Loren Schirber attended the University of North Dakota where he graduated with a Bachelor of Business Administration in Marketing and received a Certificate of Entrepreneurship. After UND Loren worked for CROSSMARK Sales and Marketing, an organization that competed in the space between consumer-packaged goods companies and mass merchandisers, eventually moving to Plano, TX to work at the corporate headquarters. After two years in the corporate world, Loren decided to return to Minneapolis to attend graduate school and be closer to his future wife, Jill Wilhelmi, family, and friends. Loren attended the University of Minnesota, Carlson School of Management full-time, and received his MBA in 2005. Loren’s studies focused on Venture Growth, Entrepreneurship, and Marketing.

Integrator and CFO – Tambra Lee Heine

Tambra has been in the accounting world for over 25 years, where she has worked mostly for small businesses and nonprofits. She graduated with a Bachelors in Business (Accounting emphasis) and later went back to become a Certified Nonprofit Accounting Professional. “But I try to make a profit,” Tambra jumps in, as she laughs at her own joke.

Tambra came to Castle because she has always had an interest in architecture, design and remodeling. She also likes cost accounting, which she gets to work on as a Castle Office Manager. She was attracted to Castle specifically because of the information we have on our website. “I like that Castle offers education classes and is such a resource for homeowners, instead of just talking about how great they are. I like Castle’s business model and I’m confident they’re a stable business- I wanted to be a part of that!”


Larry has been at Castle since 2014.  Starting as a lead carpenter, he has quickly proved both his knowledge and skills and is now our Production Manager.  Larry taught High School for a few years Before moving into the home remodeling industry in 2001, Larry spent a few years teaching High School Agriculture Science.

Castle is a great place to work with a great team of designers, field crew, and managers. The key to a good company and great projects is great people. Larry appreciates the communication and systems necessary to help great people be a great team, as we have here at Castle.

Larry is married and has two children, middle and high school age, along with a house full of various pets. In his spare time, he enjoys canoeing, hiking and gardening.


John has been in construction sales for over 20 years.  He sold and worked in most facets of residential remodeling, new construction, and commercial construction.  Working at Castle allows John to focus on the thing he loves most about the construction process: and that’s talking with every new Castle client about their project and then watching our designers and crews bring those projects to life!

 Just like John’s wife Theresa, he has lived in Minnesota his whole life.  They have two beautiful daughters who he says are growing too fast!!  Their daughter Rose stays busy on the softball field all year while their youngest, Grace, loves to spend summers riding horses as often as possible.  Lots of variety!


Brent has over 30 years of experience establishing and maintaining strong business relationships and providing exceptional customer service and sales across multiple industries. Brent has a wide range of experience in the construction industry from laborer to foreman. He spent time working on luxury homes in Kansas City, opening and assisted living centers in rural Wisconsin, and even assisting in repairing homes damaged by hurricanes in Florida.

Brent has a love for bicycling. He is the co-founder of The Recovery Bike shop, as well as, The Cycling Museum of Minnesota. He enjoys spending time in the creative fields with professional experience in photography, music, and graphic arts.


Chad Hansen’s bio coming soon!


Rich Simonson’s bio coming soon!

OFFICE MANAGER – Christie Rose

Christie joined Castle in late January of 2022. 

After an almost 20-year career in Operation Management in transportation; most recently student transportation, Christie decided to take a detour and seek employment that offers a new experience in home remodeling and construction. 

Being the Office Manager, Christie is fortunate enough to see the entire process come to life, from the design to the final billing and results. She thoroughly enjoys being able to witness the incredible skill set each person provides to the project, whether small or large. 

Christie became a first time Grandma late last summer, so when she is not at work, she is pestering her daughter and picking up baby Oakleigh. You will often hear Christie refer to her as her bestie; Oakleigh has brought a new meaning to love and laughter. Witnessing her grow has been a remarkable blessing! 


With a Bachelor’s of Science in Graphic Design and strong interest in marketing and small, family operated businesses, Hannah’s unique skill set was a welcomed addition when she joined the Castle team in late 2019. Hannah was part of the Castle family previously upon graduating from college and she helped to initiate our annual Fall Home Tour in 2012.

Upon getting married in 2014, Hannah left Minneapolis to support her husband’s military career. They have lived in many places across the United States and currently reside in sunny California with their two young kids and Australian Shepherd. Despite staying busy at home with her kids and volunteering for multiple military nonprofits, Hannah was ready to take back her career. It was fate that the position opened up at Castle and Hannah is overjoyed to be back with such an amazing group of people and an even more wonderful business (even from afar).


Darren came to the Castle team with extensive construction and home remodeling knowledge and skills. He has been in the construction industry since 1994 and has worked in all areas of the construction process, including general carpenter, lead carpenter, finish carpenter and project manager. In 2003, Darren started his own trim company. He also has extensive knowledge in electrical, plumbing and tile work.

For sixteen years, Darren worked as a project manager; running everything from small bath remodels to whole house builds. His portfolio includes homes valued in the millions which contributed to his extensive knowledge installing ultra-high-end cabinets and planning cabinet layouts.

Darren has two adult children that have grown up and are out on their own. In his free time, Darren spends a lot of time riding or working on motorcycles. He also enjoys working on his own projects and assisting on construction projects for friends.


With 30+ years of experience is the construction remodeling industry Brian has experience in all facets. From drafting, sales and design to project management. He especially enjoys project management, working with the plans, owners’ interpretation and what the house will let us do is his favorite part, all while building relationships along the way.

When not working Brian enjoys spending time outdoors with his wife and two children.

PROJECT MANAGER – Kirsten Billmeyer

Houses are Kirsten’s passion. At a young age she started playing around with houses in her head – what she would do if she had a magic wand. Kirsten graduated from Dunwoody College with a B.A. in interior design but since has changed direction to focus on Project Management. She has been working towards making houses amazing, efficient, and to their full potential ever since.

When she isn’t busy dreaming up beautiful spaces, she likes to spend most of her time with her blonde lab, Ty, hiking, camping and finding anywhere that’s dog friendly (including patio happy hours!). You’ll find Kirsten outside in the sun whenever possible.

PROJECT MANAGER – Tanner Griffiths

Tanner joined our Project Manager family in 2021. He specializes in full gut remodels as well as building second story additions on residential properties. Tanner’s construction background stems from mostly trim carpentry but he also has a lot of experience with exterior siding and framing. His favorite feeling in construction is when that final handrail is placed on, the last door knob, or even the final bit of paint touch-up. Being able to see the project he and the team has put so much time and energy into, come together into a beautiful finished product is truly the icing on the cake.


Jeffrey Blye’s bio is coming soon!


Doug Henley’s bio is coming soon!