Images of Nathan Griswold courtesy of Beth Price Photography


Founder and President

Nathan has worked at the forefront of the green roof industry for more than a decade. He has played critical roles in the design, development, sale, construction and successful establishment of nearly 1,000 green roofs across North America. From 2005-2013, he served as the Senior Garden Roof Technical Sales Coordinator for American Hydrotech, one of the world’s largest waterproofing and green roof manufacturers.

Respected for his technical knowledge and hands-on experience, he has proven to be a valuable resource to many design, installation, and owner teams. One of the first individuals to receive Green Roof Professional (GRP) accreditation from Green Roofs for Health Cities (GRHC), Nathan now helps guide and implement the organization’s efforts to advance green roof technology and educate the design community and policymakers on all forms of green infrastructure. He has been an active member of the Green Roof Committee at the American Society for Testing and Materials (ASTM) for more than eight years, helping develop and promote international standards and testing protocols for the industry.

Nathan earned an associate’s degree in plant science from Northwest Michigan College. He holds a bachelor’s degree in landscape architecture, a RISE environmental specialization, and a certificate in landscape and nursery development from Michigan State University.

He launched Inhabitect, LLC to serve as an independent resource for designing, building and growing living architecture that is functional, beautiful and affordable. With his international network of professional colleagues in architecture, landscape architecture, horticulture, engineering, construction and manufacturing, Nathan will bring the right people with the right expertise to every Inhabitect project.

Credentials + Experience + Life

  • Associate Landscape Architect (ASLA)
  • Green Roof Professional (GRP)
  • Knowledgeable Green Roof Expert nearly 1,000 projects across North America
  • Green Roof Advocate and Steward active in the green roof industry for 14 years
  • Co-chair, Advanced Green Roof Maintenance Committee, Green Roofs for Health Cities (GRHC)
  • Member, Growing Medium Committee, GRHC
  • Chair, Green Roof Insurance Committee, GRHC
  • Continuing Education Provider, GRHC
  • North American Policy Educator, GRHC
  • Instructor, Northwest Michigan College and Yestermorrow Design/Build School
  • Mentorseeks out opportunities to educate about green infrastructure
  • Member, Green Roof Committee (E60 and D08), American Society for Testing and Materials (ASTM)
  • Recipient of the 2016 Environmentalist of the Year (Business Category) Award from the Northern Michigan Environmental Action Council (NMEAC)
  • Recipient of the 40 under 40 designation for 2015 (Traverse City Business News)
  • Selected as the one of the People, Places and Products to Watch in 2015 (Traverse City Business News)
  • Green Infrastructure Consultant and Designer
  • Living Architecture Systems and Materials Expert
  • Construction Supervisor, Installer
  • Project Manager, Project Collaborator
  • Team Builder, Team Player
  • Problem Solver, Problem Preventer
  • Outdoor Sports Enthusiast

“I founded Inhabitect to provide streamlined solutions for constructing green infrastructure that meet my clients’ environmental, social and financial goals and ensure that the results are functional, beautiful and affordable.”


Nathan D. Griswold, ASLA, GRP
Founder and President
Inhabitect, LLC

Images of Eric Clone courtesy of Clone Creative

Eric Clone, GRP

Project Manager 

Eric has spent his life pursuing the betterment of the environment through his interactions with the wilderness and a fascination with design and architecture. He studied architecture at Ferris State University and has remained a student of sustainable design through all of his life experiences, his time in the construction field, and as a primitive living techniques instructor. After studying environment science and limnology at Northwestern Michigan College, Eric transferred to Lake Superior State College to continue his education in Natural Resource Management and Parks and Recreation Management. He is a recognized leader in the fields of outdoor education, wilderness rescue medicine, and wilderness therapy. One highlight from these experiences is his experience mentoring and guiding youth from inner cities across the Western United States.

Drawing from a depth of experience, Eric has been involved civically as a volunteer with The Inland Seas Schoolship, various trail building crews as crew leader for The Youth Corps and a professional firefighter, Emergency Medical Technician and rescue professional for over a decade. As a rescue provider he also travels as a wilderness medical skills instructor for Wilderness Medical Associates International, the world leader in teaching medical skills in delayed care settings. He brings an unmatched level of safety to every Inhabitect jobsite.

Eric joined Inhabitect in early 2016 and brings with him a wealth of knowledge, experience and educational diversity. He received his Green Roof Professional (GRP) accreditation from Green Roofs for Healthy Cities (GHRC) in the fall of 2016. His experiences as an educator, homebuilder and living in various wilderness ecosystems offer a unique set of skills, problem solving and creativity. That experience, combined with his GRP make him a valuable member of the Inhabitect team.

After ten years living in Colorado and Utah, Eric returned to his hometown of Traverse City in 2004. He now resides in Cedar, MI with his wife, three wonderful children and his dog Tucker.

“Inhabitect plays an integral role in the implementation of restorative design in architecture and this impacts how the built environment interacts with our surroundings. By utilizing sustainable design concepts we enable previously detrimental footprints to come alive and be reborn into instruments of healing and resilience.”


Eric Clone

Project Manager
Inhabitect, LLC

Dan Nolan

Crew Leader

Dan has spent the better part of the last decade working with plants with a focus on aquaponics and hydroponics. He is a graduate for Traverse City Saint Francis High School and also has his welder certificate from Northwestern Michigan College. Dan also did a three month internship with Friendly Aquaponics, the world’s first certified organic aquaponics facilities, in Hawaii and spent time selling plasma welding and cutting equipment.

His background has provided experience to make him very around a construction site. Dan has spent over four years helping to reconstruct The Village at the Grand Traverse Commons, one of the largest historic preservation and adaptive reuse redevelopments in the country. One of his creations can be admired at the entrance to Trattoria Stella.

Dan is passionate about water resource management and preservation and this is a great fit at Inhabitect, LLC. As a leader in green infrastructure, native plants, clean water and with an overall restorative mindset, Inhabitect, LLC is thrilled to have this future leader on our staff.

“Inhabitect, LLC is a great place to work because it provides me the opportunity to pursue my interests in horticulture, ecological preservation and restoration as well as holistic water management. With a focus on green infrastructure, native landscapes, and sustainable food production this is a place unlike any other. From rain gardens and green roofs to aquaponics we are always involved in projects that strengthen my love for the environment and the Great Lakes Region as a whole.”


Dan Nolan

Crew Leader
Inhabitect, LLC

Cathy Fenlon

Executive Assistant / Office Manager 

Cathy is a life long lover of nature and gardening and has been professionally gardening for over 30 years. She graduated from Northwestern Michigan College with an Associates Degree in Plant Science and Turf Grass Management, as well as Michigan State University with a       2-year Certificate in Landscape and Nursery Care. Cathy began her career as the Master Gardener Coordinator in Leelanau County from 2004 until 2006 where she taught a Landscape Design class for MSU Extension Master Gardener volunteers. She ran her own company, Proscape Design, out of Leelanau County for 17 years before joining Inhabitect in 2018.

Cathy returned to college in 2011 to complete her Bachelor’s Degree in Management and Organizational Development at Spring Arbor University. Since completing the program in 2014, she has put her skills to work to enhance her business management and organizational skills in both her professional and personal life.

Cathy’s background in designing and installing landscape and vegetable gardens, as well as trees and shrubs, and irrigation design, installation and troubleshooting brings another layer of experience to the Inhabitect team. As the Executive Assistant/Office Manager her skill set, experience, and background will increase the productivity and efficiency of this organization.

Cathy has lived in Leelanau County for over 30 years where she raised her three children. She resides in Lake Leelanau with her dog, two cats and many grand pups and of course, her many gardens.

Credentials + Experience + Life

  • Associate Degree in Plant Science and Turf Grass Management-Northwestern Michigan College
  • Landscape And Nursery Care 2-year Certificate from Michigan State University
  • Design Assistant and Garden Maintenance
  • Former Master Gardener Coordinator Leelanau/Grand Traverse/Benzie County
  • Bachelor’s Degree Management/Organizational Development-Spring Arbor University.Current Recertification Program Master Gardener Volunteer
  • 17 years – owner, Proscape Design, Landscape Company – Design, Installation, Maintenance