Sunrooms & 3-Season Rooms: Adding Living Space in Minnesota

In a state where we wait all year for warm weather, a sunroom lets you enjoy every minute of it — bug-free and out of the wind. Here’s how to add one and what to consider.

3-season vs. 4-season rooms

A 3-season room is designed for spring through fall — lots of glass, comfortable most of the year, but not fully heated for deep winter. A 4-season room is insulated and climate-controlled for year-round use, at a higher cost.

What they add

A sunroom expands your living space and your enjoyment of the yard, and can add resale appeal — all without the cost of a full home addition.

Best uses in Minnesota

Morning coffee, a reading nook, a plant room, a spot to watch summer storms roll in, or a dining space that feels like it’s outdoors. Our short, treasured warm season is exactly what these rooms are built for.

What to plan

• Foundation and how it ties into the house
• Window quality and sun orientation
• Whether you want optional heating for shoulder seasons

Three Rivers Contracting is a licensed Minnesota general contractor (MN GC #BC760638), rated 4.9★ across 72 Google reviews, BBB A+ accredited, and certified for GAF, Owens Corning, Andersen and Pella. We self-perform our work. Explore our 3-season room and outdoor living services.