What type of sunroom or enclosure are you interested in?

Three-season sunrooms cost $8,000–$25,000. Four-season (insulated, HVAC-connected) sunrooms cost $20,000–$60,000+. Screen enclosures are the most affordable at $5,000–$15,000. Cost depends on size, foundation type, glass quality, and whether HVAC is extended into the space.

Sunrooms return 40–70% of their cost at resale, depending on quality. Four-season sunrooms with HVAC add more value than three-season or screen-only enclosures. In warmer climates (Southeast, Southwest), sunrooms are especially desirable and may return higher percentages.

Almost always yes. Sunrooms are considered additions and require building permits in virtually every jurisdiction. Four-season sunrooms may also require plumbing and electrical permits if HVAC, lighting, or outlets are included. Your contractor should handle the permitting process.

A three-season sunroom uses single-pane glass and no insulation — comfortable spring through fall but too cold in winter. A four-season sunroom has insulated walls, double/triple-pane glass, and HVAC — usable year-round as additional living space. Four-season costs roughly 2x more.