No Iowa HHS-credentialed radon professional is headquartered in Grimes itself, but 1 credentialed Iowa contractor states on its own site that it serves this area — see below, each cited and dated.
Median paid, mitigation install · Des Moines metro
Built from real completed jobs, not advertised "starting at" prices —
every point comes from a customer stating what they paid on Angi or HomeAdvisor.
Metro-wide, not Grimes-specific: these prices come from contractors serving the whole Des Moines metro. Reviewers didn't say which city their job was in, so none of them is confirmed as a Grimes job.
We only count a price when a reviewer describes a finished job and states the amount. Ads,
"starting at" quotes, and add-on charges that aren't the full job total are excluded.
This metro clears our own bar for showing a number: 5+ price points from 3+ different contractors.
Most metros in Iowa don't clear it yet, and we don't show a number for those.