Attic Insulation

Blown-in fiberglass or cellulose attic insulation is your highest-ROI renovation, returning over 100% at resale and paying for itself in energy savings within 2-4 years. For a typical house, installation costs $1,500-$3,500 and delivers an EPA-estimated 15% reduction in heating and cooling bills, saving $200-$600 annually in most climates. While it's invisible and unglamorous, it outperforms #5 Exterior Paint in cost-effectiveness because inspectors and buyers actively check insulation levels, and a home energy audit confirming R-49 attic insulation makes any house marketable. This single upgrade costs less than half of #6 Hardwood Flooring's average installation yet provides faster returns through guaranteed utility savings.