Updated: May 23, 2026
Location and Projects
Address
337 WHIPPLE RD, Union City, CA, 94587
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JS Concrete
JS Concrete, 337 Whipple Rd, Union City, CA (Owned by: Robert John Evans Jr) holds a Concrete license and 2 other licenses according to the California license board.
Their BuildZoom score of 100 ranks in the top 13% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring JS Concrete, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
JS Concrete Services
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JS Concrete Contact Information
Phone Number: (510) 750-3030
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Address: 337 WHIPPLE RD, Union City, CA 94587
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Block wall @ west side of sfr; (23 l x 6 h) with 6 l to go around light pole; shared with 17038 ermanita
Valuation:
N/A
Permit #:
BLD25-00995
Status:
issued
Fee:
$123
Permit Type:
N/A
Building Type:
N/A
Block wall @ east side of sfr; (23 l x 6 h) with 6 l to go around light pole; shared with 17039 faysmith
Valuation:
N/A
Permit #:
BLD25-00994
Status:
issued
Fee:
$123
Permit Type:
N/A
Building Type:
N/A
Phenomenex - ten imp: install new epi chemical storage cabinet and liquid nitrogen equipment on new concrete pads
Valuation:
N/A
Permit #:
BLD25-01214
Status:
issued
Fee:
$1,186
Permit Type:
N/A
Building Type:
N/A
Driveway approach and curb/gutter
Valuation:
N/A
Permit #:
ENC2023-00206
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct blk wall 71 x6 hi on east side of prop shared with 3523 187th st and 61 x6 hi shared on west side with 3531 187th st at rear of prop 57 x6 hi not shared built to city standards
Valuation:
N/A
Permit #:
BLD13-01565
Status:
filed
Fee:
$125
Permit Type:
N/A
Building Type:
N/A
Driveway approach
Valuation:
N/A
Permit #:
ENC2021-00024
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Block wall - 65 long x 6 high
Valuation:
N/A
Permit #:
50013-0605
Status:
final
Fee:
N/A
Permit Type:
Fence
Building Type:
N/A
Remove and replace approx 18 of sidewalk and driveway
Valuation:
N/A
Permit #:
PW17-0769
Status:
issued
Fee:
$553
Permit Type:
Sidewalk driveway c
Building Type:
N/A
Install a new driveway approach
Valuation:
$0
Permit #:
BS1403188
Status:
Final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct blk wall 61 x6 hi on east side of prop shared with 3527 187th st built to city standards
Valuation:
N/A
Permit #:
BLD13-01567
Status:
filed
Fee:
$71
Permit Type:
N/A
Building Type:
N/A
Construct blk wall 71 x6 hi on west side of prop shared with 3527 187th built to city standards
Valuation:
N/A
Permit #:
BLD13-01566
Status:
filed
Fee:
$73
Permit Type:
N/A
Building Type:
N/A
Free standing blockwall 91 lf 3.5ft/6ft per city of la standard
Valuation:
N/A
Permit #:
09020-10000-02518
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Sidewalk reconstruction due to gas service replacement
Valuation:
$0
Permit #:
E09-0030
Status:
ISSUED
Fee:
$281
Permit Type:
N/A
Building Type:
N/A
Block wall 6 x 56 and 4 x 24 west side of prop not shared built to city standards
Valuation:
$852
Permit #:
BLD12-00802
Status:
final
Fee:
$75
Permit Type:
N/A
Building Type:
N/A
Block wall 6 x 38 and 3 6 x 24 6 east side of single family residence not shared built to city standards
Valuation:
$1,310
Permit #:
BLD12-00927
Status:
final
Fee:
$86
Permit Type:
N/A
Building Type:
N/A
Construct 60 x6 hi blk wall rear of property shared w 21810 ladeene ave built to city standards
Valuation:
$785
Permit #:
BLD10-00605
Status:
final
Fee:
$66
Permit Type:
N/A
Building Type:
N/A
Construct 60 x6 hi blk wall rear of property shared w 21809 grant ave built to city standards
Valuation:
$785
Permit #:
BLD10-00604
Status:
final
Fee:
$69
Permit Type:
N/A
Building Type:
N/A
R3 u1 construct blk wall 52 x6 hi on south side of prop and 8 x6 hi at east frt of prop not shared built to city standards
Valuation:
$1,569
Permit #:
BLD10-00318
Status:
issued
Fee:
$86
Permit Type:
N/A
Building Type:
N/A
Block wall 6 x 56 and 4 x 24 east side of prop shared with 17524 cerise built to city standards
Valuation:
$852
Permit #:
BLD12-00803
Status:
canceled
Fee:
$72
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
JS Concrete License info
Verified License
| License # | 756730 |
| Status | Active |
| State | California |
| Type | Concrete |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for JS Concrete at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 900750 |
| Status | Active |
| State | California |
| Type | Concrete |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for JS Concrete at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 731790 |
| Status | Inactive |
| State | California |
| Type | Concrete Related Services |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for JS Concrete at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
18
Permits
- Building permit records show that JS Concrete has worked on 18 permitted projects.
JS Concrete Employees
JM
Jesus Monteverde
Sole Owner
JM
Jesus Monteverde
Sole Owner
JR
Jose Reynoso
Sole Owner
RJ
Robert John Evans Jr
Owner