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ADU (Accessory Dwelling Unit) Construction in Wausau, WI
Add flexible living space with thoughtful design, quality craftsmanship, and a team that guides you through every step.
Designed to Bring More Possibilities to Your Property
Accessory Dwelling Units give homeowners the freedom to create private, functional living space without leaving the neighborhood they love. Whether you are planning a guest suite, a space for aging parents, or rental income opportunities, Ross Construction helps Wausau homeowners design and build ADUs that feel comfortable, efficient, and well-integrated with the property. Our team communicates clearly, manages the full design-build process, and delivers craftsmanship that stands the test of time.
About Our ADU Construction Services
ADUs come in many forms, including detached backyard cottages, above-garage suites, basement conversions, and additions that create private living quarters. Ross Construction manages everything from initial planning and budget discussions to permitting, framing, utilities, finishes, and final walk-throughs.
Homeowners throughout Wausau, Rib Mountain, Weston, Schofield, and surrounding Marathon County choose our team for our clear process, in-house carpentry team, and ability to bring practical solutions to complex spaces. With more than 30 years of combined experience, we build ADUs that add long-term value and meaningful flexibility to your home.
Frequently Asked Questions About ADUs
Curious about what to expect? Here are answers to the most common questions homeowners ask about ADU construction.
- How much does it cost to build an ADU?expand_more
- ADU investments vary widely based on size, structure type, and finishes. Detached ADUs, above-garage suites, and major basement conversions often range from the high five figures to well into the six figures. After our initial consultation, we build a clear budget tailored to your goals.
- How long does an ADU project take?expand_more
- Most ADUs take four to eight months from design through completion. Larger detached structures or projects requiring significant utility upgrades may take longer. We help you understand timeline expectations early in the process.
- Do I need plans or an architect before contacting you?expand_more
- No. Ross Construction offers in-house design support and partners with trusted architectural professionals when needed. We manage design, engineering, and permitting so the project stays organized and aligned with your budget.
- What types of ADUs do you build?expand_more
- We build detached backyard units, above-garage apartments, attached living suites, and basement ADUs. Each design is customized to fit the property and the homeowner’s long-term needs.
- Can an ADU be used for family members or rental income?expand_more
- Yes. Many homeowners build ADUs for multigenerational living, guest accommodations, aging parents, or supplemental rental income. We help you plan a layout that fits your intended use and follows local code requirements.
Our Design-Build Process
Many homeowners choose to include these upgrades when investing in an ADU:
ADU Remodeling Cost Guide
Understanding the cost of a kitchen, bathroom, basement, addition, or whole-home remodel in Wausau can feel overwhelming. Our Remodeling Cost Guide gives you real numbers, real examples, and real guidance, so you can plan with confidence and avoid surprises.
- Clear pricing ranges for kitchens, bathrooms, basements, additions, and whole home remodels in Wausau
- Insight into what drives costs up or down so you can make informed decisions
- A helpful breakdown of features, upgrades, and selections to expect at each investment level
Where We Work
Ross Construction serves homeowners throughout Wausau and the surrounding North Central Wisconsin region, focusing on high-quality remodeling and design-build projects in established neighborhoods, lake communities, and high-value areas. Our team understands the homes, landscapes, and local building styles that define this part of Wisconsin, and we bring a trusted reputation for craftsmanship and communication to every project. Whether you live in town, near the water, or in a nearby community, we are committed to delivering work that feels right for your home and your lifestyle.
If you do not see your area listed, reach out, and our team will let you know if we can help with your project.
Our Service Area
- Wausau
- Weston
- Rib Mountain
- Schofield
- Minocqua and Surrounding Lake Communities
- Rothschild
- Kronenwetter
- Mosinee
- Merrill
- Wausau West
- Wausau East
What Homeowners Are Saying
We had our roof, main entry door and Patio door replaced through Ross construction. We were very pleased with the process. They were willing and able to work with our crazy loan process. They listened to our needs and concerns and were able to make helpful suggestions resulting in a great experience. The end results came out better than expected, we were very pleased with their efficiency and quality of work. I will definitely look to them for any future projects we come up with.
Tony Robinson
Ross Construction did cement work for us. We had a curved sidewalk put in. We are VERY pleased with the quality of the project. They were very professional,showed up when they said they would,cleaned up the site and completed in a timely manner. Matt was great to work with and the crew was excellent!
Christele Hall
Ross Construction replaced the rotting wood trim around our garage doors. The scheduling process was easy and we felt comfortable having the capable workers perform their job here! The work was completed in a timely manner and the results were just as we expected! The workers were highly respectful of our property! We highly recommend Ross Construction to those needing outside home repairs!
Judy Wyskoarko
Ross Construction did a fantastic job remodeling our deck. Communication was excellent and the quality of work is best in class. I would highly recommend them if you have a project that you need to complete.
Tim Brumbaugh
We have had Ross Construction do several jobs for us all from putting a complete new roof on my mothers garage to redoing our fire place, putting tile in kitchen to handling our water damage ect…. They have always been so easy to work with. They handle everything. They keep in contact with you and do an excellent job! We have absolutely no complaints. Wonderful family to work with!
Diane Kielman
We had a fantastic experience doing an extensive home remodel with Ross. The team was responsive, professional, and delivered high quality work. Projects finished on time and exactly as budgeted. They stand by their work and addressed any and all follow up questions and asks.
Phillip Dane
We recently hired Ross construction to renovate our kitchen, and I couldn’t be more impressed with their work! From start to finish, they were incredibly professional and kept me informed every step of the way. They showed up on time every day and worked diligently to ensure the project stayed on schedule.
What stood out to me most was their honesty—there were no hidden costs or surprises, and they made sure to discuss any changes or adjustments before moving forward. The quality of the work was exceptional, and the finished kitchen exceeded our expectations.
We would definitely hire them again for any future projects and highly recommend them to anyone looking for reliable, trustworthy contractors. A great experience all around!
Michelle Jensen
Ross Construction did a complete overhaul in my kitchen. Our family couldn’t be more pleased with its outcome! They had great communication throughout its process and the house stayed as clean as possible until it was completed. Thank you so much!!
Kari Prohaska
Ross construction is the definition of a professional contractor. The way they approach customer service and quality in their work is second to none. From communication with a bid to attention to detail in the project, their team is the best choice in central Wisconsin. Thank you for your great work on our new home.
Rob Love
Start Your Project With a Team You Can Trust
Clear guidance, honest communication, and craftsmanship you can count on.
Connect with our team to discuss your goals and schedule your first conversation. We will walk you through the next steps, answer your questions, and help you move forward with confidence.