PLAID is a concept in collaborative professional design services. While each of our PLAID members own and operate their own independent firms, we combine our talents in a collaborative way to provide clients with all their Design/Build services under one umbrella. These services include landscape design, architectural services and interior design, in addition to providing experienced, skilled contractors and builders to bring our design creations to reality, from concept to completion.

PLAID also welcomes clients to bring their own preferred service providers to the table. PLAID will always foster a flexible, creative environment open to the needs and comforts of our clients, and by doing so, we provide complete Design/Build services unmatched by any other firm in the region.


Gretchen Knoblock, CHMS, is an interior designer, specializing in new construction and remodels and kitchen/bath design. She is also a certified home staging specialist.

She has a degree in Interior Design Technology from Purdue University, and also studied design at Ball State University. Prior to receiving her design degree, she spent 17 years in the property management industry.

She is experienced in and comfortable in all styles of design and pays close attention to designing spaces perfectly tailored to the way her client intends to use the space.

She is also active in the Home Builders Association of Grand Traverse Area and Women's Council of Realtors.


who we are


Kristin Trojanowski, RLA, established her landscape architecture firm in 2004 in New York. She is a 1998 graduate of Michigan State University, earning her Bachelors degree in Landscape Architecture.

Kristin believes good design should serve as a visual voice that complements and enhances the land, the architecture and the client's desires. It should be functional AND aesthetically pleasing, thus ensuring a successful project.

Kristin has served a broad range clientele and tastes, guiding them through the creative process with skill, knowledge and a focus on creating a harmonious result.



Colleen P. Shannon is an independent architectural designer. She provides clients with architectural services, graphic and artistic representation, and construction documentation in addition to her superb design skills.

She is an excellent problem solver, has a thorough and varied knowledge of construction processes, technical  requirements and building codes, and prides herself on establishing an easy rapport with her clients and other team members.

Colleen has her Bachelors of Environmental Design from Miami University, Ohio and her Masters of Architecture from University of Pennsylvania.