License is active
Source: Contractors State License Board (CSLB)
Licensed
Current and in good standing
Bonded
$25,000 surety bond
Insured
Workers' comp coverage on file
Clean record
No complaints or disciplinary actions
Hiring this contractor?
Get alerts if their license status changes.
You're monitoring this license!
We'll email you if the license status, bond, or complaint history changes.
Something went wrong
Is this your business?
Claim your profile to manage your listing.
Claim request submitted!
We'll be in touch at the email you provided to verify your identity.
Something went wrong
B Y C CONSTRUCTION INC
- License Number
- 839798
- State
- California
- Status
- active
- Business Type
- Corporation
- Address
- 14264 DOOLITTLE DR SAN LEANDRO, CA, 94577 Alameda County
- Phone
- (510) 357 8001
License Dates
Issued
06/02/2004
Expires
06/30/2026
Expires in 11 weeks
CSLB Last Updated
03/18/2026
License Classifications
Personnel & Officers
YU MOONSOO| YU MOON SOO
Officer
KANG BRYAN BUWON
Responsible Managing Officer/Chief Executive Officer/President
KANG DAVID WON
Officer
Contractor Bond
Amount: $25,000
Company: NORTH RIVER INSURANCE COMPANY (THE)
Bond #04CF612685
Effective: 01/03/2023
Workers' Compensation
Carrier: STATE COMPENSATION INSURANCE FUND
Policy #9336548
Effective: 04/07/2023
Expires: 04/07/2027
Cancelled: 04/03/2026
CSLB designation: Workers' Compensation Insurance
Complaints & Disciplinary History
This reflects CSLB's bulk license data. For detailed complaint history including pending investigations, check the official CSLB record.
Building Permits
Source: LA City Open Data (LADBS)
otc alterations permit
1382 16th Av, 94122
re-roofing: remove and replace roofing material / existing roofing material (in-kind)
$4,500
2026-03-18
otc alterations permit
957 Lombard St, 94133
reroofing (no hotworks)
$15,000
2025-05-08
otc alterations permit
1749 San Jose Av, 94112
re-roofing: remove and replace roofing material / existing roofing material (in-kind)
$5,000
2024-06-24
otc alterations permit
61 Divisadero St, 94117
no tear-off, overlay on top of the (e) part of the roof.
$3,000
2023-06-13
otc alterations permit
90 Rome St, 94112
re-roofing: remove and replace roofing material / existing roofing material (in-kind)
$7,000
2023-06-12
otc alterations permit
325 Kearny St, 94108
reroofing. no tearoff, overlay system.
$9,000
2023-05-11
otc alterations permit
2950 Fulton St, 94118
reroofing.
$25,000
2022-10-07
otc alterations permit
785 Victoria St, 94127
reroofing
$15,800
2022-08-17
otc alterations permit
294 Chester Av, 94132
re-roofing: remove and replace roofing material / existing roofing material (in-kind)
$7,000
2022-06-14
otc alterations permit
1424 32nd Av, 94122
re-roofing: remove and replace roofing material / existing roofing material (in-kind)
$8,000
2022-05-09
Showing 10 of 76 permits
Verify this record on the official state licensing board
View on Contractors State License Board (CSLB) →Learn how to verify contractor licenses in California
California licensing guide →Data sourced from official state licensing board records. Always confirm critical information directly with the state board.
Verify Another Contractor
Homeowner Resources
Other Licensed B| C39 in SAN LEANDRO
ANDY'S ROOFING CO INC
License #521860 · CA
R K ROOFING & CONSTRUCTION INC
License #781758 · CA
STRONGER BUILDING SERVICES
License #955618 · CA
ROOFING LOGISTICS INC
License #989106 · CA
STATE ROOFING SYSTEMS INC
License #417692 · CA