Inflation Guard endorsements lag real construction-cost inflation by 5-10 points
By Severance Calculator Editorial · Updated
The problem
Inflation Guard is a small endorsement that automatically increments Coverage A at each renewal — typically by 2-4% per year, indexed to a carrier-selected construction cost index that itself lags real-world materials and labor. From 2021 through 2024, BLS PPI for residential construction inputs rose 8-15% annually; lumber alone spiked 250% from April 2020 to May 2021 before partially retreating. Homeowners who saw their Coverage A tick up 3% per year felt protected but were silently accumulating a 20-40% gap over four years.
The data
A 2020 policy with Coverage A of $400,000 and 3% Inflation Guard would have Coverage A of $450,200 by 2024 renewal (1.03^4). Actual rebuild cost on the same home, indexed to BLS PPI series WPUSI012011 (residential construction inputs), rose from $400,000 to roughly $520,000-$560,000 in the same period — a $70,000-$110,000 shortfall despite Inflation Guard "working." The 2023 III Triple-I Insurance Economics Outlook documented this lag explicitly.
What to do
Treat Inflation Guard as a floor, not a ceiling. Re-run a rebuild cost calculator every 2-3 years (more often during inflationary periods) and request a Coverage A re-evaluation if your computed number exceeds your current Coverage A by more than 10%. Layer an Extended Replacement Cost endorsement (+25-50%) on top of Inflation Guard to absorb residual lag. Ask your carrier which index drives their Inflation Guard — Marshall & Swift/Boeckh and Verisk 360Value both publish quarterly updates that you can sanity-check.