three season room

Three Season Sunroom Builder

A beautiful, naturally-lit addition that will effectively trap cool and warm air.


If you’re considering adding a three-seasons room to your home, check out some of our past projects to gain some inspiration!


If you’re looking to add a space in your home where you can comfortably restore your connection with nature from spring through fall, a Milwaukee three-season room is the perfect sunroom addition for you. For 50 years, S.E. Wisconsin Sunrooms has been improving the value of homes building expert three-seasons room installations. As a member of the National Association of the Remodeling Industry, we hold ourselves to a high standard of quality. All of the materials we use are energy efficient and our crews are highly skilled sunroom builders, resulting in a finished product that you’ll be completely satisfied with.

Using EcoGreen building systems, we’ll craft your Milwaukee Wisconsin 3 seasons room for maximum energy efficiency. From the flooring to the insulated structure of the roof, your new addition will be equipped to enable you to comfortably enjoy the outdoors during the rainy weather of spring or the chilly breezes of fall. Additionally, all of the glass we use in our windows is made with Low E materials.

Start building your Milwaukee sunroom now! Contact S.E. Wisconsin Sunrooms to talk to one of our friendly representatives. Give us a call or fill out our online form to schedule a design consultation and receive your free quote today!


We only hire the most experienced and skilled contractors to install our sunrooms. Each individual is well trained in the art of installing three-seasons rooms and will quickly build your addition with incredible efficiency. They’ll work diligently to not interrupt your day-to-day routine, only coming to you with important project updates.

We give you a wide selection of options when designing your three-seasons room addition. Want picture windows that will give you a full view of the great outdoors? We can install them for you. How about elegant French doors to place at your entryway? Not a problem! You’ll also have you choice in roofing options, including studio, cathedral and integrated styles. Some additional design options we offer include:

  • Lighting Accents
  • Ceiling Fans
  • Window Treatments
  • Phone/Internet Connections
  • Opaque Wall Sections
  • “Doggy Door” Panels
  • Electrical Outlets
  • HVAC Systems
  • And More!

A COST COMPARISON: Three Season vs Four Season Sunrooms

At S.E. Wisconsin Sunrooms, we understand that the distinction between a three-season and four-season room is essential when considering your home addition. A three-season room offers protection from weather elements such as rain, snow, dust, dirt, and wind without temperature control features. In contrast, our four-season rooms are engineered to maintain comfortable indoor temperatures year-round through insulation and integrated heating and cooling systems.

Historically speaking, there was a significant cost disparity between these two options due to differing electrical codes influencing their designs. However, advancements have leveled the playing field in terms of price; both types now share similar foundation requirements and electrical standards with only one notable difference: the grade of windows installed.

Our experience shows that customers in Wisconsin increasingly prefer investing in four-season rooms – evidenced by the shift from 70% preference for three season rooms down to just a 20% cost difference. This trend aligns with our advice to clients: it's worth delaying construction until you can allocate an additional $3-4k into your budget for a transition from a traditional three season space into one suitable for all seasons if necessary.