Contractor License Types
The City of Longmont requires contractors to obtain the appropriate license before performing construction or trade work.
General Contractor Licenses
Class A License – A Class A license entitles the licensee to contract for the construction, alteration or repair of any type or size of building or structure permitted by the adopted building code except electrical, plumbing, mechanical, fire extinguishing and elevators unless licensed to do such work under a specialty trade license. A Class A license holder can demolish any building, structure or portion thereof when rebuilding on-site.
Class B License – A Class B license entitles the licensee to contract for the construction, alteration or repair of any type or size of building or structure other than those classified as Type I-A or Type II-A, permitted by the adopted building code, except electrical, plumbing, mechanical, fire extinguishing and elevators unless licensed to do such work under a specialty trade license. A Class B license holder can demolish any building, structure or portion thereof when rebuilding on-site.
Class C License – Â Class C license entitles the licensee to contract for the construction, alteration or repair of one- and two-family dwellings or townhouse dwellings three stories or less in height, permitted by the adopted building code, including accessory buildings. A Class C licensee may demolish buildings, structures or portions thereof when rebuilding on-site.
Trade-Specific Contractor License
Mechanical – This license entitles the holder to install, add to, alter or repair warm-air heating, venting, evaporative and refrigeration cooling, exhaust systems and their appurtenances, hot water systems, process piping, refrigeration systems and related appurtenances.
Electrical – No person shall receive a permit to engage in the electrical installation wiring, appliance, or electrical apparatus of any nature, kind or description (except central stations, power houses, or substations) for the purpose of transmitting or utilizing electric current for light, heat, power, or electrical signal systems or other purposes inside of or in connection with any building or buildings without an electrical contractor’s license from the State of Colorado.
Plumbing – In order to contract for the installation, altering, or repairing of plumbing fixtures and apparatus of any kind or nature a person must register with the State of Colorado as well as with the Division of Building Inspection. This registration shall include: applicant name, place of business, the Master Plumber’s name and license number.
Specialty Contractor License
Class D License – A Class D specialty contractor’s license entitles the licensee to contract for labor or for labor and materials involving only one trade as defined below. A Class D licensee may be licensed to perform more than one such specialty up to a maximum of two Class D licenses. No test is required to obtain a Class D license.
- D-1: Drywall. The installation of drywall including fire resistance-rated assemblies (includes the installation of nonbearing partitions).
- D-2: Roof covering and waterproofing. Installation of roof coverings including valleys, gutters and downspouts, waterproofing and damp-proofing.
- D-3: Masonry and fireplaces. Laying and forming all types of masonry.
- D-4: Concrete foundations and caissons. Installation of foundations and caissons.
- D-5: Wood framing. The fabrication and erection of wood framing for all types of building.
- D-6: Swimming pools and spas. The installation of swimming pools and spas.
- D-7: Structural metals. The fabrication and erection of structural metal for all types of buildings or structures, excluding the complete construction of a building.
- D-8: Precast concrete building units. The erection of precast concrete structural units for all types of buildings and structures.
- D-9: Prefabricated metal patios, carports and awnings. The installation of prefabricated metal patios, carports and awnings.
- D-10: Siding. The installation of siding on new or existing buildings or structures.
- D-11: Elevator. The installation of elevators, escalators or dumbwaiters in existing or new construction buildings or structures.
- D-12: Demolition. The demolition of buildings or structures or portions thereof.
- D-13: Moving. To prepare and move all types of buildings or structures.
- D-14: Fire sprinkler. The installation of all types of fire-extinguishing systems.
- D-15: Low-voltage. The installation of low-voltage fire alarm, communications and data cable.
- D-16: Lawn sprinkler. The installation of lawn sprinkler systems together with backflow prevention devices.
- D-17: Signs. To fabricate, erect, install, remodel, repair and maintain all types of signs.
- D-18: Manufactured home installer. The installation of manufactured homes, inclusive of all but electric utility connections and deck or porch additions, to manufactured homes.
- D-19: Replacement windows including glass and glazing. The installation of all types of glazing in residential, commercial and industrial buildings including skylights, store fronts, structural glazing and glass curtain walls.
- D-20: Other. Any other specialty trade not otherwise identified.
- D-21: Fence. The fabrication and erection of fencing (except masonry) around all types of buildings.
- D-22: Insulation. The installation of all types of insulation products and systems.
- D-23: Gas fireplaces. The installation of gas fireplace systems using “B” vents including related gas piping.
- D-24: Commercial kitchen hood cleaning. To clean Type I kitchen hoods per adopted fire code.
