you asked:
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.
Ghd Services Inc
Concord, CA · WC ✓ · 7 mi away
Proof for Ghd Services Inc
- License
- CSLB 855376
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; 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) 849-1000
- Listing
- Built from public records. Not claimed yet, so call them directly.
Gilbane Federal
Concord, CA · WC ✓ · 7 mi away
Proof for Gilbane Federal
- License
- CSLB 702708
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; HAZ Hazardous Substance Removal
- Expires
- Feb 28, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Concord, CA · serves California
- Phone
- (925) 946-3100
- Listing
- Built from public records. Not claimed yet, so call them directly.
Gold Coast Pipelines Inc
Pleasant Hill, CA · WC ✓ via leasing firm · 8 mi away
Proof for Gold Coast Pipelines Inc
- License
- CSLB 1039097
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- May 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Covered through an employee leasing firm
- Where
- Pleasant Hill, CA · serves California
- Phone
- (925) 483-2589
- Listing
- Built from public records. Not claimed yet, so call them directly.
Gordon N Ball Inc
Walnut Creek, CA · 7 mi away
Proof for Gordon N Ball Inc
- SAM.gov registration
- US-GSA-SAM MCQNLFAUA624
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- Sep 9, 2027
- Checked
- Oct 23, 2026
- Where
- Walnut Creek, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Green Infrastructure and Environmental Inc
Danville, CA · WC ✓ · 9 mi away
Proof for Green Infrastructure and Environmental Inc
- License
- CSLB 1153113
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C10 Electrical
- Expires
- Apr 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Danville, CA · serves California
- Phone
- (925) 807-9469
- Listing
- Built from public records. Not claimed yet, so call them directly.
Guerra Bros Plumbing Inc
Concord, CA · WC ✓ · 7 mi away
Proof for Guerra Bros Plumbing Inc
- License
- CSLB 802256
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C36 Plumbing; C42 Sanitation System
- Expires
- Jan 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Concord, CA · serves California
- Phone
- (925) 288-0409
- Listing
- Built from public records. Not claimed yet, so call them directly.
H P Construction Services Inc
Danville, CA · WC ✓ · 9 mi away
Proof for H P Construction Services Inc
- License
- CSLB 892621
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Oct 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Danville, CA · serves California
- Phone
- (925) 648-8035
- Listing
- Built from public records. Not claimed yet, so call them directly.
H V USA Enterprises
Antioch, CA · WC ✓ · 8 mi away
Proof for H V USA Enterprises
- License
- CSLB 1092514
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C12 Earthwork and Paving; C21 Building Moving/Demolition
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Antioch, CA · serves California
- Phone
- (714) 654-8281
- Listing
- Built from public records. Not claimed yet, so call them directly.
Harrison Industrial Services Inc
Antioch, CA · WC exempt · 8 mi away
Proof for Harrison Industrial Services Inc
- License
- CSLB 985256
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Jul 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Antioch, CA · serves California
- Phone
- (888) 212-6095
- Listing
- Built from public records. Not claimed yet, so call them directly.
High Performance Pipelines Hydrovac Inc
Antioch, CA · WC ✓ · 8 mi away
Proof for High Performance Pipelines Hydrovac Inc
- License
- CSLB 1093309
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C34 Pipeline
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Antioch, CA · serves California
- Phone
- (510) 725-5871
- Listing
- Built from public records. Not claimed yet, so call them directly.
Hp Pipelines Hydrovac Excavation
Antioch, CA · 8 mi away
Proof for Hp Pipelines Hydrovac Excavation
- SAM.gov registration
- US-GSA-SAM TN93Q96TCFA4
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- Feb 19, 2027
- Checked
- Oct 23, 2026
- Where
- Antioch, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Huff General Engineering
Walnut Creek, CA · WC ✓ · 7 mi away
Proof for Huff General Engineering
- License
- CSLB 1138478
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Jun 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Walnut Creek, CA · serves California
- Phone
- (925) 360-0984
- Listing
- Built from public records. Not claimed yet, so call them directly.
Hydro Kingz Inc
Antioch, CA · WC exempt · 7 mi away
Proof for Hydro Kingz Inc
- License
- CSLB 1151169
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Feb 29, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Antioch, CA · serves California
- Phone
- (925) 848-7651
- Listing
- Built from public records. Not claimed yet, so call them directly.
Hydro Kingz Inc.
Antioch, CA · 7 mi away
Proof for Hydro Kingz Inc.
- SAM.gov registration
- US-GSA-SAM U9DWT8YEDUF3
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- Mar 5, 2027
- Checked
- Oct 23, 2026
- Where
- Antioch, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Imperial Custom Kitchen
Antioch, CA · WC exempt · 8 mi away
Proof for Imperial Custom Kitchen
- License
- CSLB 782522
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- B General Building; D30 Pile Driving and Pressure Foundation Jacking
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Antioch, CA · serves California
- Phone
- (925) 779-9786
- Listing
- Built from public records. Not claimed yet, so call them directly.
In Demand Plumbing Heating & Air Inc
Antioch, CA · WC ✓ via leasing firm · 7 mi away
Proof for In Demand Plumbing Heating & Air Inc
- License
- CSLB 943549
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C20 Warm-Air Heating, Ventilating and Air-Conditioning; C34 Pipeline; C36 Plumbing; C42 Sanitation System
- Expires
- Oct 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Covered through an employee leasing firm
- Where
- Antioch, CA · serves California
- Phone
- (925) 757-7000
- Listing
- Built from public records. Not claimed yet, so call them directly.
Independent Construction Company
Concord, CA · WC ✓ · 7 mi away
Proof for Independent Construction Company
- License
- CSLB 215611
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C12 Earthwork and Paving; HAZ Hazardous Substance Removal
- Expires
- Jul 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Concord, CA · serves California
- Phone
- (925) 686-1780
- Listing
- Built from public records. Not claimed yet, so call them directly.
Janus Corporation
Concord, CA · WC ✓ · 5 mi away
Proof for Janus Corporation
- License
- CSLB 572682
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; ASB Asbestos Certification; B General Building; C2 Insulation and Acoustical; C21 Building Moving/Demolition; C22 Asbestos Abatement; HAZ Hazardous Substance Removal
- Expires
- Jul 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Concord, CA · serves California
- Phone
- (925) 969-9200
- Listing
- Built from public records. Not claimed yet, so call them directly.
Joe a Callaway
Danville, CA · WC exempt · 9 mi away
Proof for Joe a Callaway
- License
- CSLB 555222
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C10 Electrical; HAZ Hazardous Substance Removal
- Expires
- May 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Danville, CA · serves California
- Phone
- (925) 413-0523
- Listing
- Built from public records. Not claimed yet, so call them directly.
K&K Construction
Concord, CA · WC ✓ · 7 mi away
Proof for K&K Construction
- License
- CSLB 1079152
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C10 Electrical; C27 Landscaping; C36 Plumbing
- Expires
- Aug 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Concord, CA · serves California
- Phone
- (510) 209-0742
- Listing
- Built from public records. Not claimed yet, so call them directly.
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