Home Addition Contractors Serving South Central Wisconsin

Frey Construction
Expert Home Additions from Frey Construction in Madison, WI

Add Space Without Leaving the Home You Love
Most families don’t outgrow their homes overnight. It usually happens little by little. A new baby, a parent moving in, or a home office taking over your living space can make your home start to feel tight.
When moving is not the right option, a well-planned home addition gives you the extra space you need while staying in the neighborhood you already enjoy. Frey Construction has been building home additions across Madison and South Central Wisconsin since 1995, guiding homeowners from the first design conversation through construction.
Types of Home Additions We Build
Every household uses space differently, so the right addition depends on your daily life. We design and build additions that feel like a natural extension of your home, not an afterthought. Here are some of the most common options:
Sunrooms: Add a bright, comfortable space that connects your home to the outdoors year-round.
Bedroom Additions: Create space for a growing family, guests, or a larger primary suite.
Mudroom & Laundry Additions: Keep everyday clutter organized and out of your main living spaces.
Garage Additions: Add storage, parking, or a dedicated workshop with attached or detached options.
Mother-in-Law Suites: Build a private, self-contained living area for extended family.
Playrooms & Home Offices: Create dedicated areas for kids, work, or both.

Why a Design-Build Approach Makes the Process Easier
Home additions involve a lot of moving parts, including design plans, material selections, permits, and construction. When those pieces are handled by separate companies, it often leads to miscommunication and delays.
Frey Construction uses a design-build approach, which means one team manages everything from start to finish. The same people who help design your addition are involved throughout construction, so nothing gets lost along the way.
You also have a Frey Construction employee on-site during each phase of the project. Subcontractors may be involved, but they work under direct supervision, ensuring clear accountability. If you have questions or concerns, you don’t have to chase down multiple companies for answers.
What to Expect From the Home Addition Process
We keep the process structured so you know what to expect at each step:
Free Consultation: We start with a conversation about your goals, your home, and what is realistic for your space and budget. If you decide to move forward, we’ll create detailed plans, renderings, and pricing so you know exactly what your addition will include before construction begins.
Permitting & Preparation: Home additions typically require permits. We handle that process so you don’t have to.
Construction: A Frey Construction team member is on-site throughout construction, managing the schedule and making sure everything stays on track.
Final Walkthrough: Before we consider the project complete, we walk through the finished space with you to make sure everything meets your expectations.
Why Homeowners Choose Frey Construction for Home Additions
We’ve been building homes and additions for nearly 30 years, and that experience shows in the way we approach each project. While awards and certifications matter, the strongest indicator of our work is that about 68% of our business comes from referrals.
Homeowners often come to us after dealing with projects that didn’t go as planned elsewhere. Our approach focuses on doing the work correctly the first time, with clear communication and consistent oversight.
Every home addition we build is backed by a 15-year workmanship warranty, so you have confidence in the investment you are making. Check out what our customers say about us or learn more about the Frey difference.
Home Addition Projects Across the Madison Area
We build home additions throughout Madison and nearby communities like Middleton, Waunakee, and Verona, as well as across South Central Wisconsin.
Recent projects include everything from full home expansions and kitchen additions to four-season rooms and lake home additions. Each project is designed to fit the home it is attached to and the family living in it. Check out our addition project gallery for inspiration and learn more about our service area on our areas served page.
Common Questions About Home Additions
The timeline depends on the scope, but most additions are completed within several weeks to a few months. We provide a detailed project schedule during your planning phase.
You receive complete architectural drawings, renderings, and detailed pricing before construction begins.
Some disruption is inevitable, but we plan carefully to minimize inconveniences. Our team keeps work areas tidy, provides advance notice for major milestones, and communicates with you regularly.
We have financing options available for homeowners who wish to explore them
Absolutely. Our design-build approach means you work with the same expert team from initial concept through final completion.
Start Planning Your Home Addition
If you are ready to add space to your home, we’re ready to help. We offer free design consultations to help you understand what’s possible and how the process works. Reach out today to schedule your consultation and take the first step toward a home that works better for you.
Customer Stories
We recently had our home remodeled by the team at Frey Construction. The entire Frey team was professional, experienced, courteous and patient. The final result was exactly how we had envisioned. If we have other home remodeling projects in the future, we would certainly not hesitate to call Frey Construction again.
I am very pleased with Frey Construction. They replaced my roof and gutters. The workers were fast and efficient, and they were always courteous and professional. The office staff was patient and helpful and I appreciated all the time they spent to answer my questions. The quality of work is exceptional and they exceeded my expectations with the clean up afterwards. I highly recommend them!
Frey has done a lot of work for us and the quality is always great. My favorite thing about them is that they are extremely responsive and professional with great customer service. We've previously worked with them on siding and gutters. Most recently I had some windows replaced. They were very helpful and assisted in removing a wall-mounted shelf, which I consider an above and beyond service.





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