Do you need a permit to coat a garage floor in Caldwell?
Caldwell adopts the 2018 International Residential Code in City Code 12-01-01, and its local amendments in 12-01-21 leave the code's finish work exemption in place. Section R105.2 of that code lists "painting, papering, tiling, carpeting, cabinets, counter tops and similar finish work" as work that doesn't need a permit, and a coating on an existing garage slab falls under that kind of finish work even though floor coatings aren't named. Caldwell did delete the code's electrical and plumbing exemptions, so adding something like a floor drain or new outlets means a permit. Call the Caldwell Building Safety Division at (208) 455-3024 to confirm for your project.
Checked against Caldwell code in November 2026. See the rules for every Treasure Valley town.
Grinding dust and rinse water in Caldwell
Caldwell's stormwater code (13-01-03) makes any illicit discharge to a storm drain a violation and bans non-stormwater discharges except a short list, like lawn watering or pavement wash water with no detergents and no spills. Grinding slurry, coating residue and soapy wash water aren't on that list, so they need to be caught and thrown away, not rinsed into the gutter.
Getting the garage ready for us? Sweep or vacuum it out instead of hosing it into the street.
Quiet hours in Caldwell
Caldwell's noise code (07-13-03) bans loud noise between 11 p.m. and 7 a.m. that can be clearly heard inside a home or business 150 feet or more away. The noise chapter doesn't set separate construction hours or different weekend hours for a home project.
Winter roads and your garage floor
The City of Caldwell Street Department plows and sands streets inside city limits, starting full plowing at about 4 to 6 inches of snow and sanding intersections, hills, school streets and the hospital area before that. The city reported spreading sand, salt and liquid deicer on its streets in fiscal year 2025.
All of that rides into the garage on your tires and melts on the slab. The Federal Highway Administration says chemical deicers can make freeze and thaw damage to concrete worse, that surface scaling is the most common damage they cause on slabs, and that magnesium chloride and calcium chloride raise the most concern. A coated floor gives the melt a sealed, non porous surface to sit on instead of bare concrete, so you can squeegee it out the door.
New build in Caldwell?
Polyrez, the coating system we use, says new concrete needs to cure at least 28 days before it’s coated, and the slab, the air and the material all need to be between 50°F and 80°F while it goes down. The Federal Highway Administration also recommends letting new concrete dry at least 30 days before deicers hit it. Tell us your closing date and we’ll plan the install around it.
Working near Caldwell
We also coat floors in Nampa and Middleton. See every town we cover.