Attic Insulation Cost in California: Complete 2026 Guide
Average Cost in California $1,500 – $9,000 For a typical 1,500–2,000 sq ft attic · Updated July 2026 Low: $1,500 Average: $4,500 High: $9,000+ Updated July 2026 The average attic insulation cost in California ranges from $1,500 to $9,000 for a typical 1,500-2,000 sq ft attic, with installed pricing running $0.80 to $4.50 per square…