Licensed Contractors in Rancho Cucamonga, California

Rancho Cucamonga has 968 licensed contractors registered with the California Contractors State License Board across 66 trade classifications. The most common specialties are Electrical Contractor (151), Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor (79), Plumbing Contractor (74). 459 contractors hold general contractor licenses (Class A or B).

All license data is sourced from the California Contractors State License Board (CSLB). Last data update: April 05, 2026.

Contractors by Trade

Building (501)
Electrical (181)
Limited (107)
Painting (93)
HVAC (92)
Plumbing (79)
Roofing (54)
Earthwork (52)
Landscaping (51)
Fire (29)
Welding (20)
Solar (8)
Lawrence W Rosine Co Active
License #173235 C-15 Rancho Cucamonga, CA Est. 1958
Secard Pools Active
License #233403 C-53 Rancho Cucamonga, CA Est. 1965
Air Conditioning Engineering Inc Active
License #236962 C-20 Rancho Cucamonga, CA Est. 1965
Montgomery Hardware Co Active
License #285746 B, C-28 +3 more Rancho Cucamonga, CA Est. 1973
Islas Excavating & Demo Active
License #287257 C-12, C-21 Rancho Cucamonga, CA Est. 1973
George Richard Acciari Active
License #288423 C-33 Rancho Cucamonga, CA Est. 1973
Baldy Electric Inc Active
License #318457 A, C-10 Rancho Cucamonga, CA Est. 1976
Maciel Masonry Llc Active
License #325465 C-29 Rancho Cucamonga, CA Est. 1976
C W Construction Inc Active
License #344027 B Rancho Cucamonga, CA Est. 1977
George Hall Electric Active
License #351837 C-10 Rancho Cucamonga, CA Est. 1978
Eddie Glenn Cunningham Active
License #354519 B Rancho Cucamonga, CA Est. 1978
J R N Engineering Active
License #357442 A Rancho Cucamonga, CA Est. 1978
Southland Pool Plastering Inc Active
License #365272 C-35, C-53 Rancho Cucamonga, CA Est. 1978
Universal Construction & Design Active
License #376868 B Rancho Cucamonga, CA Est. 1979
Goss Construction Co Inc Active
License #378377 A, B +3 more Rancho Cucamonga, CA Est. 1979
W.C. Walker Electric Active
License #379640 C-10 Rancho Cucamonga, CA Est. 1979
Bobs Roofing Active
License #384575 C-39 Rancho Cucamonga, CA Est. 1979
Contract Flooring Services Active
License #390875 C-15 Rancho Cucamonga, CA Est. 1980
Dakota Backflow Co Active
License #403777 C-36 Rancho Cucamonga, CA Est. 1981
Iverson Construction Active
License #409216 B Rancho Cucamonga, CA Est. 1981
Trl Systems Incorporated Active
License #413747 C-10, C-16 Rancho Cucamonga, CA Est. 1981
J & K Welding Active
License #419502 A, C-60 Rancho Cucamonga, CA Est. 1982
Swan Pools Active
License #421014 C-27, C-53 Rancho Cucamonga, CA Est. 1982
Bruno Mancinelli Active
License #421315 B, C-54 Rancho Cucamonga, CA Est. 1982
Seidel Enterprises Active
License #425246 C-10 Rancho Cucamonga, CA Est. 1982
C A Hofmann Construction Inc Active
License #431171 B, C-9 Rancho Cucamonga, CA Est. 1982
Verda Steel Corp Active
License #439318 C-51 Rancho Cucamonga, CA Est. 1983
Rc Air Llc Active
License #445508 C-20 Rancho Cucamonga, CA Est. 1983
Rancho Pacific Electric Inc Active
License #445897 C-10 Rancho Cucamonga, CA Est. 1983
Ideal Comfort Heating & Cooling Corporation Active
License #448740 C-20 Rancho Cucamonga, CA Est. 1983
H K Construction Inc Active
License #452543 B, C-8 Rancho Cucamonga, CA Est. 1984
La Rocque Better Roofs Inc Active
License #455773 ASB, B +1 more Rancho Cucamonga, CA Est. 1984
West Harrington Construction Co Inc Dba Harrington Construction Active
License #463572 B Rancho Cucamonga, CA Est. 1984
Owen Electric Inc Active
License #468212 C-10 Rancho Cucamonga, CA Est. 1985
Passage Supply Inc Active
License #471431 B Rancho Cucamonga, CA Est. 1985
Superior Tank Co Inc Active
License #472119 A Rancho Cucamonga, CA Est. 1985
Lance Communications And Cabling Active
License #475332 C-7 Rancho Cucamonga, CA Est. 1985
Donald G Lopiccolo Active
License #477410 B, C-20 +1 more Rancho Cucamonga, CA Est. 1985
Slim'S Key Shop Dba Sks Access Control Solutions Active
License #477495 C-10, D16 Rancho Cucamonga, CA Est. 1985
S C Painting Active
License #479509 C-33 Rancho Cucamonga, CA Est. 1985
Interior Woodwork Specialist Active
License #479690 C-6 Rancho Cucamonga, CA Est. 1985
R E F Industries Inc Active
License #480175 C-43 Rancho Cucamonga, CA Est. 1985
Mitsuyoshi Akita Active
License #485220 B Rancho Cucamonga, CA Est. 1986
Sonwest Air Conditioning Inc Active
License #486917 C-20 Rancho Cucamonga, CA Est. 1986
Ram - Co Inc Active
License #487934 C-10 Rancho Cucamonga, CA Est. 1986
Larry Wilburn Active
License #488459 C-33 Rancho Cucamonga, CA Est. 1986
D & R Glass Inc Active
License #488564 C-17 Rancho Cucamonga, CA Est. 1986
3-Valley'S Construction Inc Active
License #489300 B, C-8 +1 more Rancho Cucamonga, CA Est. 1986
A Kaplan Construction Co Inc Active
License #490989 B Rancho Cucamonga, CA Est. 1986
Ray'S Pool & Spa Active
License #492991 C-53 Rancho Cucamonga, CA Est. 1986

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Licensing Resources

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Deposit and payment rules for California contracts
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