About Us

RKETEK is owned by its founder, Architect Martin Sell, AIA, NCARB.

Marty holds a Bachelor of Science degree from UW Milwaukee and a Masters of Architecture degree from the same school. Upon graduation – at the age of 22 – Marty became one of the youngest Architects ever registered in the country. UW Milwaukee has acknowledged Marty’s continued accomplishment in presenting an Alumnus of the Year award. 

Marty holds a National Council of Architectural Registration Board certification and has held registration as an Architect in twelve states. He is also a registered Interior Designer.

Prior to forming RKETEK in 2001, he built several businesses specializing in combined design and construction services. He furthered his development and business skills by achieving his Masters of Business Administration degree from the School of Business at the University of Wisconsin – Madison in 2000.

He has given back to his profession by serving on the Board of Directors – and as President – of the American Institute of Architects (AIA) in Wisconsin. He also served AIA nationally on the Design-Build and Project Delivery Knowledge Communities, serving as Chair of the national AIA committee. He presents frequently on design, development and construction management topics to national and international conventions and symposiums in the areas of development, architecture and construction.  

He strengthens the future of the design and construction profession as an Adjunct Professor at the Milwaukee School of Engineering where he teaches Architectural History, Construction Cost Estimating, and Real Estate Development. He has also served his church and his local community by serving on numerous Boards of Directors and Committees.

Marty attributes his professional success to the people and the integrated team of professionals surrounding him. Throughout Marty's career, this team has consisted of diverse and talented professionals.

The current RKETEK team includes professionals trained in architecture, engineering, landscape architecture, planning, sustainable design, 3D computer modeling, interior design, real estate development, cost estimating, financial planning, and construction management services. 

Here are some things people are saying about RKETEK's current & past projects:

Spencer Schools Dome Project 

Site Overview Video

Dome Inflation Video

Monolithic Dome Institute on Spencer Dome Inflation

Final Project Flyover


Johnson Creek Schools Dome Project 

Discover Wisconsin - Wisconsin's First Domed School

Monolithic Dome Institute on Johnson Creek Schools

Beaver Dam Police Department and Municipal Court          See the project

“We’ve looked at different ways to fund projects or have them designed. An integrated delivery approach of combined architecture, engineering and construction management seemed to make the most sense for us for the new Beaver Dam Police Department and Municipal Court project.  I believe in educating yourself with all of the options out there. If the shoe fits, try it.”

Mayor Thomas Kennedy

City of Beaver Dam, Wisconsin

“We enjoyed working with Marty Sell and his staff on the Beaver Dam Police Department and Municipal Court Project. On a personal note, I appreciated Marty’s approach to solving problems. He always considers input from the contractors before making decisions, and building trust with the team members remains important to him.”

Dennis J. Winkler
Specht Electric & Communications

Fond du Lac, WI

The Watermark          Project Homepage

"The arrival of the Watermark as a center where the community will gather will build on the positive momentum that our community is already experiencing with downtown revitalization. The Watermark will bring beauty, class and character to yet another area of downtown that will be immensely improved by its presence and programs. Beaver Dam Downtown, Inc. enthusiastically welcomes the future Watermark!"

Beaver Dam Downtown, Inc.

Board of Directors

“The Church Council at First Evangelical Lutheran Church whole-heartedly endorsed the Watermark Project.  The more we can work together and support our respective efforts to enhance the well-being of our Beaver Dam community (which in turn benefits all of Dodge County), the richer our life together will be in the present and for the future.”

Rev. Dr. Mark J. Molldrem
First Evangelical Lutheran Church

“The Watermark will be used as a senior center, but also serves a multitude of functions. It will be a meeting place the whole community can utilize”.

Jeff Nowicki, Owner

Hometown Glass and Improvement, Inc.

“The Watermark brings a lot of people working together, and that by itself builds community”.

Ellen Sushak, President

FRIENDS of the Beaver Dam Community Center



Our team has designed and built more than 50 educational projects, including the first monolithic concrete school in Wisconsin.



Our experience includes more than 235 religious projects, including historic restorations, building additions, and new facilities in more than a dozen states.

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Green and Brown

We have designed and built award winning Green and Sustainable projects and we redevelop former Brownfield sites.  



Our portfolio also includes libraries, police stations, courts, offices, banks, grocery stores, resorts, restaurants, medical, auditoria, museums, and more.  

Branded Retail

Focused on branded retail construction for a variety of Fortune 500 companies nationwide.

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