HomeCostGuide

Home Improvement Costs in Washington

Labor and material costs in Washington run 7% above the national average, based on our regional cost index.

Updated August 2026

Figures below apply our Washington regional index to each guide’s national range. The index comes from the U.S. Bureau of Economic Analysis’s Regional Price Parities by State — a real, sourced government figure, not a guess — though it measures overall regional price levels rather than construction costs specifically. See our methodology for how it’s used and its limitations.

Washington-adjusted cost ranges

ProjectNational rangeWA estimate
Bathroom Remodel$6,500–$25,000$6,950–$26,750
Kitchen Remodel$14,000–$48,000$15,000–$51,350
Roof Replacement$9,200–$18,500$9,850–$19,800
AC Replacement$4,800–$12,500$5,150–$13,400
Water Heater Replacement$1,300–$4,200$1,400–$4,500
Flooring Installation$2,800–$11,000$3,000–$11,750

Labor market

Above the national average, driven heavily by the Seattle metro; eastern Washington runs closer to the national baseline.

Climate considerations

Mild but consistently wet weather makes moisture management — proper flashing, ventilation, and mold-resistant materials — a bigger factor than temperature extremes.

Permitting

Seattle-area permitting is notably slower and more document-intensive than most of the rest of the state.

Common projects in Washington