C-61 Limited Specialty License and D-Subcategories
The C-61 Limited Specialty classification is the CSLB's catch-all for trades that do not fit into the standard A, B, or C license categories. It covers roughly 30 distinct specialties, each identified by a D-subcategory code. C-61 contractors make up about 4% of all licensed contractors in California.
How the C-61 Differs from Other Licenses
Two things set the C-61 apart. First, applicants only need to pass the Law and Business exam. There is no separate trade exam for C-61 subcategories. This makes it a faster path to licensure for tradespeople in niche fields.
Second, the license is restricted to the specific field and scope of operations listed on the license certificate. A C-61/D-28 (Doors, Gates, and Activating Devices) contractor cannot do plumbing. A C-61/D-34 (Fencing) contractor cannot do electrical work. The scope is whatever the CSLB approved on your application, and nothing more.
The four-year experience requirement still applies. You need four years of journey-level experience in your specific specialty, documented and verifiable, just like any other classification.
All D-Subcategories
Below is the complete list of C-61 subcategories currently recognized by the CSLB. Definitions were developed by CSLB staff and approved by the Board.
Building and Structural
- D-3: Awnings – Installation, modification, and repair of aluminum, metal, vinyl, or canvas awnings and patio covers. Does not include patio enclosures or carports.
- D-6: Concrete Related Services – Installation of reusable steel concrete form sections and interlocking precast pavers.
- D-10: Elevated Floors – Installation of wood or metal framed elevated computer flooring systems. Does not include mezzanine construction.
- D-24: Metal Products – Installation, modification, or repair of aluminum or vinyl storm doors and windows, metal gutters, metal awnings, and similar products.
- D-28: Doors, Gates, and Activating Devices – All types of residential, commercial, or industrial doors including overhead, sliding, automatic revolving, and power-activated doors. Includes low-voltage electronic hardware and access control devices.
- D-34: Prefabricated Equipment – Installation of prefabricated equipment such as bleachers, grandstands, and similar structures.
- D-42: Non-Electrical Sign Installation – Installation and repair of non-electrical signs and sign structures.
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Mechanical and Equipment
- D-4: Central Vacuum Systems – Installation, modification, maintenance, and repair of central vacuum systems and pneumatic tube dispatching systems.
- D-16: Hardware, Locks, and Safes – Installation, alteration, and repair of door and window locks, built-in safes, and vaults.
- D-17: Machinery and Pumps – Installation, removal, modification, and repair of pumps, conveyors, cranes, dock levelers, and handicap lifting equipment. Does not include construction of buildings or roof structures for this equipment.
Surfaces and Finishes
- D-12: Synthetic Products – Synthetic countertops and wall coverings, fiberglass and epoxy products, bathtub and enamel refinishing, reservoir liners, vinyl pool relining, and synthetic turf.
- D-30: Papering and Wallcovering – Application of decorative wall coverings including paper, vinyl, cork, burlap, and carpet-type wall coverings. Does not include painting or paneling.
- D-39: Sand and Water Blasting – Cleaning exterior surfaces using sand or water blasting methods.
- D-52: Window Coverings – Installation, repair, and maintenance of window coverings including blinds, shades, shutters, and drapery hardware.
Site and Outdoor
- D-9: Drilling – Core and post-hole drilling, horizontal drilling, drilling for charge placement and blasting, site dewatering, and oil well drilling. Does not include water well drilling.
- D-31: Pole Installation and Maintenance – Installation and maintenance of wood, metal, or concrete poles for utility and communication lines.
- D-34: Fencing – Installation and repair of all types of fences, including wood, metal, vinyl, and chain link.
- D-35: Pool and Spa Maintenance – Maintenance and repair of swimming pools and spas. Does not include construction of new pools (which requires a C-53 license).
- D-38: Sand and Water Blasting – Exterior surface preparation by abrasive or pressure methods.
- D-40: Service Station Equipment and Maintenance – Installation and repair of fuel dispensing equipment, hydraulic lifts, and related service station equipment.
- D-41: Siding and Decking – Installation of exterior siding, wooden decks, and related handrails. Does not include construction or installation of covers or enclosures.
- D-49: Tree and Palm – Planting, maintenance, and removal of trees and palms, including pruning, stump grinding, and guying. Note: D-49 holders must carry workers' comp even with zero employees.
- D-50: Trenching – Trenching for foundations, pipelines, conduit, and related work.
Specialty Services
- D-2: Cable/Satellite TV – Installation and maintenance of cable and satellite television systems.
- D-8: Weatherization and Energy Conservation – Installation and repair of energy conservation products. Does not include insulation, glazing, or HVAC work.
- D-15: Hydroseed Spraying – Application of seeds through liquid media to prepared or contoured surfaces.
- D-21: Machinery and Pumps – See D-17 above (some carriers cross-reference this code).
- D-36: Construction Cleanup – Cleanup and removal of construction debris from building grounds and structures.
- D-41: Siding and Decking – See listing under Site and Outdoor above.
- D-56: Trenching – See D-50 above (alternate code reference).
- D-62: Air and Water Balancing – Installation of devices and performance of work related to specified airflow in heating and cooling systems or waterflow in piping systems.
- D-64: Non-Specialized – Installation, modification, maintenance, and repair of products and installations that do not fall within any other specialty classification.
Scope Limits
A C-61 license restricts you to the specific D-subcategory endorsed on your certificate. You cannot do work outside that scope, even if it seems closely related. A D-41 (Siding and Decking) contractor cannot build a patio cover. A D-35 (Pool Maintenance) contractor cannot build a new pool.
However, other specialty contractors (those with standard C classifications) can perform work that falls within a C-61 scope, as long as it is consistent with established industry practice and related to their own classification. A C-36 plumber can install a pool pump if that is consistent with plumbing trade practice.
Adding a C-61 to an Existing License
If you already hold a California contractor license, you can add a C-61 subcategory. You will need to submit documentation of experience in the specific specialty and pass the Law and Business exam if you have not already. Since there is no trade exam, the process is faster than adding a standard C classification.
Browse all California contractor license classifications in our classification directory.
Starting a Contracting Business?
Most California contractors operate as an LLC or sole proprietorship with a DBA. Form your business entity before applying for your CSLB license.