About 2018-06-27T13:53:40+00:00
A3C Green Wall Logo

Incorporated in Michigan in 1983, A3C is a multi-disciplinary architecture and interior design firm with a focus on sustainable design. Our work groups specialize in corporate, education, healthcare, municipal, and religious projects. The firm’s goal continues to be “partnering with clients to create responsive, sustainable solutions” through our core values of a collaborative approach, a supportive environment, quality work, and environmental stewardship.


At A3C, we specialize in collaborative architecture – meaning we partner with each of our clients to develop designs that reflect their organizations’ unique cultures and missions. With 35 years of experience, we use close communication and an integrative design process to create responsive designs that solve tough problems, fit in tight budgets (and tight spaces), and make environments that really work.

Architecture & Engineering:  From master planning to construction administration we lead our clients through the entire building and/or renovation process. Our services include: Master Planning, Integrated Project Design, AE Design, Interior Design, and Contract Administration.

Interior Design:  We know that the design and feel of an environment can affect learning outcomes, work productivity, employee well-being, customer experience, and patient satisfaction. Our interior experience ranges from hospitals to tech offices, community centers to education facilities, and from worship centers to dentist offices.

Check out our portfolio to see some examples of our previous work.



A3C has been environmentally conscious since our founding. Our early practices included passive/active solar design, earth tempering design, and super insulation. We continually incorporate new technologies and processes into our projects. Two-thirds of our technical staff are LEED-trained and accredited sustainability experts, and we maintain a wealth of sustainable project information and practice sustainability as an extension of good, well-planned design.

Our Sustainable Services Include:

  • Energy Audits

  • Facility Assessments

  • Commissioning

  • LEED Certification

  • Green Globes Certification

  • Living Building Challenge Petal Certification

  • Net Zero Energy Design

  • Green Roofs

  • Geothermal (geoexchange) Systems

  • Solar Energy Systems

  • Stormwater Management

Click on any of the projects below to visit our portfolio and learn about some of our past sustainable projects.

Leadership Team

Dan Jacobs

Senior Principal, Director of Sustainable Design

Dan is one of the two founding partners of A3C which will celebrate its 35th anniversary in August of 2018. He is an advocate of building sustainable projects for the benefit of our clients, our community, and the planet. Dan has served on the Board Executive Committees of both the USGBC Detroit Regional Chapter and the Southeastern Michigan Sustainable Business Forum. He is a huge fan of Michigan sports, regularly attending hockey, basketball, and football games. While his friends might not call him a golfer or a basketball player, he does enjoy playing both sports. He has been married to his college sweetheart, Peg, for 40 years and they have four wonderful children, two daughter-in-laws, and three grandchildren, as well as three grand-dogs.

“I am a great believer in luck and I find the harder I work the more I have of it.” – Thomas Jefferson

“To be successful, you have to have your heart in your business and your business in your heart.” – Thomas Watson, Sr.

Jan Culbertson

Senior Principal

Jan has been with A3C since the early days of working in Dan’s “lower level.” She coordinates the local AIA+2030 professional continuing education series and serves on the Ann Arbor 2030 District: Emerging District Committee. Growing up in Ann Arbor, Jan continues to work and serve in the town she loves through the Main Street Area Business Improvement Zone‘MSABIZ’ – Landscaping Committee and Commercial Building Benchmarking & Disclosure Stakeholder Group. She enjoys kayaking and is shifting from hiking to biking to protect those hardworking knees. Jan and her husband, Carey, have joined with their eldest son in establishing Project Odakniwa, to support sustainable development in Mapuche communities located in southern Chile.

“Reality can be beaten with enough imagination.” – Mark Twain

“Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has.” – Margaret Meade.

Brian Winkler

Senior Principal

In addition to being A3C’s Operations Manager, Brian is also active with the Charter Township of Commerce, where he serves on the Planning Commission as Secretary, is an Executive Board member of the Downtown Development Authority, and assists with the Walled Lake/Commerce Township/Wixom Rails-To-Trails Council. He has also been active with the Southeast Michigan Chapter of IFMA, serving as the Volunteer Chairperson for the annual Chapter Golf Outing for the past 10 years. He has managed health care projects for 30 years, 25 of these years with A3C. He and his wife, Nelia, have 2 grown children and celebrated their 34th Wedding Anniversary in 2017. Also, Brian and Nelia welcomed their first grandchild, Anna Clare, in June 2017. Brian enjoys golfing (albeit poorly), playing racquetball, and tennis.

“If you see a fork in the road, take it.” – Yogi Berra

“Too often we enjoy the comfort of opinion without the discomfort of thought.” – John F. Kennedy

Ron Lincoln 


Ron has been with A3C for half of its history and one quarter of his. Why did he become an Architect, instead of a circus clown? “I enjoy the challenges of combining client expectations with regulatory restrictions, industry standards with technological advances, and sustainability with proven materials and methods to produce solutions that enhance the places where people live, work, and play. That, and I turned down an offer from Ringling Bros. Clown College.” His other creative outlets  are Halloween costume design and architectural gingerbread creations.

“God is in the details.” – Mies Van Der Rohe

“I may not have gone where I intended to go, but I think  I have ended up where I intended to be.” – Douglas Adams

Lissa Spitz 


Although Lissa prefers not to mention the exact number of years she has worked in health care design, it’s certainly long enough to account for the greying hair.  She is grateful to have landed at A3C because of the great people, orientation toward service, and commitment to sustainable design. Her current volunteer efforts are focused on Climate Ride Midwest, to benefit the Ecology  Center. Lissa recently moved to Ann Arbor with her husband Michael and both children, where they are undertaking a sustainable remodel of their new-old home. She is thrilled to finally be close enough for bicycle commuting.

“Be humble for you are made of Earth. Be noble for you are made of stars.” – Serbian proverb

“If you don’t like what you’re doing, then don’t do it.” – Ray Bradbury

Paul Wesenberg

Senior Associate

As a child, Paul’s parents had a home built on a family property. As Paul watched the house go from paper to reality, he saw the magic and became inspired to pursue a career in architecture. Paul has been with A3C since his college graduation and feels blessed to have been able to watch many projects go from paper to reality, much in the same way as his childhood home. Watching the final structure come to fruition takes him back to the memories of his youth and alleviates much of the stress this industry tends to create.

As an Eagle Scout, Paul has worked to find a life dedicated to finding ways to improve his community and environment, while maintaining a level of fun and purpose. He sees his work, and the work of his colleagues, as an extension of that dedication.

“If you make listening and observation your occupation, you will gain much more than you can by talk.” – Robert Baden-Powell

“God created paper for the purpose of drawing architecture on it. Everything else is, at least for me, an abuse of paper.” – Alvar Aalto


  • 2018 Honor Award, AIA Huron Valley

  • Business Leadership Award, Great Lakes Renewable Energy Association

  • Facility Management Project of the Year, Southeast Michigan IFMA

  • Going Green Award Honoree, CORPI Magazine

  • Green Building of the Year Honoree, Construction Association of Michigan

  • Greenest Southeast Michigan Office Award, 100.7 WNIC Radio, Detroit

  • Honorable Mention Award, Washtenaw County Waste Knot

  • LEED-CI Gold Certified Project, U.S Green Building Council

  • Life-Cycle Cost Analysis Research Grant Recipient, AIA Upjohn Research Grant Initiative

  • Pyramid Award for Best Innovation, Washtenaw Contractors Association

  • Renewable Energy & Energy Efficiency Awards, Ann Arbor Energy Challenge

  • Small Business Energy Program of the Year, ESD/DTE Special Energy Awards