---
title: "Independent Structures, Inc. — Clean Truck Check, Redding, CA"
description: "Independent Structures, Inc. in Redding, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address…"
url: "https://ctcfinder.com/tester/independent-structures-inc-redding/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Independent Structures, Inc.

Clean Truck Check tester in Redding, CA (Shasta County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 8490 Hartmeyer Ln, Redding, CA 96002 |
| County | Shasta County |
| Phone | (530) 604-1957 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Independent Structures, Inc. can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Clean Truck Check Redding in Redding, about 1 mile away. [See listing](https://ctcfinder.com/tester/clean-truck-check-redding-redding/).

## Clean Truck Check testers in Shasta County

Independent Structures, Inc. is one of 18 testing businesses in Shasta County on CARB's public tester list. 16 of them offer mobile testing and 8 do smoke opacity tests. In Redding itself there are 9 listed businesses, 8 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Independent Structures, Inc. offer mobile Clean Truck Check testing?

Yes. Independent Structures, Inc. says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Independent Structures, Inc. test a 2012 or older diesel truck?

Independent Structures, Inc. does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Clean Truck Check Redding](https://ctcfinder.com/tester/clean-truck-check-redding-redding/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Independent Structures, Inc. charge for a Clean Truck Check?

Independent Structures, Inc. has not published prices with us; call (530) 604-1957 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Independent Structures, Inc. a CARB-credentialed tester?

Independent Structures, Inc. appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Clean Truck Check Redding](https://ctcfinder.com/tester/clean-truck-check-redding-redding/)** — 875 Hartnell Ave, Redding, CA 96002 — (530) 351-3987 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[David Duree](https://ctcfinder.com/tester/david-duree-redding/)** — Redding, CA 96002 — (530) 356-3945 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Jiffys Truck Rental](https://ctcfinder.com/tester/jiffys-truck-rental-redding/)** — 875 Hartnell Ave, Redding, CA 96002 — (323) 313-5137 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[McCracken Equipment Repair LLC](https://ctcfinder.com/tester/mccracken-equipment-repair-llc-redding/)** — 8710 Quail Valley Dr, Redding, CA 96002 — (530) 338-9338 — 1 mi. Services: mobile testing, OBD testing.
- **[Travel Centers of America](https://ctcfinder.com/tester/travel-centers-of-america-redding/)** — Redding, CA 96002 — (530) 221-4760 — 1 mi. Services: mobile testing, OBD testing.
- **[Anderson Smog Shop](https://ctcfinder.com/tester/anderson-smog-shop-anderson/)** — 2374 North St, Anderson, CA 96007 — (530) 378-5558 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.