Building Division

Licensed Contractors Serving Boulder County

Who is a building contractor?

A contractor is anyone who engages in any type of work for compensation for which a building permit is required or who directs or supervises such work. People are not considered to be a contractors are: the property owner, a laborer working under the supervision of a contractor, a person who is performing labor or repair work on their own property, an employee of the property owner who performs full-time maintenance or repair work on the property owners property, and state-licensed plumbers or electricians.

The various types of licenses are:

• Class A: Commercial or Residential Construction
• Class B: Residential Work, Commercial remodeling or tenant finish
• Class C: One & two-family residential
• Commercial Mechanical: Commercial mechanical installations and repair
• Residential Mechanical: Residential mechanical installations and repair
• Roofing: New roofing, re-roofing
• Class M: