you asked:
General engineering contractors in Castro Valley, CA
17 general engineering contractors in Castro Valley, CA; 1,880 within 30 miles. Every listing checked against the issuer's record, in the published order.
Utilitix Pipelines Inc
Hayward, CA · WC ✓ · 6 mi away
Proof for Utilitix Pipelines Inc
- License
- CSLB 1084224
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Jan 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Phone
- (510) 978-8093
- Listing
- Built from public records. Not claimed yet, so call them directly.
Valley Transit Partners
Alameda, CA · WC exempt · 10 mi away
Proof for Valley Transit Partners
- License
- CSLB 1138096
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C10 Electrical
- Expires
- May 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Alameda, CA · serves California
- Phone
- (510) 748-1870
- Listing
- Built from public records. Not claimed yet, so call them directly.
Victor Rasilla
Moraga, CA · WC exempt · 9 mi away
Proof for Victor Rasilla
- License
- CSLB 789238
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Mar 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Moraga, CA · serves California
- Phone
- (925) 388-0863
- Listing
- Built from public records. Not claimed yet, so call them directly.
W B Builders Inc
Hayward, CA · WC ✓ · 5 mi away
Proof for W B Builders Inc
- License
- CSLB 963203
- 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
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Phone
- (510) 755-0859
- Listing
- Built from public records. Not claimed yet, so call them directly.
Wes-Co Industries
San Leandro, CA · WC ✓ · 6 mi away
Proof for Wes-Co Industries
- License
- CSLB 246673
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C43 Sheet Metal
- Expires
- Jan 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- San Leandro, CA · serves California
- Phone
- (510) 534-3320
- Listing
- Built from public records. Not claimed yet, so call them directly.
Wing on Construction Inc
San Leandro, CA · WC ✓ · 5 mi away
Proof for Wing on Construction Inc
- License
- CSLB 949206
- 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
- Workers' comp on file
- Where
- San Leandro, CA · serves California
- Phone
- (510) 786-8838
- Listing
- Built from public records. Not claimed yet, so call them directly.
Z and Z Plumbing
San Leandro, CA · WC ✓ · 6 mi away
Proof for Z and Z Plumbing
- License
- CSLB 896116
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C36 Plumbing
- Expires
- May 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- San Leandro, CA · serves California
- Phone
- (510) 708-4237
- Listing
- Built from public records. Not claimed yet, so call them directly.
Absl Construction
Hayward, CA · 5 mi away
Proof for Absl Construction
- SAM.gov registration
- US-GSA-SAM C2ULNDMMX8K6
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- Mar 24, 2027
- Checked
- Oct 23, 2026
- Where
- Hayward, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Desilva Gates Construction LLC
Dublin, CA · 9 mi away
Proof for Desilva Gates Construction LLC
- SAM.gov registration
- US-GSA-SAM SC36KWHBWJS6
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Partnership or limited liability partnership registered in SAM.gov
- Expires
- Sep 17, 2027
- Checked
- Oct 23, 2026
- Where
- Dublin, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
North Bay Design and Build Inc
Hayward, CA · WC ✓ · 6 mi away
Proof for North Bay Design and Build Inc
- License
- CSLB 1129470
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning
- Expires
- Nov 30, 2026
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Serafix Engineering Contractors Inc
San Ramon, CA · 6 mi away
Proof for Serafix Engineering Contractors Inc
- SAM.gov registration
- US-GSA-SAM W9XGKJXM37D9
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- Jan 29, 2027
- Checked
- Oct 23, 2026
- Where
- San Ramon, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Challenge Rooter
Oakland, CA · WC ✓ · 9 mi away
Proof for Challenge Rooter
- License
- CSLB 1008865
- Issuer
- California Contractors State License Board
- Status
- Jdg entity susp
- Class
- A General Engineering; C42 Sanitation System
- Expires
- Mar 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Oakland, CA · serves California
- Phone
- (510) 877-2050
- Listing
- Built from public records. Not claimed yet, so call them directly.
A a Custom Construction Services a California Joint Venture
Walnut Creek, CA · WC exempt · 14 mi away
Proof for A a Custom Construction Services a California Joint Venture
- License
- CSLB 1029053
- 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
- Walnut Creek, CA · serves California
- Phone
- (925) 922-4770
- Listing
- Built from public records. Not claimed yet, so call them directly.
A & B Construction
Oakland, CA · WC ✓ · 15 mi away
Proof for A & B Construction
- License
- CSLB 636514
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Jan 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Oakland, CA · serves California
- Phone
- (510) 999-6000
- Listing
- Built from public records. Not claimed yet, so call them directly.
A & K Underground
Newark, CA · WC exempt · 14 mi away
Proof for A & K Underground
- License
- CSLB 780987
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Newark, CA · serves California
- Phone
- (650) 222-4058
- Listing
- Built from public records. Not claimed yet, so call them directly.
A M a C Construction & Restoration
Walnut Creek, CA · WC ✓ · 13 mi away
Proof for A M a C Construction & Restoration
- License
- CSLB 796327
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C10 Electrical; C36 Plumbing
- Expires
- Jun 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Walnut Creek, CA · serves California
- Phone
- (925) 356-2619
- Listing
- Built from public records. Not claimed yet, so call them directly.
A y Engineering
Oakland, CA · WC ✓ · 13 mi away
Proof for A y Engineering
- License
- CSLB 696828
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Oct 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Oakland, CA · serves California
- Phone
- (510) 541-0868
- Listing
- Built from public records. Not claimed yet, so call them directly.
AC3
Lafayette, CA · WC ✓ · 14 mi away
Proof for AC3
- License
- CSLB 647234
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C10 Electrical; D21 Machinery and Pumps
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Lafayette, CA · serves California
- Phone
- (510) 865-2455
- Listing
- Built from public records. Not claimed yet, so call them directly.
Adg Development & Investments Inc
Orinda, CA · WC exempt · 14 mi away
Proof for Adg Development & Investments Inc
- License
- CSLB 662234
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Jan 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Orinda, CA · serves California
- Phone
- (925) 708-8994
- Listing
- Built from public records. Not claimed yet, so call them directly.
Adobe Soil & Structures Engineering Contractors Inc
Oakland, CA · WC ✓ · 14 mi away
Proof for Adobe Soil & Structures Engineering Contractors Inc
- License
- CSLB 687732
- 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
- Oakland, CA · serves California
- Phone
- (510) 654-2600
- Listing
- Built from public records. Not claimed yet, so call them directly.
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