Sunroom Cost Calculator
Price a sunroom. Choose the type and size and your region to see a cost range and per-square-foot price.
\u2600\ufe0f Get sunroom quotes from local pros
Get quotesThree-season vs four-season
A screened porch is the cheapest way to add outdoor living; a three-season sunroom adds glass and a roof; a four-season room is insulated and climate-controlled so you can use it year round \u2014 and costs the most.
How it’s calculated & sources
Cost = area (length × width) × per-sq-ft rate for the sunroom type. Estimates are then scaled by a regional construction-cost factor for your area (U.S. average = 1.00).
Cost ranges from 2025–26 national home-improvement data (HomeAdvisor, Angi, Fixr and industry guides); regional factors approximate RS Means-style city cost indices. National average sunroom \u2248 $50,000 \u2014 three-season $80\u2013230/sq ft, four-season $200\u2013400/sq ft.
Results update as you type and are estimates, not a quote — site conditions, permits, and finishes move the final number. Verify with local pros.
Worked example
A 14×12 three-season sunroom (168 sq ft) runs about $28,600 nationally (~$170/sq ft).
Frequently asked questions
Three-season or four-season?
Three-season is cheaper but unheated; four-season is insulated and usable year round.
Does it add home value?
Sunrooms typically recoup part of their cost and add usable living space.
How does region change it?
The estimate scales by a regional cost factor for your area.
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