We are based out of Appleton, WI and service much of the Badger State. MJI Building Services, LLC is directed by highly-skilled industry leaders with more than 90 years of combined construction experience. Our expertise allows us to complete our customers’ projects using innovative and functionally-proven construction techniques.


Call 920.462.4382 to learn more!


Mark Ihlenfeldt

President & Co-Owner

Mark is a leader and visionary who founded MJI Building Services in 2014. He plays a significant role for the overall operations of MJI Buildings Services, with focus and commitment on quality and straightforward communication within business and client relationships. With over 26 years in construction experience, Mark can analyze a situation, identify potential deficiencies and alter as needed during times of difficulties as he loves to solve problems.

When Mark is not working, you may be able to catch him getting his butt kicked at Fit Body Boot Camp. In the meantime, he enjoys spending time with his family, dating his wife and sipping on a good craft beer with friends.

“Thus every matter, if it is to be done well, calls for the attention of the whole person.” – Martin Luther


Brian Van Boxtel

Vice President & Co-Owner

Brian, an innovative thinker possessing a great deal of stamina, partnered with MJI Building Services in 2017.  He is responsible for taking control of the work and working closely with our clients and sub-contractors to make the right decisions when faced with challenges.  With over 28 years in the construction industry, Brian is hard-wired to work industriously and can quickly weigh alternative paths while controlling the best scenario.

In his spare time, Brian enjoys riding his Harley with his wife and loves the sport of shooting trap with his daughter.  Aside from it being the busiest season at work, summertime is his favorite time of year to go boating, watch the races and enjoy a cookout or campfire with his family and friends.

“Always deliver more than expected.” – Larry Page


Kayla Fournier

Chief Financial Officer

Kayla is known for wearing multiple hats at MJI Building Services.  She is responsible for all accounting functions, including policies and procedures, cash management, financial reporting and tax planning for the company.  Her key focus is management accounting, while strategically planning the future.  With over 14 years of accounting experience, Kayla has a strong inner drive that motivates us to work hard and be better.

Outside of work, Kayla is happily traveling the country with her husband and enjoys spending time with her boxer dogs, family and friends.  If you are out enjoying a glass of wine at a winery or even a restaurant experience, you may bump into Kayla admiring the same.

“Success doesn’t come from what you do occasionally. It comes from what you do consistently.” – Marie Forleo

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