Licensed Contractors in Walnut, California

Walnut has 273 licensed contractors registered with the California Contractors State License Board across 40 trade classifications. The most common specialties are Electrical Contractor (30), Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor (26), Plumbing Contractor (20). 186 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 (194)
Electrical (41)
HVAC (30)
Limited (23)
Plumbing (22)
Painting (14)
Landscaping (9)
Roofing (8)
Fire (6)
Earthwork (5)
Solar (4)
Welding (3)
Vogel Construction Company Active
License #206453 B, D16 Walnut, CA Est. 1962
Reliable Glass Co Inc Active
License #232953 C-17 Walnut, CA Est. 1965
United Riggers & Erectors Inc Active
License #245451 A, B +4 more Walnut, CA Est. 1966
Gary G Miller General Building Contractor Active
License #295177 B Walnut, CA Est. 1974
John Carrey Dba John Carrey And Associates Active
License #362692 B Walnut, CA Est. 1978
Bob Wright Industrial Properties Inc Active
License #394632 B Walnut, CA Est. 1980
Union Construction Company Active
License #399937 A, B +1 more Walnut, CA Est. 1981
Green Eagle Enterprise Corporation Active
License #408399 B Walnut, CA Est. 1981
Walter C Hong Jr Active
License #420543 B Walnut, CA Est. 1982
Preferred Electrical Contractors Inc Active
License #427052 C-10 Walnut, CA Est. 1982
Air Temperature Control Active
License #449261 C-20 Walnut, CA Est. 1983
Weatherite Corporation Active
License #451778 C-20 Walnut, CA Est. 1984
Tsai Masterbuilders Active
License #457096 B Walnut, CA Est. 1984
Alfredo Esparza Dba A E Acoustics Active
License #460512 C-2 Walnut, CA Est. 1984
J R Construction Active
License #465277 B Walnut, CA Est. 1984
Diversified Coatings & Linings Co Active
License #470843 D06, D12 Walnut, CA Est. 1985
Southcoast Cabinet Inc Active
License #484318 C-6 Walnut, CA Est. 1985
David Sito Dba Archi Plus Construction Active
License #489737 B, C-27 Walnut, CA Est. 1986
Sinocan Inc Active
License #505474 A, B Walnut, CA Est. 1987
G Phillips Plumbing Active
License #526195 C-36 Walnut, CA Est. 1988
L R Locksmithing Active
License #527795 D16 Walnut, CA Est. 1988
Sung Pacific Inc Active
License #529045 B, C-27 +1 more Walnut, CA Est. 1988
Rc Electric Active
License #543321 C-10 Walnut, CA Est. 1988
Ronald D Sorensen Active
License #562879 D35 Walnut, CA Est. 1989
V E Anderson Inc Dba Advanced Aluminum Awning Co Active
License #575140 B, D03 Walnut, CA Est. 1989
Cathleen C Miller Active
License #576933 B Walnut, CA Est. 1989
Clarion Construction Inc Active
License #577545 B, C-43 Walnut, CA Est. 1989
Bear Flag Construction Active
License #580269 B Walnut, CA Est. 1989
Ry Construction/Communication Systems Active
License #601155 B, C-7 Walnut, CA Est. 1990
Thomas Chuan Active
License #608285 B Walnut, CA Est. 1990
Highland Construction Co Active
License #608605 B Walnut, CA Est. 1991
Mid-Valley Automatic Fire Protection Systems Inc Active
License #610562 C-10, C-16 Walnut, CA Est. 1991
Coast Cabinet Installations Inc Active
License #628685 C-6 Walnut, CA Est. 1991
Derek Construction Active
License #634954 B Walnut, CA Est. 1992
Pb Crane Inc Dba All American Crane Maintenance Active
License #659174 C-10 Walnut, CA Est. 1992
John The Plumber Active
License #669082 C-36 Walnut, CA Est. 1993
Shea Homes Inc Active
License #672285 A, B Walnut, CA Est. 1993
United Industrial Contractors Active
License #674403 B, D06 +2 more Walnut, CA Est. 1993
Golden Sentry General Contractors Inc Active
License #675471 B Walnut, CA Est. 1993
Dong Tsair Hwang Active
License #697328 C-10, C-36 Walnut, CA Est. 1994
Billary Development Inc Active
License #711282 B Walnut, CA Est. 1995
Whitman Electric Active
License #712068 C-10 Walnut, CA Est. 1995
Lee'S Construction Active
License #718265 B, C-10 Walnut, CA Est. 1996
Yu Ji Wu Active
License #718880 B Walnut, CA Est. 1996
Ming Construction Active
License #719782 B Walnut, CA Est. 1996
P & R Painting Services Inc Active
License #722635 C-33 Walnut, CA Est. 1996
Martin'S Electrical And Lighting Company Active
License #726579 C-10 Walnut, CA Est. 1996
Jay'S Services Active
License #732053 C-20 Walnut, CA Est. 1997
Louis Doors Garage Door Specialties Inc Active
License #733583 D28 Walnut, CA Est. 1997
Eduardo Santos Electric Active
License #741965 C-10 Walnut, CA Est. 1997

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Licensing Resources

How to verify a contractor license
Deposit and payment rules for California contracts
Home improvement contract requirements

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