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.

Read Loren’s Employee Spotlight on our Remodeling Blog.


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 CFO. 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!


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.


Doug grew up in Philadelphia but moved to the Midwest in 2014 and hasn’t looked back. He spent 3 years working at a camp and conference center in rural Wisconsin before moving to Minnesota and starting in construction. He has a wide range of experience from maintenance on old apartment buildings all the way to framing multimillion dollar homes on Lake Minnetonka. He started at Castle in 2021 and has worked in a variety of roles.

Outside of work, Doug loves spending time in the great outdoors camping, hiking, biking and skiing. On Saturday mornings, you’ll find him tuning in to watch Manchester United matches. Doug also loves spending time with his wife, Rachel, and dog, Rooney.

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.


Through the years I’ve installed siding, roofing, windows, concrete cutting, and anything else thrown at me. In 2015, I was told about Castle needing a warehouse Manager, I thought it might be the right fit for me. I have been with the company since. I have always enjoyed teaching, and this job was the perfect mix of tasks that allowed me to pass down the knowledge I had gained from working for Castle.


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 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.


After graduating with a B.S. in Accounting, becoming a CPA and working 3 jobs in 3 years, Steve took a large paycut to go to work as a trim carpenter and cabinet maker.  He started his own carpentry/remodeling company after a few years and ran it until the housing market crash of 2007.  He then went back into accounting as a bank auditor and then a 3 year stint at Boston Scientific. He attained his MBA during this time period.  The office environment was difficult so he begged and pleaded for a carpentry job with Castle Building and Remodeling.  Once at Castle, he transitioned to project manager for several years, finally landing in Special Project sales.

Steve is married with 3 kids (ages 14-20).  He enjoys camping, bowhunting, and hiking.  His 1914 Minneapolis home and river  cabin in Pine City keep his carpentry skills sharp.


Bailey joined Castle in 2021 after working in healthcare for nearly ten years. She has an extensive background in reviewing medical documents, calculating, and figuring out the best treatment for the patient’s test results. She took the tools she had learned to shift her career into a passion she has always had.

She has run her own small businesses on the side, learning how to market her own products. She is now using those skills to promote Castle. Once she started working at Castle, she knew this was the right place for her.