and natural process. He believes in a collaborative approach, seeking creative solutions that realize the opportunities and needs of the site, client, and community. 

Nathan has worked on a variety of projects incuding large scale master planning, streetscapes, storm water management, and civic / academic institutions. He is currently leading the design of a large technology campus. In addition to guiding the firm, Nathan also teaches a professional practice class at UC Berkeley. He is a LEED AP.

Select projects of note: 
San Francisco Hunters Point Shoreline 
San Francisco Candlestick Point and Hunters Point Shipyard Redevelopment
San Francisco Salesforce Tower | Transbay Center
City of Davis Third Street Improvements



Nathan Lozier Vice President
Barbara Lundburg
Vice President

Barbara Lundburg is highly qualified in all aspects of landscape architecture, from large-scale environmental studies to urban design, park master plans and community and campus development. Her design work is typified by intimate detail, powerful contextual linkages, and expert use of specially selected plant materials.

Barbara combines a sense of artistry and appreciation for personal expression, in all its forms, with her passion for gardening. Her work responds to the environment while also being informed by cultural, historical and architectural references. The sensitivity extends to her collaborative approach to design. Barbara is a LEED AP.

Projects of note:
Malibu Legacy park
San Mateo Wastewater Treatment Plant
Stanford Old Winery
Intel Museum
El Cerrito Parks and Recreation Master Plan
VA Riverside Cemetery

Barbara Lundburg Vice President
James Ingels

With education and professional experience in both landscape architecture and construction, James has a broad range of skills for managing projects of varying nature and scale. James has worked on numerous streetscape and urban design projects. His understanding of project design and construction process from inception to completion is a valuable asset to managing a successful project.

James has over twenty-five years of experience, contributing to his expertise in the “buildability” of projects. This knowledge helps James contribute significantly to the design and implementation process.

Projects of note:
Auburn School Park Preserve
Burlingame Avenue
Fresno Fulton Mall Rehabilitation
McKelvey Park

James Ingels Principal
Douglas Nelson
Principal Emeritus

Doug brings leadership experience in parks, urban design, and historic landscapes. His vision and creativity have resulted in significant projects in Yosemite National Park, the Presidio of San Francisco, San Francisco’s Golden Gate Park, and other iconic and sensitive places.

He brings particular expertise in historic landscapes, national park projects, and projects involving extensive community involvement. He develops a collaborative relationship with clients that results in responsive designs. His passions include art, history, and landscapes, which he regularly integrates into his work.

Projects of Note:
Fresno Fulton Mall Rehabilitation
Andy's Unity Park
Yosemite Glacier Point Rehabilitation
Yosemite Curry Village
Village Valley Visitors Center
Golden Gate Park Master Plan

Douglas Nelson Principal Emeritus
Jacob Millard
Senior Associate

Jacob's sensitivity to client needs, user experience, and sustainable solutions equals his passion for contemporary site design and place making. Jacob has focused his education and career on understanding and exploring our relationship with natural and built environments; and his background in design, engineering and construction has given him a strong foundation for working with clients, communities and multi-disciplinary teams to facilitate processes within which design can take place.

At RHAA, Jacob has worked on a diverse range of public & private projects; from master planning and conceptual visioning to a wide variety of constructed projects. His work has included urban plazas, streetscapes, and civic spaces; park and recreation projects; health care facilities and corporate campuses; schools and educational campuses; multi-use developments, commercial retail spaces, and residential design. Jacob is a licensed Landscape Architect.

Projects of note:
Sonoma Academy
Sausalito Dunphy Park
Hayward Library
Contra Costa College
South Lake Tahoe Lakeview Commons
San Francisco Chinatown Central Subway

Jacob Millard Senior Associate
Lauren Ivey-Thomas

Lauren is an urban designer interested in the relationship between landscape design, city planning, and community building. Her passion for design combines a vibrant architectural aesthetic with an interest in creating strong contextual relationships, to create unique and locally relevant spaces. At RHAA, Lauren has managed several Park and Recreation Master Plans for cities in the Bay Area, and previously worked as a Student Recreational Planner for the National Park Service.

She holds a dual master in City Planning and Landscape Architecture from the University of California, Berkeley, where she researched design through community engagement. Outside of the office, Lauren teaches dance at the studio she grew up in: Jazz N Taps rocks!

Lauren Ivey-Thomas Associate
Megan Dale
Senior Associate

Megan is a landscape architect with extensive international and domestic experience. She has managed a range of projects in the fields of urban planning, public parks, waterfront design, high-density housing, urban forestry, trails, cemeteries, public utilities, and community development.

She brings awareness and spirited creativity to projects striving to deliver positive results. Her design approach is to listen to the land and people, then incorporate the unique aspects of each site. Megan has a passion for hiking, nature observation, and mountain biking. She enjoys teaching people to care for the places they cherish for outdoor recreation and to protect the natural environment.

Projects of note:

Berkeley Tuolumne Camp
Southern California Veterans Cemetery
San Mateo Wastewater Treatment Plant
Stanford Old Winery
Presidio Theatre


Megan Dale Senior Associate
Jose Subiabre
Jose Subiabre Designer
Harriet Zhu

Harriet received her Masters of Landscape Architecture from the Rhode Island School of Design. With an interest in ecology and urban systems, she became focused on the interaction between people and ecosystems. A graduate from the China Academy of Art as well, Harriet is exceptional at hand drawings and sketches, and she believes in the importance beautiful and understandable drawings to quickly communicate design and ideas.   

Harriet Zhu Designer
Parabar Weber

Parabar comes to RHAA with a diverse background in Financial Management. He was previously a Systems Manager at Vali Cooper and Associates, a Financial Manager at Stantec, and served as Controller for RHL Design Group, Inc. for nearly 20 years.

In addition to RHAA, Parabar does private consulting for Bay Area law, software and other firms, and is also an accomplished musician, having recorded and toured the USA, Canada and Europe with a number of well-known reggae, jazz, rock, Latin and funk artists. He continues to record and perform throughout the Bay Area on a part-time basis.

Parabar Weber Controller
Tyler Poland
Tyler Poland Designer
Tanvi Shah
Tanvi Shah Designer
John Martin
Senior Associate

John brings a background in Integrative Biology to Landscape Architecture and an interest in urban and cultural landscapes that connect communities to their surroundings. He believes enduring and memorable public spaces emerge from the creative melding of a site’s ecology, its history, and the functional needs of the individuals using it.

He has a particular interest in the experiential qualities thoughtful planting design can elicit. In his free time, John can be found hiking through and photographing California’s diverse native plant communities or taking road trips to mid-century destinations. He is a licensed Landscape Architect, and is Bay Friendly Certified.

Projects of note:
Fresno Fulton Mall Rehabilitation
Burlingame Avenue
Davis Third Street
San Francisco Candlestick Point and Hunters Point Shipyard Redevelopment

John Martin Senior Associate
Quinn Uesugi
Quinn Uesugi Designer
Jules Schaafsma
Marketing Manager | Senior Associate

Jules Schaafsma brings many years of Graphic Design and Marketing experience to RHAA. Jules’ diverse experience set extends beyond Graphic Design. Her years of work in Interior Design/Staging, Real Estate Development, Architecture and Landscape Design lend to her ability to understand both market real estate and the broader design industry. Additionally, Jules has many years of merchandising experience in the Wellness, Spa, Hospitality and Natural/Gourmet Foods industries.

An avid learner, Jules strives to keep abreast of new trends in the marketplace. Her studies include graphic design, green building design, organic locavore agriculture, soil science, surveying & mapping, geology, natural resource management, and wellness/natural health care.  Jules’ wide array of knowledge brings a unique perspective that informs her design ethos and allows her to understand a broad range of industries.

Jules Schaafsma Marketing Manager | Senior Associate
Nathanael Gray

Nathanael believes that each project he designs adds another layer to an already transpiring story. The landscape is complex and nuanced; each place has a unique social and environmental history. To understand this story Nathanael finds inspiration by spending time on the site, in depth site analysis, and dialogue with the community.

Projects he has worked on include public parks, community master plans, school grounds, and urban plazas. In his spare time Nathanael continues to explore the landscape where he lives by hiking, plein air painting, and taking long walks until he is lost, then finding his way back.

Nathanael Gray Associate
Nels Berg
System Administrator/Accounting Assistant

Nels comes from an accounting background with a love of technology and computers. He handles all technological and computing issues for the office as well as supporting the accounting operations of the business by processing merchandise invoices, making payments and resolving queries. In his free time, he enjoys working on his vehicles and spending time with his family.

Nels Berg System Administrator/Accounting Assistant
Kendra Manning

Kendra’s passion lies in working with communities to create meaningful, beautiful spaces responsive to their needs and to the needs of the environment. She has experience managing a wide range of projects across scales including technology campuses, education, public spaces and playgrounds. Kendra’s rapport with clients, communities, consultants, and construction teams makes space for positive, collaborative, and creative engagement throughout the design and construction process.

Her understanding of environmental and social influences complements her sound construction knowledge, resulting in highly successful projects. Kendra believes that each project offers a unique opportunity to positively enhance our world and this concept drives every aspect of her work.

Kendra Manning Associate
Lindsey Yuen

Lindsey is a Landscape Architect whose project experience has focused on local public projects, ranging from large recreational parks, neighborhood parks, and coastal trails. She offers her strong construction document and project coordination experience to the team. Academically trained in the Pacific Northwest, her studies focused on urban ecological design, community building, therapeutic landscapes, design-build, and visual arts.

As a way to continue building upon her interest in community-based work, she recently begun volunteering for a local non-profit that provides design services for local marginalized communities.

Projects of Note:
Hunters Point Shoreline
60 acre technology campus (confidential)
Dublin Downtown Streetscape Plan

Lindsey Yuen Associate
Momo Chen
Momo Chen Designer
Kossen Miller

Kossen Miller is a landscape designer with focused interest in complex cultural landscapes and the evolution of coastal places. He holds a Masters Degree in Landscape Architecture from LSU’s Robert Reich School of Landscape Architecture; and a BA in Leadership Studies from the University of Richmond. A lifelong passion for the ocean and surfing has led to international travel and work experiences that now serve to define and enrich his design endeavors.

Kossen Miller Associate
Kathy Bourdet
Office Manager

Kathy graduated from UC Davis with a degree in Dietetics and Nutrition, and practiced as a Registered Dietitian for many years. It was time for a change, and after working with a career coach, she decided to go back to school and earned two degrees: one in environmental landscaping, and the other in Landscape Architecture.

She is passionate about environmental issues, having been born and raised in California where protection of the environment is a relatively new concept. She is also passionate about developing alternative energy sources, nuclear energy and its waste and what to do about it, and the lack of water in California and the burden of an ever-increasing population.

Kathy Bourdet Office Manager