The Natural Built Home Store Team

NBH Staff photo

One Team

The Natural Built Home Store is a part of Castle Building & Remodeling, Inc ( and our designers work across company lines based on their skills, experience, and passion. Our Remodeling Designers are unique in that they know both the green, design, and remodeling aspects of planning a project. Find out more about the Castle design team and process here:

NBH Design Team

Ziva Danneker

Ziva is a recent transplant to The Natural Built Home Store from the corporate world, where she cut her teeth on shaping organizational culture, corporate sponsorship and events, and international travel.  After 7 years, she decided to feed her ever-present passion for interior design and remodeling by switching careers.  Fascinated by solutions that fuse art, architecture, technology, and sustainability, she believes that design should fit a person’s personality while simultaneously enhancing their lifestyle and supporting their functional needs.  Ziva and her husband, Jeremy, live in Savage with their two cats.  She has an unhealthy appreciation for sarcasm, boy bands from the 90’s, and chocolate-covered pretzels.

TJ Givens

Creating, building and drawing have always been a part of T.J.’s life whether it was constructing intricate structures with Legos as a child, helping his dad and uncle on various remodeling projects or sketching Split Rock Lighthouse. After seven years working in healthcare he found The Natural Built Home Store while attending Century College’s Kitchen and Bath Design program. Appreciating their responsible approach to remodeling, stewardship of the environment along with unique alternatives in materials, he joined the team in 2015. He agrees with Frank Lloyd Wright, “Form follows function – that has been misunderstood. Form and function should be one, joined in a spiritual union.” He tries to find new ways to solve old problems and believes each space deserves its own character; if a project takes its inspiration from another it should personalize it so as to not mindlessly follow a trend. Apart from his time at NBH he spends his time with his wonderful wife raising and laughing at his crazy but amazing son and daughter. He can often be found trying to find the Twin Cities best mocha, gaming online with friends or searching for great new and used music at the Electric Fetus. During the spring and fall he enjoys rollerblading and biking around Lake Calhoun, Como and Long Lake but during depths of humidity and cold starts to wonder why he left California and longs to travel.


Nicole Wahl

Nicole attended University of Minnesota’s College of Design studying fashion and retail merchandising and spent 8 years creating visual displays in stores.   Having always had an eco-conscious mindset she decided it was time to make a move into the residential interior design community.   She comes to The Natural Built Home store excited to work with green building materials and inspire customers to create a home space free of toxic chemicals.  Nicole herself focuses on creating a holistic and green lifestyle by practicing composting, commuting by bike and buying local products.  In her spare time, she loves to spend time outside, host bonfires, and check out local hotspots for food and entertainment. 


Remodeling Leader

Loren Schirber

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. 

While attending the U of M Loren began working at his father’s business Castle Building & Remodeling learning the remodeling business.  In 2008, after significant growth, Loren acquired Castle Building & Remodeling from his father.  Loren continued to grow Castle Building & Remodeling by opening more neighborhood design studios and through unique marketing strategies.  In 2012, Loren merged Castle with Camelot Builders and partnered with Aaron Johnson.  In 2014, Castle acquired The Natural Built Home Store which Loren has taken an active role in managing.  Loren is passionate about sustainable remodeling and design and is an avid walker and biker.  In his free time Loren volunteers for the Northeast Investment Cooperative board where he has learned about commercial real estate development using a coop model.  Loren is married to Jill Wilhelmi and lives in NE Minneapolis.  In 2016 Loren and Jill adopted a baby boy and started their family. 

Training Philosophy

The Natural Built Home Store’s Remodeling Designers are unique in that they know both the green, design, and remodeling aspects of planning a project. The Natural Built Home Store’s Continuing Education program was designed to cross-train designer/sales employees on construction practices and allow for hands on experience. Each employee is able to request a certain construction task that they would like to assist on. Some examples include demolition, interior framing, window install, cabinet install, tile install, and painting. By learning how job sites run, how the products they sell are installed, and how long installation takes, the designers will become better estimators and be more knowledgeable when speaking with homeowners. They will also be able to spot more issues on their first visit to a home, avoid problems during projects, and become well-rounded designers.

Our designers each have unique backgrounds and skill sets, although most received degrees in either Interior Design or Architecture. Below you will see how many hours are expected of The Natural Built Home’s design/sales staff and how their continuing education and industry experience relate to their titles as well.

Eco-Design Advisor: 1 Year minimum in this position (or 3+ years relevant industry experience to skip this step)

Eco-Design Intern: 3 month minimum in this position (or 1+ years relevant industry experience to skip this step)

Remodeling Designer: 16+ field credit hours minimum, plus one year or industry experience

Remodeling Design Pro: 32+ field credit hours in past two years (16 hours annual ongoing continuing education), $600,000+ in annual completed remodeling projects two consecutive years.