Licensed Contractors in Livermore, California
Livermore has 765 licensed contractors registered with the California Contractors State License Board across 65 trade classifications. The most common specialties are Electrical Contractor (110), Plumbing Contractor (62), Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor (55). 366 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: February 20, 2026.
Contractors by Classification
General Contractors
B: General Building Contractor
(295)
A: General Engineering Contractor
(66)
B-2: Residential Remodeling Contractor
(5)
Specialty Contractors
C-10: Electrical Contractor
(110)
C-36: Plumbing Contractor
(62)
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
(55)
C-27: Landscaping Contractor
(45)
C-7: Low Voltage Systems Contractor
(34)
C-33: Painting and Decorating Contractor
(30)
C-54: Ceramic and Mosaic Tile Contractor
(26)
C-39: Roofing Contractor
(21)
C-8: Concrete Contractor
(21)
C-15: Flooring and Floor Covering Contractor
(20)
Niles Electric Company
Active
License #168342
C-10
Livermore, CA
Est. 1957
J & M Inc
Active
License #176709
A
Livermore, CA
Est. 1958
License #187698
B, C-7 +1 more
Livermore, CA
Est. 1959
Polishedcrete
Active
License #242104
C-8
Livermore, CA
Est. 1966
License #253756
C-10, C-20
Livermore, CA
Est. 1968
Tucknott Electric Co
Active
License #272838
A, ASB +3 more
Livermore, CA
Est. 1971
Mission City Rebar Inc
Active
License #273978
C-50
Livermore, CA
Est. 1972
Fremont Paving Company Inc
Active
License #279637
A
Livermore, CA
Est. 1972
Sansei Gardens Inc
Active
License #291612
A, C-8 +1 more
Livermore, CA
Est. 1974
Power Systems Testing Co
Active
License #306378
C-10
Livermore, CA
Est. 1975
Sposeto Engineering Inc
Active
License #310292
A, C-8
Livermore, CA
Est. 1975
License #313758
B, C-17 +1 more
Livermore, CA
Est. 1975
Ross Mc Donald Company Inc
Active
License #314333
B, D34
Livermore, CA
Est. 1975
G & K Carpets Inc
Active
License #328485
C-15
Livermore, CA
Est. 1976
License #332447
C-20, C-43
Livermore, CA
Est. 1977
Carefree Toland Pools Inc
Active
License #334958
C-53
Livermore, CA
Est. 1977
Quartaroli Construction Co
Active
License #353641
B
Livermore, CA
Est. 1978
Sherman D Balch
Active
License #355488
B
Livermore, CA
Est. 1978
Kares Construction Inc
Active
License #374120
B
Livermore, CA
Est. 1979
Sunrise Construction Co
Active
License #377252
B
Livermore, CA
Est. 1979
License #382400
B, C-39
Livermore, CA
Est. 1979
Contract Floor Coverings Inc
Active
License #385256
B, C-15 +1 more
Livermore, CA
Est. 1979
Kerry Taylor
Active
License #388080
B
Livermore, CA
Est. 1980
Magnum Construction
Active
License #390246
B
Livermore, CA
Est. 1980
J D General Construction Inc
Active
License #391749
A, B +8 more
Livermore, CA
Est. 1980
Golden State Landscaping
Active
License #393345
A, B +2 more
Livermore, CA
Est. 1980
License #398975
C-55
Livermore, CA
Est. 1980
Spacetone Acoustics Inc
Active
License #397494
B, C-2 +1 more
Livermore, CA
Est. 1981
All-Guard Alarm Systems Inc
Active
License #398874
C-7, C-10
Livermore, CA
Est. 1981
License #401498
A, B +4 more
Livermore, CA
Est. 1981
Laser Security Systems Inc
Active
License #404142
C-7
Livermore, CA
Est. 1981
Pacific Rim Plumbing Inc
Active
License #404372
C-36
Livermore, CA
Est. 1981
Smart Energy Upgrade Co
Active
License #405505
B, C-17
Livermore, CA
Est. 1981
Tritek Construction Inc
Active
License #410182
B, C-5 +1 more
Livermore, CA
Est. 1981
License #411617
C-39
Livermore, CA
Est. 1981
Marina Mechanical Services
Active
License #416198
C-2, C-4 +5 more
Livermore, CA
Est. 1981
Mountain Cascade Inc
Active
License #422496
A, HAZ
Livermore, CA
Est. 1982
David Keith Nelson
Active
License #423899
B
Livermore, CA
Est. 1982
Kollias Construction Company
Active
License #425152
A, B
Livermore, CA
Est. 1982
License #432659
C-27
Livermore, CA
Est. 1982
Randazzo Constructions Inc
Active
License #433590
B
Livermore, CA
Est. 1983
License #435415
A, C-27 +1 more
Livermore, CA
Est. 1983
Evans Brothers Inc
Active
License #443018
A, B +2 more
Livermore, CA
Est. 1983
J M O'Neill Inc
Active
License #447618
B
Livermore, CA
Est. 1983
Mcgrath Rentcorp
Active
License #450299
B
Livermore, CA
Est. 1983
License #452985
C-7
Livermore, CA
Est. 1984
Bigelow'S Concrete
Active
License #453063
C-8
Livermore, CA
Est. 1984
Ahboltin Construction Inc
Active
License #456781
B
Livermore, CA
Est. 1984
Calco Fence Inc
Active
License #458341
C-13
Livermore, CA
Est. 1984
Green Valley Group
Active
License #458951
A, C-27
Livermore, CA
Est. 1984