SUSTAINABLE REMODELING: Data Sources & Assumptions

Category Sustainable Remodel Traditional Remodel Source / Rationale
Energy Savings (10 yrs) 30% reduction 10% U.S. DOE & ENERGY STAR: Sustainable upgrades can reduce energy use by 20–30%.
Resale Value Increase 15% average boost 5% NAR: Green-certified homes often sell for 5–15% more than non-certified homes.
Maintenance Costs (10 yrs) 20% savings Baseline (0%) BuildingGreen.com: Durable, sustainable materials require less upkeep.
Indoor Air Quality 90% improvement potential 60% EPA & GREENGUARD: Low-VOC finishes and better filtration improve air health.
Water Use Reduction 50% savings 10% EPA WaterSense: Efficient fixtures and landscaping reduce water use significantly.