Motor Vehicle Division
Hours: 8 a.m. – 4:30 p.m. M-F
Fax: 303-413-7725 (Boulder office)
Fax: 303-413-7002 (Lafayette office)
Fax: 303-678-6126 (Longmont office)
Vehicles must pass an emissions inspection in order to be registered in Boulder County. Testing is required when a vehicle changes ownership (even if there is time left on the previous test) and for registration renewal, if indicated on the renewal notice.
The following vehicle types do not require emissions testing:
There are three situations where emissions requirements may temporarily be extended or waived: