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Sunroom Cost Calculator

Use our Sunroom Cost Calculator to estimate construction costs for your sunroom project. Whether you're planning a three-season room, four-season room, or solarium, get accurate estimates for materials, labor, and total project costs based on size, frame material, window type, and features.

Sunroom Construction Cost Guide

Sunroom costs typically range from $100-220+ per square foot depending on type and materials. A basic 12x16 three-season aluminum sunroom might cost $19,200-26,880, while a premium 16x20 four-season wood solarium could reach $51,200-84,480.

Sunroom Types

  • Three-Season: Unheated, used spring through fall; least expensive option
  • Four-Season: Fully insulated and heated; usable year-round; 50% more than three-season
  • Solarium: All-glass structure with maximum light; premium option; twice the cost of three-season

Frame Material Comparison

  • Aluminum ($100-140/sq ft): Most affordable, low maintenance, good for three-season
  • Vinyl ($120-160/sq ft): Better insulation than aluminum, energy efficient
  • Wood ($140-180/sq ft): Traditional look, excellent insulation, requires maintenance
  • Fiberglass ($160-220/sq ft): Strongest option, best for large spans, premium price

Major Cost Factors

  • Size: Most sunrooms range from 144 sq ft (12x12) to 480+ sq ft (20x24)
  • Foundation: Concrete slabs are standard; full basements add significantly to cost
  • Windows: Triple-pane and Low-E coatings increase energy efficiency and cost
  • Electrical: Basic lighting and outlets vs. full smart home features
  • HVAC: Extending existing systems vs. standalone heating/cooling
  • Permits: Usually $500-2000 depending on local requirements

Planning Considerations

  • Face south or southwest for maximum winter sun and year-round use
  • Consider seasonal sun angles and shade patterns
  • Plan for adequate ventilation to prevent overheating in summer
  • Choose appropriate glass for your climate - tinted in hot areas
  • Factor in long-term energy costs for four-season rooms
  • Check HOA restrictions and local building codes early

Cite this page as:

Daniel, P. Sunroom Cost Calculator. Available at: https://constructioncalculators.com/sunroom-cost-calculator/. Accessed: October 25, 2026.