Hamilton Union Service

Yes. Hamilton Union Service is STAR certified with the California Bureau of Automotive Repair, so it can test vehicles the DMV directs to a STAR station, including gross polluters.

No. Hamilton Union Service is licensed as a Test & Repair station. This station can run your smog test and, if the vehicle fails, diagnose and repair it in the same shop.

Hamilton Union Service is open Monday 6 AM to 9 PM; Tuesday 6 AM to 9 PM; Wednesday 6 AM to 9 PM; Thursday 6 AM to 9 PM; Friday 6 AM to 9 PM; Saturday 6 AM to 9 PM; Sunday 6 AM to 9 PM. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Hamilton Union Service accepts walk-ins, so you can drive in without booking ahead.

Hamilton Union Service accepts Credit Card, Debit Card, NFC/Contactless.

Google lists the following accessibility features at Hamilton Union Service: wheelchair accessible entrance, wheelchair accessible restroom.

Hamilton Union Service has held a BAR smog license since 1989. You can verify the license status at bar.ca.gov.

Hamilton Union Service has not published a price on SmogCheckDeals. The Bureau of Automotive Repair puts the statewide average at $69.16 as of August 2026, about $65 for a 2000-or-newer vehicle and $73 for 1999-or-older, plus the $8.25 certificate fee. Call (408) 866-8363 for a quote.

Hamilton Union Service does not take online bookings here, but walk-ins are welcome. Call (408) 866-8363 to check the wait.

Staff at Hamilton Union Service speak English.

Bring the car, your registration or DMV renewal notice, and a way to pay. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.

Because Hamilton Union Service is a Test & Repair station, it can diagnose and repair the problem in the same shop, then run the free retest within 30 days. If the repair bill is steep, California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

The closest alternatives in Campbell are Premium Auto Repair Center (0.4 mi) and Integrity Automotive Service (0.4 mi). Both are listed further up this page with their ratings and hours.