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.
Ransome Company
San Leandro, CA · WC ✓ · 6 mi away
Proof for Ransome Company
- License
- CSLB 22726
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C10 Electrical
- Expires
- Oct 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- San Leandro, CA · serves California
- Phone
- (510) 686-9900
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rapid Grading Services
Hayward, CA · WC ✓ · 6 mi away
Proof for Rapid Grading Services
- License
- CSLB 1101213
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C12 Earthwork and Paving; C31 Construction Zone Traffic Control; HAZ Hazardous Substance Removal
- Expires
- Feb 28, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Phone
- (510) 980-0102
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rasilla Victor General Contractor Incorporated
Moraga, CA · WC ✓ · 9 mi away
Proof for Rasilla Victor General Contractor Incorporated
- License
- CSLB 1035228
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Jan 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Moraga, CA · serves California
- Phone
- (925) 388-0863
- Listing
- Built from public records. Not claimed yet, so call them directly.
Ray's Electric
Oakland, CA · 9 mi away
Proof for Ray's Electric
- SAM.gov registration
- US-GSA-SAM UBD6CF4A5MM4
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- Sep 24, 2027
- Checked
- Oct 23, 2026
- Where
- Oakland, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Redgwick Construction Co
Oakland, CA · WC ✓ · 9 mi away
Proof for Redgwick Construction Co
- License
- CSLB 140057
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; HAZ Hazardous Substance Removal
- Expires
- May 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Oakland, CA · serves California
- Phone
- (510) 792-1727
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rezcon
Oakland, CA · WC exempt · 8 mi away
Proof for Rezcon
- License
- CSLB 1087771
- 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
- Oakland, CA · serves California
- Phone
- (510) 269-1384
- Listing
- Built from public records. Not claimed yet, so call them directly.
Ridge Communications, Inc
San Ramon, CA · 6 mi away
Proof for Ridge Communications, Inc
- SAM.gov registration
- US-GSA-SAM H1GWSVV3NHJ1
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- May 18, 2027
- Checked
- Oct 23, 2026
- Where
- San Ramon, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rielsan General Building and Maintenance Inc
Hayward, CA · WC ✓ · 5 mi away
Proof for Rielsan General Building and Maintenance Inc
- License
- CSLB 1115199
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Jan 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Phone
- (510) 512-3170
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rnr General Engineering
Hayward, CA · WC ✓ · 6 mi away
Proof for Rnr General Engineering
- License
- CSLB 985669
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Apr 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Phone
- (925) 718-5170
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rnr Paving, Inc
San Ramon, CA · 6 mi away
Proof for Rnr Paving, Inc
- SAM.gov registration
- US-GSA-SAM R1WTC7HY9DH9
- Issuer
- US-GSA-SAM
- Status
- Active
- Class
- Corporation registered in SAM.gov
- Expires
- Jul 15, 2027
- Checked
- Oct 23, 2026
- Where
- San Ramon, CA · serves California
- Listing
- Built from public records. Not claimed yet, so call them directly.
Roberts-Obayashi James E Corporation
Danville, CA · WC ✓ · 9 mi away
Proof for Roberts-Obayashi James E Corporation
- License
- CSLB 358519
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Jul 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Danville, CA · serves California
- Phone
- (925) 820-0600
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rock Solid Development
San Ramon, CA · WC exempt · 6 mi away
Proof for Rock Solid Development
- License
- CSLB 1063766
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building
- Expires
- Feb 29, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- San Ramon, CA · serves California
- Phone
- (925) 548-7453
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rodan Builders Inc
Hayward, CA · WC ✓ · 6 mi away
Proof for Rodan Builders Inc
- License
- CSLB 858119
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C13 Fencing; C21 Building Moving/Demolition
- Expires
- Apr 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Phone
- (650) 508-1700
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rosas Brothers Construction
Oakland, CA · WC ✓ · 10 mi away
Proof for Rosas Brothers Construction
- License
- CSLB 848835
- 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) 534-1077
- Listing
- Built from public records. Not claimed yet, so call them directly.
Rosas Construction
Oakland, CA · WC exempt · 10 mi away
Proof for Rosas Construction
- License
- CSLB 805099
- 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
- Oakland, CA · serves California
- Phone
- (510) 534-1077
- Listing
- Built from public records. Not claimed yet, so call them directly.
S & H Construction Inc
Danville, CA · WC ✓ · 9 mi away
Proof for S & H Construction Inc
- License
- CSLB 786358
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C9 Drywall; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Danville, CA · serves California
- Phone
- (510) 579-7382
- Listing
- Built from public records. Not claimed yet, so call them directly.
S N Building
San Leandro, CA · WC exempt · 5 mi away
Proof for S N Building
- License
- CSLB 1105011
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C10 Electrical
- Expires
- May 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- San Leandro, CA · serves California
- Phone
- (510) 507-0902
- Listing
- Built from public records. Not claimed yet, so call them directly.
S & S Trucking
Oakland, CA · WC ✓ · 9 mi away
Proof for S & S Trucking
- License
- CSLB 980614
- 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
- Oakland, CA · serves California
- Phone
- (510) 383-3556
- Listing
- Built from public records. Not claimed yet, so call them directly.
S2Serm LLC
Danville, CA · WC ✓ · 9 mi away
Proof for S2Serm LLC
- License
- CSLB 1146389
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering
- Expires
- Nov 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Danville, CA · serves California
- Phone
- (925) 362-3041
- Listing
- Built from public records. Not claimed yet, so call them directly.
Sci Environmental LLC
Hayward, CA · WC ✓ · 6 mi away
Proof for Sci Environmental LLC
- License
- CSLB 1145146
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; C21 Building Moving/Demolition; C22 Asbestos Abatement
- Expires
- Oct 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Hayward, CA · serves California
- Phone
- (510) 574-0570
- Listing
- Built from public records. Not claimed yet, so call them directly.
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