How to read this table
Every figure is a national planning range, not a bid — the low and high are summed independently from real line items, so the band reflects material grade, regional labor, and scope variation. Your ZIP code can move any number 10–35% either way; click through to a calculator to price your exact size, material, and region, and to sanity-check a contractor quote against the band. Figures were last derived on 2026-07-30 from the live calculator data. For the headline findings — median project cost, the labor-vs-materials split, category medians, and regional variation — see the 2026 Home Improvement Cost Index, plus the methodology and sources.