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NAICS 237990 · Other Heavy and Civil Engineering Construction

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General engineering contractors in Clayton, CA

9 general engineering contractors in Clayton, CA; 1,359 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. Schaeffer Christopher R

    ActiveA General Engineering

    Walnut Creek, CA · WC exempt · 8 mi away

    Proof for Schaeffer Christopher R
    License
    CSLB 1101897
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering
    Expires
    Mar 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Walnut Creek, CA · serves California
    Phone
    (925) 360-8479
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  2. Scott Mark Construction Inc

    ActiveA General Engineering+3

    Pleasant Hill, CA · WC ✓ · 8 mi away

    Proof for Scott Mark Construction Inc
    License
    CSLB 682814
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building; C15 Flooring and Floor Covering; C28 Lock and Security Equipment
    Expires
    Dec 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Pleasant Hill, CA · serves California
    Phone
    (925) 944-0502
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  3. Seecon Financial & Construction Co Inc

    ActiveA General Engineering+1

    Concord, CA · WC ✓ · 7 mi away

    Proof for Seecon Financial & Construction Co Inc
    License
    CSLB 469096
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Feb 28, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Concord, CA · serves California
    Phone
    (925) 671-7711
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  4. Seeno Albert D Construction Co

    ActiveA General Engineering+1

    Concord, CA · WC ✓ · 7 mi away

    Proof for Seeno Albert D Construction Co
    License
    CSLB 260260
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Apr 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Concord, CA · serves California
    Phone
    (925) 671-7711
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  5. Seeno Albert D III

    ActiveA General Engineering+1

    Concord, CA · WC exempt · 7 mi away

    Proof for Seeno Albert D III
    License
    CSLB 750828
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Jun 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Concord, CA · serves California
    Phone
    (925) 682-6419
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  6. Seeno David T

    ActiveA General Engineering+1

    Pleasant Hill, CA · WC exempt · 8 mi away

    Proof for Seeno David T
    License
    CSLB 1030096
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Aug 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Pleasant Hill, CA · serves California
    Phone
    (925) 483-2589
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  7. Seeno Thomas Albert

    ActiveA General Engineering+1

    Walnut Creek, CA · WC exempt · 7 mi away

    Proof for Seeno Thomas Albert
    License
    CSLB 281272
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Apr 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Walnut Creek, CA · serves California
    Phone
    (925) 932-4655
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  8. Service Pros Plumbers Inc

    ActiveC34 Pipeline+2

    Antioch, CA · WC ✓ · 7 mi away

    Proof for Service Pros Plumbers Inc
    License
    CSLB 979455
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C34 Pipeline; C36 Plumbing; C42 Sanitation System
    Expires
    Jun 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Antioch, CA · serves California
    Phone
    (925) 753-5600
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  9. Sierra Bay Contractors Inc

    ActiveA General Engineering+1

    Concord, CA · WC exempt · 7 mi away

    Proof for Sierra Bay Contractors Inc
    License
    CSLB 735077
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Apr 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Concord, CA · serves California
    Phone
    (925) 671-7711
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  10. Slr International Corporation

    ActiveA General Engineering+1

    Walnut Creek, CA · WC ✓ · 7 mi away

    Proof for Slr International Corporation
    License
    CSLB 991727
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; HAZ Hazardous Substance Removal
    Expires
    Mar 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Walnut Creek, CA · serves California
    Phone
    (510) 451-1761
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  11. Spencon Construction Inc

    ActiveA General Engineering

    Danville, CA · WC ✓ · 9 mi away

    Proof for Spencon Construction Inc
    License
    CSLB 820205
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering
    Expires
    May 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Danville, CA · serves California
    Phone
    (925) 984-2581
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  12. Sports Construction Consultant

    ActiveA General Engineering

    Alamo, CA · WC exempt · 7 mi away

    Proof for Sports Construction Consultant
    License
    CSLB 1077574
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering
    Expires
    Jun 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Alamo, CA · serves California
    Phone
    (925) 766-5334
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  13. Stier Engineering

    ActiveA General Engineering

    Antioch, CA · WC exempt · 8 mi away

    Proof for Stier Engineering
    License
    CSLB 1148360
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering
    Expires
    Dec 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Antioch, CA · serves California
    Phone
    (951) 805-2440
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  14. Stroer & Graff Inc

    ActiveA General Engineering

    Antioch, CA · WC ✓ · 7 mi away

    Proof for Stroer & Graff Inc
    License
    CSLB 397082
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering
    Expires
    Jan 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Antioch, CA · serves California
    Phone
    (925) 778-0200
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  15. Swinerton Builders

    ActiveA General Engineering+18

    Concord, CA · WC ✓ · 7 mi away

    Proof for Swinerton Builders
    License
    CSLB 92
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; ASB Asbestos Certification; B General Building; C2 Insulation and Acoustical; C4 Boiler, Hot Water Heating and Steam Fitting; C5 Framing and Rough Carpentry; C6 Cabinet, Millwork and Finish Carpentry; C8 Concrete; C9 Drywall; C10 Electrical; C12 Earthwork and Paving; C16 Fire Protection; C21 Building Moving/Demolition; C29 Masonry; C33 Painting and Decorating; C35 Lathing and Plastering; C39 Roofing; C50 Reinforcing Steel; D28 Doors, Gates and Activating Devices
    Expires
    Aug 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Concord, CA · serves California
    Phone
    (925) 602-6400
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  16. Swinerton Builders & Power Engineering a Joint Venture

    ActiveA General Engineering+2

    Concord, CA · WC ✓ · 7 mi away

    Proof for Swinerton Builders & Power Engineering a Joint Venture
    License
    CSLB 1024581
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building; HAZ Hazardous Substance Removal
    Expires
    Mar 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Concord, CA · serves California
    Phone
    (925) 602-6400
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  17. Swinerton Energy Inc

    ActiveA General Engineering

    Concord, CA · WC ✓ · 7 mi away

    Proof for Swinerton Energy Inc
    License
    CSLB 1125731
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering
    Expires
    Aug 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Concord, CA · serves California
    Phone
    (925) 602-6400
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  18. Swinerton Rubecon Joint Venture

    ActiveA General Engineering+1

    Concord, CA · WC ✓ · 7 mi away

    Proof for Swinerton Rubecon Joint Venture
    License
    CSLB 1075320
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Apr 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Concord, CA · serves California
    Phone
    (925) 602-6400
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  19. Swinerton / Webcor JV

    ActiveA General Engineering+1

    Concord, CA · WC ✓ · 7 mi away

    Proof for Swinerton / Webcor JV
    License
    CSLB 1037955
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building
    Expires
    Apr 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Concord, CA · serves California
    Phone
    (925) 602-6400
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  20. T N B Construction

    ActiveA General Engineering

    Antioch, CA · WC exempt · 7 mi away

    Proof for T N B Construction
    License
    CSLB 947604
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering
    Expires
    May 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Antioch, CA · serves California
    Phone
    (925) 757-3660
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

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