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Specialty Class D Types

Scope of Work

Antennas attached to buildings or freestanding.  This includes antenna towers.  Not allowed to alter any structural members of a building.  All work to be done under on site supervision of Class D Antenna Installer Supervisor Certificate holder.

Testing 

No test required

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Building Insulation.  All work to be done under on site supervision of a Class D- Building Insulation Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Combined excavating, shoring, piles, caissons and drilled shafts and cast-in-place concrete. Including the placement of reinforcing steel, bar supports and welded wire fabric for reinforced concrete construction.  All work to be done under the on site supervision of a Class D-Concrete and Foundations Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade. 

Please Include documentation for both flatwork & foundation experience.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Placement of reinforcing bars, pre or post tensioning steel, bar supports and welded wire fabric for reinforced concrete construction.  All work to be done under onsite supervision of a Class D-Concrete Reinforcing Steel Placers Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Installation of curtain walls and storefronts.  All work to be done under the onsite supervision of a Class D – Curtain Walls Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

 

Scope of Work

Work limited to town houses, one and two family dwelling unit buildings not requiring any structural alterations.  This certificate is only required if the work is being done in a landmark district.  All work to be done under on site supervision by a Class D – Custom Size Window Replacement Supervisor Certificate holder.

Note:  The installation of curtain walls, glass block or storefronts is not allowed under this license.  The replacement and installation of windows in commercial buildings is not allowed under this license.

Testing 

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized

Once a Certificate has been issued the Certificate holder can then apply for a Contractor License.

License Applications will not be accepted until Supervisor Certificates have been approved.

Scope of Work

This Certificate is required for a Sewer Contractor License, if the company does not employ a State of Colorado licensed Master Plumber.

Testing

No test required

Minimum Experience Required To Apply

Applicant must have a minimum of two years of drain laying field experience under the supervision of a State of Colorado licensed Master Plumber or Denver Certified Drain layer Supervisor.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Installation of all drywall

Testing

No test required

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Installation of fence structures.  All work to be done under the on site supervision of a Class D-Fence Structures Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade. 

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Installation of fire doors.  All work to be done under onsite supervision of a Class D - Fire Door Installer

Supervisor Certificate Holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Application of fireproofing materials. All work to be done under the onsite supervision of a Class D – Fireproofing Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Construction of handicap accessible ramps only.  All work to be performed under the supervision of a Class D-Handicap Accessible Ramp Installer Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Construction of High Piled Storage Racks.  All work shall be performed under the on site supervision of a Class D - High Piled Storage Supervisor Certificate Holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Contractors are only allowed to do this type of work for single family and duplex residences.  All work to be done under the on site supervision of a Class D – Inside tap and back flow preventor Supervisor Certificate Holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Installation of all lathing, plastering and drywall including the installation of nonbearing partitions, stucco or exterior texturing of buildings or structures and suspended ceiling systems. 

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Installation of all lathing, plastering and drywall including the installation of nonbearing partitions, stucco or exterior texturing of buildings or structures. Only allows this type of work for single family and duplex residences.  All work to be done under on site supervision of a Class D –Supervisor Certificate Holder. 

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Laying and forming all types of masonry.  All work to be done under the onsite supervision of a Class D – Mason Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Installation of material handling equipment.  All work to be done under on site supervision of a Class D – Material Handling Equipment Installer Supervisor Certificate holder.

Testing

No test required.

Minimum Experience d To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Installation of metal roofs only.   All work to be done under the onsite supervision of a Class D Metal Roof Installer Supervisor Certificate.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade. 

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

This is for single-family, duplex, or IRC townhome properties for NON-BEARING and NON-STRUCTURAL WORK ONLY and does not allow the alteration or installation of load-bearing or structural elements.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in framing, insulation, and drywall in residential properties.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Including supporting foundation and attachment to buildings. This license allows construction of open roof structure and NOT shade devices or closed roof structures. Work to be done only on single-family and duplex dwellings.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.  

Scope of Work

Erection of outdoor stages, mobile stages, platforms for reviewing stands.   All work to be done under the on site supervision of a Class D Open Mobile Stage or Platform Installer Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.  

 

Scope of Work

Installation of overhead doors.  All work to be done under on site supervision of a Class D – Overhead Door Installer Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

 

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

 

 

 

 

 

Scope of Work

Installation of power operated doors.  All work to be done under on site supervision of a Class D – Power Operated Door Installers Supervisor Certificate holder

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

The erection of pre-cast concrete structural units.  All work to be done under on site supervision of a Class D - Pre-cast concrete building units Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade. 

Application Form and Required Documents

 

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

 

 

 

Scope of Work

Installation of prefabricated patios, carports, canopies, and awning only.  All work to be done under the on site supervision of a Class D - Prefabricated Patios, Carports, Canopies and Awnings Supervisor Certificate Holder.

Testing

 

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

 

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

 

 

 

Scope of Work

Installation of retaining walls.  All work to be done under onsite supervision of a Class D – Retaining Walls Supervisor Certificate holder.   

Testing

No test required.

Minimum Experience Required To Apply 

Two (2) years of field experience in the respective trade.

 

 

 

Application Form and Required Documents

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

 

 

 

 

 

Scope of Work

Installation of commercial and residential roof coverings, including valleys, gutters, downspouts and waterproofing.  All work to be done under on site supervision of a Class D - Roof Covering and Waterproofing Supervisor Certificate holder.

Testing

Not test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade. At least 75% of the installation projects must be on commercial buildings. 

Requires experience in all aspects of residential and commercial roofing systems. 

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Installation of residential only roofing systems.  All work to be done under on site supervision of a Class D - Roofing-Shingles Only Supervisor Certificate holder.

Testing

Not test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade. Requires experience in all aspects of residential roofing systems. 

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Erection of Scaffolding. All work to be done under on site supervision of a Class D – Scaffold Erection Supervisor Certificate holder.

Testing

No test required.  

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

 

 

 

Application Form and Required Documents

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

 

 

 

Scope of Work

Wall and ground signs not exceeding 200 square feet or exceeding 10 feet in height. 

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade. 

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

To, install, erect or maintain all types of signs unless exempt by Section 130.3.

Testing  

No test required.

Minimum Experience Required To Apply

  • Five (5) years of experience in the sign industry in the erection and sheet metal phases for all types of signs, including signs over 200 square feet in size and over 10 feet in height.
  • Notarized letter(s) must show WHAT, WHEN AND WHERE you gained the necessary experience for each project
    • List exact duties, projects performed, and equipment operated.
    • Give exact start and end dates (month and year) and addresses for each project. Projects should have been completed within the last ten (10) years.
    • List as many projects needed in order to cover the required amount of experience. 

Application Form and Required Documents 

Scope of Work

Installation of security bars, grills and grates. All work to be done under on site supervision of a Class D – Security Bars, Grills, & Grates Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

 

 

 

Scope of Work

Installation of siding, gutters and downspouts. All work to be done under on site supervision of a Class D – Siding Supervisor Certificate holder. 

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

Scope of Work

Fabrication and erection of structural metal members for all buildings or structures.  All work to be done under on site supervision of a Class D Structural metals Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

 

 

 

 

 

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

 

 

 

Scope of Work

Installation of swimming pools as required by the Denver Building Code. All work to be done under the on site supervision of a Class D – Swimming Pools Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply 

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

 

 

 

 

Scope of Work

Allows the setting up of temporary office buildings.  All work to be done under onsite supervision of a Class D – Mobile Building Installer Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

Scope of Work

Interior nonbearing and nonstructural work only.  Does not allow the alteration or installation of load-bearing or structural  elements.  All work to be done under on site supervision of a Class D – Tenant Finish (Commercial) Supervisor Certificate holder. 

Testing

Test not required.

Minimum Experience Required To Apply

Requires four years of field experience in commercial tenant finish work.  Experience must include:

  1. Type of Tenant finish work done in a retail establishment, and or office, etc. (I.e.drywall, framing, supended acuostical ceilings, fire rated wall(s))

  2. Names or type of commercial building in which tenant finish work was performed and dates work was started and completed.

Application Form and Required Documents

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.

Scope of Work

Waterproofing and Damp proofing.  All work to be done under the supervision of an on site Class D – Waterproofing/Damp proofing Supervisor Certificate holder.

Testing

No test required.

Minimum Experience Required To Apply

Two (2) years of field experience in the respective trade.

Application Form and Required Documents

 

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

 

 

 

 

Scope of Work

To install or repair service lines and appurtenances from the corporation cock on the main up to and including:  The first valve downstream of the meter, for an inside meter setting; or the first valve inside the structure, for an outside meter setting. 

 

This license shall not permit the installation of the water meter.  All work shall be done under onsite supervision of the holder of a Water Service Supervisor Certificate or a State of Colorado Master Plumbers License.

Testing

No test required.

Minimum Experience Required To Apply

Requires two years of field experience. A State of Colorado Division of Fire Safety "Registered Underground Fire Line Contractor" certificate or a Denver Class D drain layer supervisor certificate may be accepted in lieu of notarized letters.

Application  Form and Required Documentation

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized. 

 

 

Scope of Work

The fabrication and erection of wood framing for all types of buildings.  All work to be done under on site supervision of a Class D – Wood Framing Supervisor Certificate.

Testing

No test required.

Minimum Experience Required To Apply

 

Two (2) years of field experience in the respective trade.

 

Application Form and Required Documents

 

 

 

 

 

Mailed applications must have both the affidavit and the copy of a secure and verifiable identification notarized.