The Collaborative Design Group is a multi-disciplinary team of creative and professional planners, architects, engineers, interior designers and sustainability consultants. We integrate function, beauty and budget to enrich our clients, the environment and the community. The Collaborative Design Group is located on the Front Range of the Rocky Mountains in beautiful Colorado Springs, Colorado.

Meet the Design Members

The team is currently a collection of creative and like minded individuals working together to create beautiful spaces.
larry gilland cdg lga

Larry Gilland, Principal, LEED-AP NCBDC | LGA Studios Owner

A respected community leader, Larry Gilland has been a consistent name among designers and architects who design for the top Colorado Springs and national contractors, as well as private custom clients. Owning his own architectural design company for over 28 years, his numerous projects include structures designed for the exclusive Summit County, Beaver Creek and Colorado Springs resort communities, as well as Scottsdale, AZ, Santa Fe, NM, Ambergris Key Belize, and a hospital clinic in Nigeria. His work has been published in several industry publications. His passion for sustainable design has led him to become involved in, and a leader in Green and Sustainable Design.

LGA STUDIOS is an award-winning architectural design firm specializing in custom, luxury, and production home design, commercial architecture, and sustainability. Our team, led by Larry Gilland, is dedicated to excellence in architecture, bringing imagination, innovation, and integrity to every project, and the highest level of service to every client.


Phone: (719)-635-0880


Woodman Valley Redefined

STYLE: Refined Lodge  |  LOCATION: Woodmen Valley, Colorado Springs  |  SQ FT: 5,000+  |  BUILT BY: Goetzmann Homes

With the style and elegance of a European country estate set amidst Rocky Mountain splendor, this home provides luxurious comfort. Timber trusses and soaring ceilings make for a dramatic entry, while wooden shutters and petite balconies give this home its cozy charm.

The hillside lot this home sits on includes a cluster of hoodoos, naturally occurring rock spires sculpted by thousands of years of erosion, and these became a focal point in designing the pool area and outdoor living space. 

Mark Tremmel, Principal, AIA | LEED-AP, TDG Architecture Owner

Mark has over twenty-eight years of experience in providing design excellence in creating beautiful, client driven, award winning sustainable residential and commercial buildings and places. Mark has provided town planning for communities in Ohio and Colorado. He is a frequent speaker in Southern Colorado regarding the balance of sustainability and economic feasibility. 

TDG Architecture (TDG)  was created in early 2008 by the former partner of Colorado Architecture Partnership, Mark Tremmel. TDG works as joint venture partnership to provide superior architectural design and client care services for Colorado Springs and the surrounding region. Trained to the most current digital drawing standards, TDG has the capacity to envision and detail every project to exacting professional standards while conforming to rigorous budgets and schedules.


Phone: (719)-623-5641


The Lowell Neighborhood

The Lowell Neighborhood, is a growing community that resides just south of downtown Colorado Springs. This Colorado Springs community, with purposefully wide sidewalks, slow car speeds, green plazas, and beautifully designed mixed-used buildings is not something you would expect to find in the rapidly expanding city. The 58-acre lot is not only home to Tremmel Design Group, but has over 200 residents and a variety of businesses.

The neighborhood currently includes, Prestwick Village and Commons, a Live/Work lofts, Westwood Townhomes, Wyndam Place, a place for seniors, and the Poet’s Lofts.

John (AIA) Goodloe

Goodloe Architecture Founder

Founded in 2016, Goodloe Architecture LLC provides professional architectural services through John Goodloe, AIA. The firm is deeply committed and grounded in the Colorado Springs community, with most of our work in the Pikes Peak region. We have a broad range of project experience from over 30 years in the architectural profession. The firm’s core work and primary experience is in the education and hospitality world. We work closely with each client to tailor design teams best suited to the project scope and budget. We are comfortable as the team lead or as a participating team member. In any role, Goodloe Architecture will bring a dedication to the client’s needs, budget, and project quality.



Phone: Colorado: 719-351-5704

- Meet Our Resident Artist -

Eric Fetsch |

Watercolor Arist

Over the last several years Eric has been using watercolors to depict the scenes of landscapes and wildlife. Most recently, he has been changing mediums, switching to canvas and adding techniques to capture the textures and light that make Colorado Watercolors unique.

He offers monthly watercolor workshops which you can sign up for on his website. 


Phone: (719) 332-2412