Who we are

Customer focused with over 60 years of experience

Lenken is a full service customer focused commercial construction company delivering high quality projects by traditional design-bid-build services as a general contractor as well as design-build services where we integrate the design and construction process under one contract.  We blend high levels of expertise and experience with a small personal team that is invested in you and your project.

Contact us
construction worker wearing yellow hardhat in front of bulldozers
purple outline of a building
large commercial construction site with sun in background

What we do

Lenken provides commercial construction services for clients and projects ranging in size from less than $100,000 to over $10 million.  This includes new construction, additions and renovations.  Types of projects include senior living, health care, commercial offices, retail and light industrial.  

Learn more
What we offer

Our Services

Lenken provides expertise in Program Management, Construction Management, General Contracting and Design-Build.

yellow house, rule and pencil icon


At Lenken, design and construction are under the same roof. We work as an integrated team to help you achieve your goals on time, on budget, and with the best possible results.

yellow construction worker with wrench icon

General Contracting

Lenken works along side you and your design professionals, developing relationships based on mutual respect and years of experience in order to skillfully execute the project on time and on budget.

Our Services
years experience
savings returned to clients
Have A Project?

Let's work together

Tell us about your construction project and find out if Lenken is the right fit. We are prepared to help you at any phase.

Contact us


Mike Preston Portrait

Mike PrestoN

"I've worked with both John Hummel and Walt Tack in various capacities since 1994. John has been both a mentor and a colleague, and Walt has been partner in some of the largest projects ($150M+) I have worked on and in one of the smallest. I look at both these gentlemen as examples of integrity in the design and construction industries. You will be well served working with John, Walt, and Lenken Construction."

Senior Associate, Stantec
Lt. General William Pagonis

Ret. Lt. General William Pagonis

"If you want a professional construction commercial project completed on time with great expertise—Lenken Construction Services is the  company you need. I had two commercial projects completed by Lenken and both were superb, on budget, and workmanship was outstanding. In addition, they really mean it when they say 'we guarantee our work , and the customer must be 100% satisfied.'"

Steven Tack

Steven Tack

"When our organization decided to embark on a major construction program our next decision was to contact Lenken Construction to lead us through the process.  We haven't regretted that decision for one minute."

CEO, Quality Life Services