Do You Need a Permit for a Retaining Wall in Pierce or Thurston County, WA? 2026 Guide
Quick answer: In both Pierce and Thurston County, most retaining walls 4 feet tall or shorter (measured from the bottom of the footing to the top of the wall) don’t need a building permit. Go taller than that — or shorter but holding back a slope, driveway, or structure close behind it — and you’ll…
