--- title: "Design Theory 19 — Interior Designers & Decorators | Houzz" canonical_html_url: https://www.houzz.com/professionals/interior-designers-and-decorators/design-theory-19-pfvwus-pf~93959801 markdown_url: https://www.houzz.com/md/professionals/pf~93959801.md entity_type: LocalBusiness business_name: "Design Theory 19" category: ["Interior Designers & Decorators"] image: https://st.hzcdn.com/fimgs/10a331f1059ad280_6602-w400-h400-b1-p10--.jpg address: "Wausau, Wisconsin 54403, United States" phone: "(715) 849-5925" website: http:// rating: 4.9 review_count: 19 best_of_houzz_awards: 6 followers: 94 last_updated: 2026-09-17 --- # Design Theory 19 Original Houzz profile: [Design Theory 19](https://www.houzz.com/professionals/interior-designers-and-decorators/design-theory-19-pfvwus-pf~93959801) ## Professional summary - **Primary category:** Interior Designers & Decorators - **Location:** Wausau, WI - **Serves:** Green Bay, Wausau, Stevens Point, De Pere, Wisconsin Rapids, Marshfield, Weston, Kronenwetter, Rhinelander, Rib Mountain, Rothschild, Schofield, Hatley, Minocqua, Brokaw, Aniwa, Ringle, Stettin - **Houzz rating:** 4.9 out of 5 (19 reviews) - **Best of Houzz:** 6 awards (2017–2025), for Service. ## About ### Houzz Badges - Star Houzzer - Recommended on Houzz - 500 Ideabook Saves - Veteran owned - High-end - 16 years in business OUR TEAM: -MINDY HOPPE- Mindy is the Principal Designer and Owner of Design Theory 19. With a degree in Interior Architecture, Mindy is able to comprehend the construction of spaces as well as having the ability to offer solutions for better flow and aesthetics throughout one’s home. Also creating concepts for work environments which involves processes for employee retainment, branding, universal design or biophilic design. OUR STORY: Since its founding in 2007, Design Theory 19, formerly known as Inner Piece Interiors, evolved from a retail design store in downtown Wausau, Wisconsin to a multidisciplinary interior design firm engaging in a variety of Residential, Commercial, Senior Living, Dental, Healthcare and Hospitality projects. The principle behind Design Theory focuses on the fundamentals of architecture and interior design. With over a decade of experience in small to large-scale projects, DT19 crafts unique spaces focusing on how clients see and perceive visual information. Separates ideas and style, taste and trend from universal principles of aesthetics that are common to every person. 19 represents 2019, the year Hoppe purchased the design firm, but more importantly, it represents the 1900's. The history of interior design was curated in the 1900s and Interior Design was born. ### Services Provided - Interior Design - Kitchen Design - Bathroom Design - Living Room Design - Bedroom Design - Space Planning - Furniture Selection - Dining Room Design - Lighting Design - Custom Kitchen Cabinets - Entry Design - Floor Plans - Playroom Design - Custom Bathroom Vanities - Laundry Room Design - Mudroom Design - Nursery Design - Custom Blinds & Shades - Custom Home Bars - Universal Design - 3D Rendering - Basement Design - Custom Rugs - Custom Fireplace Mantels - Wine Cellar Design - Kitchen Remodeling - Home Office Design ### Areas Served - Green Bay - Wausau - Stevens Point - De Pere - Wisconsin Rapids - Marshfield - Weston - Kronenwetter - Rhinelander - Rib Mountain - Rothschild - Schofield - Hatley - Minocqua - Brokaw - Aniwa - Ringle - Stettin ### Typical Job Cost $50,000.00 - 500,000 ## Business Details | Field | Value | | --- | --- | | Business Name | Design Theory 19 | | Address | Wausau, Wisconsin 54403, United States | | Phone | (715) 849-5925 | | Website | http:// | | Followers on Houzz | 94 | **Social profiles:** - Facebook — https://www.facebook.com/designtheory19/ - LinkedIn — https://www.linkedin.com/company/38109321/admin/ ## Contact - **Houzz profile:** [Design Theory 19](https://www.houzz.com/professionals/interior-designers-and-decorators/design-theory-19-pfvwus-pf~93959801) - **Website:** http:// - **Phone:** (715) 849-5925 ## Credentials **Certifications & Awards** - Mindy Hoppe, 2019 Young Athena Nominee - Mindy Hoppe, 2020 Young Athena Award Winner - Mindy Hoppe, 2020 Volunteer of the Year, ASID - WI - 2020 ASID WI - Fehrman Orthodontics- Silver Award - 2020 ASID WI - Tall Oaks Powder Room - Bronze Award - 2020 ASID WI - Marble Rock Residence - Bronze Award - **Best of Houzz:** 6 awards (2017–2025), for Service. ## Reviews **Overall rating: 4.9 out of 5 — 19 reviews** *Aspect averages:* - Work Quality: 50.0 - Communication: 50.0 - Value: 50.0 ### Reviews **★★★★★ — HU-902629985, Aug. 2024** > Working with Design Theory 19 has been a great experience. I had a vision of what I wanted, but I know I needed professional help to get me there. What’s so great about Mindy and her staff is that they offer not only design assistance, but they also act as a project manager, finding reputable subcontractors to come into my home and do quality work. After having completed my kitchen update a few years ago, I came back to them for my master bedroom and bathroom update. I love their timely response to my inquiries, follow through, and attention to the small details. Design Theory 19 has my complete confidence and trust. **Comment from Design Theory 19:** > Thank you so much for the wonderful review Lois. We truly appreciate your business and your loyalty to our design firm! **★★★★★ — joanncam0, April 2023** > Design Theory 19 is an excellent, professional, and knowledgeable interior design group. They are very familiar with the Wausau community resources and beyond in order to serve their clients best. They also ask questions and listen carefully to their prospective customers and strive to match customer needs, style preferences, quality expectations, and price points. Our main interior project this past Fall was purchasing custom Hunter Douglas blinds throughout our newly built home, and we are completely satisfied with the outcome. We're not done yet... our next project will be obtaining custom carpets that enhance our interior design style, with the consultation of Design Theory 19. We highly recommend Design Theory 19. **Comment from Design Theory 19:** > Thank you so much Joann for your testimonial. We are thrilled with the outcome and so happy you made Wausau your new home! We look forward to working with you very soon! **★★★★★ — HU-552575393, Jan. 2023** > Design Theory 19 really listened to what we wanted in the project outcome. Mindy was so creative in how she updated our space but still incorporated what we wanted to keep from the old design. She really took the time to listen to what we wanted and gently guided us to what could be. We just wish we would have done the remodel sooner. **Comment from Design Theory 19:** > Thank you so much for your testimonial! It was our pleasure working with you and thank you for trusting us with your project. **★★★★★ — muellerlor, Jan. 2021** > We had the pleasure of the team at Design Theory 19 decorate for Christmas at our home for the winning bid at Festival of Trees. What a talented, creative crew. We would highly recommend them for interior design or refresh of your home **★★★★★ — Dave D, Nov. 2020** > I would highly recommend the team at Design Theory 19!! Early in the remodel process, I was debating on whether to sell or stay after the project was complete. My home was pretty big for just me as my two boys were getting older and moving out to school and careers. After Mindy and her team placed their finishing touches on my home, there was no doubt I was going to stay. I love my home again!! Just in time as COVID struck our world and limited most of my time to working from my home. Their ideas and vision for my home would have never been anything I could have constructed on my own. > > Before the renovation, my home was very dark and not very inviting. Now, I actually receive compliments about my home!! I find myself entertaining much more and now my personality and interests show throughout the home. I have no plans on moving; not even a thought. > > For future home projects, I will not even interview another firm. The team at Design Theory 19 is who I will always use. **★★★★★ — Sara, Aug. 2020** > I cannot say enough about Inner Piece Interiors! > From day one which was a thinking phase and having no idea how to start and being a weekend they responded. > I am not a person who likes this kind of project but they were wonderful! > They helped me with patterns choices and designs > Her questions and visuals and patience and I stress patience gave me what I had wanted > The gentleman that did the installation was very professional and informative also **★★★★★ — HU-902629985, Oct. 2019** > I recently updated my kitchen and a large area of flooring. I was looking for someone who could arrange all of the subcontractors as well as providing design services. Inner Piece Interiors coordinated everything, kept the project moving along, and helped me design a beautiful, updated kitchen and floor. **★★★★★ — HU-805008900, Sept. 2019** > From start to finish down to every detail, Inner Piece and their staff handled everything!! All the design ideas have resulted in a exceptional result with raving reviews from everyone that has seen the finished result!!!! **★★★★★ — Jeff Zriny, Sept. 2019** > Inner Piece designed and managed the remodeling of two bathrooms in our home. The project was a major remodel and upgrade taking everything down to studs and starting over. IP handled and coordinated everything including building materials selections and coordinating subcontractors. We were kept informed of the progress. The team they put together for the project were excellent. I would highly recommend them. **★★★★★ — kautzaa, Sept. 2019** > Great firm to work with. Inner piece has a great design team and is prompt and professional. They have an outstanding network of tradesman who all carry the same traits making Inner Piece a high caliber design firm in a league of their own. I would highly recommend them for any commercial or residential project. **★★★★★ — Bruce Knox, Sept. 2019** > We used Inner Piece on a living room project 4 years ago and were very pleased so we used them just now on remodeling our masterbath/shower and closets. The designers are very talented and came up with several options. Once we decided on an option they then worked with us on selecting colors, tile for the shower and floors, cabinets and fixtures. The best part of the project is that Inner Piece provided total project management. They selected the carpenters, plumbers, electricians, tile installers, drywallers, painters and shower door installers. All workers took pride in their work, resulting in overall excellent quality. We would highly recommend Inner Piece for any size projects. **★★★★★ — Jessica Schmidt, Sept. 2019** > Our experience working with Mindy and her staff has been nothing short of exceptional! They are prompt, professional, very creative and respectfully mindful of our budget. They do a thorough job presenting options across all price points, and offer recommendations and opinions without pressure. They make on-site visits and are very flexible with scheduling and meeting times. They have relationships with a diverse network of vendors, and prefer to use local businesses which we appreciate. > They also offer 3-D renderings, which is often difficult to find with an interior design firm. > This is a great service as it allowed us to easily see how different options such as window styles, door features, exterior materials and color palettes would look for our new construction and remodeled areas. > Mindy and her staff are extremely personable, courteous and very prompt in answering questions and providing project updates. Highly recommend! ## Selected projects - [Marble Rock Remodel](https://www.houzz.com/hznb/projects/marble-rock-remodel-pj-vj~6420316) - Location: Green Bay, WI - Photos: 19 - Description: Many homes have great bones like our Marble Rock Project but over the years they have lacked personality. Refreshing the interior of this home in Green Bay was very exciting not only for our team but for the homeowner as well. He was on the fence of Loving It or Listing it... Let's just say NO realtors are coming anytime soon! - [Blackberry Kitchen Remodel](https://www.houzz.com/hznb/projects/blackberry-kitchen-remodel-pj-vj~6008704) - Location: Wausau, WI - Photos: 9 - [Master Bedroom and Bathroom Oasis](https://www.houzz.com/hznb/projects/master-bedroom-and-bathroom-oasis-pj-vj~1382053) - Location: Wausau, WI - Photos: 9 - [Lake Wausau Kitchen Remodel](https://www.houzz.com/hznb/projects/lake-wausau-kitchen-remodel-pj-vj~1938519) - Location: Wausau, WI - Photos: 20 - Description: The original layout was dated and enclosed off from the other spaces and it was hard to entertain. We were able to remove the walls and expand the kitchen into the dining space. Replacing windows and patio door, while adding transom windows to bring in more daylight was key. With the growing family, we were able to expand on the kitchen island which is able to seat up to 10 people. It is great for family functions and for entertaining! The space between the island and the perimeter is 5' wide an… - [Vallie Lane Remodel](https://www.houzz.com/hznb/projects/vallie-lane-remodel-pj-vj~5594884) - Location: Mosinee, WI - Photos: 15 - [Eagle Ridge Remodel](https://www.houzz.com/hznb/projects/eagle-ridge-remodel-pj-vj~2651024) - Location: Merrill, WI - Photos: 41 - [Arrowhead Trail Remodel](https://www.houzz.com/hznb/projects/arrowhead-trail-remodel-pj-vj~3130042) - Location: Ringle, WI - Photos: 21 - Description: This beautiful home has amazing views from every window, but the layout did not offer the opportunity to enjoy it nor did it offer the space to entertain. The typical layout offered a nice size kichen with a boomerang island, informal dining room and a small seating area. By offering our clients the "outside of the box" concept, they were extremely intrigued on what they could have with the same amount of space. This wonderful family now has a chefs kitchen, a place to entertain featuring a slid… - [Nantucket Home - Lower Level](https://www.houzz.com/hznb/projects/nantucket-home-lower-level-pj-vj~2004055) - Location: Wausau, WI - Photos: 18 - Description: Lower Level Family Room which has southwest flair and rustic charm. - [Nantucket Home - Family Room](https://www.houzz.com/hznb/projects/nantucket-home-family-room-pj-vj~1761781) - Location: Wausau, WI - Photos: 5 - [Tall Oaks Remodel](https://www.houzz.com/hznb/projects/tall-oaks-remodel-pj-vj~6369631) - Location: Wausau, WI - Photos: 13 - [Country Club Remodel 2](https://www.houzz.com/hznb/projects/country-club-remodel-2-pj-vj~5594847) - Location: Schofield, WI - Photos: 6 - [Country Club Remodel](https://www.houzz.com/hznb/projects/country-club-remodel-pj-vj~5594838) - Location: Schofield, WI - Photos: 9 - [Nantucket - Home Office](https://www.houzz.com/hznb/projects/nantucket-home-office-pj-vj~1796955) - Location: Wausau, WI - Photos: 2 - [Weston Avenue Bathroom Remodel](https://www.houzz.com/hznb/projects/weston-avenue-bathroom-remodel-pj-vj~2654492) - Location: Weston, WI - Photos: 12 - [Nantucket Home - Master Bedroom](https://www.houzz.com/hznb/projects/nantucket-home-master-bedroom-pj-vj~1758575) - Location: Wausau, WI - Photos: 14 - [Orthodontics Office](https://www.houzz.com/hznb/projects/orthodontics-office-pj-vj~5981780) - Location: Weston, WI - Photos: 10 - [Spanish Mediterranean Residence](https://www.houzz.com/hznb/projects/spanish-mediterranean-residence-pj-vj~6829818) - Location: Weston, WI - Photos: 21 [See all 17 projects](https://www.houzz.com/professionals/interior-designers-and-decorators/design-theory-19-pfvwus-pf~93959801) ## Ideabooks - [Wish List](https://www.houzz.com/ideabooks/51133550/list/wish-list) — 4 ideas - [Schmidt - Kitchen](https://www.houzz.com/ideabooks/117573143/list/schmidt-kitchen) — 14 ideas - [Schmidt - Main Entrance](https://www.houzz.com/ideabooks/117573256/list/schmidt-main-entrance) — 1 idea - [Greenheck Guest House](https://www.houzz.com/ideabooks/78939162/list/greenheck-guest-house) — 97 ideas - [Arndorfer - Master](https://www.houzz.com/ideabooks/77777299/list/arndorfer-master) — 3 ideas - [Swiderski - Powder Room](https://www.houzz.com/ideabooks/75881474/list/swiderski-powder-room) — 5 ideas - [Swiderski - Kids Room](https://www.houzz.com/ideabooks/75779895/list/swiderski-kids-room) — 12 ideas - [Swiderski - Gym](https://www.houzz.com/ideabooks/75872773/list/swiderski-gym) — 5 ideas - [Swiderski - Media Room](https://www.houzz.com/ideabooks/75780448/list/swiderski-media-room) — 7 ideas - [Swiderski - Gun Room](https://www.houzz.com/ideabooks/75779216/list/swiderski-gun-room) — 7 ideas - [Swiderski - Master Bedroom](https://www.houzz.com/ideabooks/75779868/list/swiderski-master-bedroom) — 1 idea - [Arndorfer](https://www.houzz.com/ideabooks/65674425/list/arndorfer) — 9 ideas - [Nelson, Adam](https://www.houzz.com/ideabooks/69853830/list/nelson-adam) — 8 ideas - [Greenheck Outhouse](https://www.houzz.com/ideabooks/68275811/list/greenheck-outhouse) — 2 ideas - [Greenheck Shed](https://www.houzz.com/ideabooks/68275483/list/greenheck-shed) — 10 ideas - [Hoppe Landscaping](https://www.houzz.com/ideabooks/67266400/list/hoppe-landscaping) — 10 ideas - [P'ng](https://www.houzz.com/ideabooks/65635561/list/p-ng) — 7 ideas - [mary pierce](https://www.houzz.com/ideabooks/53841543/list/mary-pierce) — 6 ideas - [\#ImpactOfDesign](https://www.houzz.com/ideabooks/55948143/list/impactofdesign) — 11 ideas - [mindy376's ideas](https://www.houzz.com/ideabooks/51136728/list/mindy376-s-ideas) — 11 ideas [See all 20 ideabooks](https://www.houzz.com/ideabooks/users/designtheory19) ## Community Q&A **Q: Hi there. What countertop brand/color is this?** *(in Photo Questions)* Looking to confirm countertop color/brand. A: Cambria Bellingham **Q: Great room area rug** *(in Photo Questions)* I really like gray transitional area rug shown in the great room. Any idea who manufactures it? A: Sue, the rug was purchased through Surya. --- *Source: Houzz professional profile. Reflects the profile as of 2026-09-17.*