The cost to build a sunroom averages around $47,000, but the price can range from $5,000 to $140,000 for high-end, custom projects. On a square-foot basis, you can expect to pay between $150 and $300. The total cost is influenced by the sunroom's type, size, materials, and other factors.
Common types and their typical costs include:
Three-season room: $10,000–$40,000
Four-season room: $25,000–$80,000
Glass solarium: $30,000–$75,000
Conservatory or garden room: $5,000–$80,000
Atrium: $10,000–$35,000
Prefabricated sunroom: $5,500–$30,000
Additional cost factors include permits, site preparation, foundation type, insulation, roofing, windows, doors, electrical work, heating and cooling systems, and your geographic location.