Sunroom & 3-/4-Season Room Cost in Minnesota (2026)
Sunroom & 3-/4-Season Room Cost in Minnesota
What sunrooms, screened porches, and three- and four-season rooms cost in the Twin Cities.
What does a sunroom or porch cost in the Twin Cities? Here are typical 2026 ranges from Three Rivers Contracting, a licensed Minnesota general contractor (MN #BC760638). The biggest driver is whether you want a three-season space or a fully insulated four-season room.
What Drives Sunroom Cost
Three- vs Four-Season
Insulation, HVAC, and efficient glass
Foundation & Footings
Frost-depth footings or building over a deck
Roof Tie-In
Matching your existing roofline
Glass Area & Doors
More glazing and larger sliders
Electrical & Heat
Outlets, lighting, and a heat source
Sunroom & Porch Cost by Type (2026)
| Type | Typical range | Use |
|---|---|---|
| Screened porch | $25,000–$45,000 | Spring–fall, bug-free |
| Three-season room | $30,000–$55,000 | Spring–fall, glass or screen |
| Four-season room | $60,000–$120,000+ | Year-round insulated living space |
3-Season vs 4-Season: The Cost Trade-Off
Frequently Asked Questions
Three-season rooms run $30,000–$55,000 and four-season rooms $60,000–$120,000+ in 2026; screened porches start lower.
It is fully insulated with HVAC and energy-efficient glass for year-round comfort.
A four-season room adds finished, heated square footage, which typically adds resale value.
Often yes, if the footings and framing can carry the added load.
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