Updated: Apr 12, 2026
Location and Projects
Address
1141 TIEGEN DR, Hayward, CA, 94542
Use our bidding system to
request a quote
RONGJIN DU Construction
RONGJIN DU, 1141 Tiegen Dr, Hayward, CA (Owned by: Rongjin Du) holds a General Building license according to the California license board.
Their BuildZoom score of 97 ranks in the top 18% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring RONGJIN DU, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
RONGJIN DU Services
Start a project today:
RONGJIN DU Contact Information
Phone Number: (626) 200-6772
Edit
Address: 1141 TIEGEN DR, Hayward, CA 94542
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
RONGJIN DU Hayward
Quality
97
82nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
RONGJIN DU has a BuildZoom score of 97, which places them above 82% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
1 project
|
2024 |
Our building permit records indicate that RONGJIN DU has worked on at least
4.0 projects over the past 2 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Upgrade/replace electric panel from 100 amp to 200 amp
Valuation:
N/A
Permit #:
BLD-2025-495
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$12,000
Permit #:
BLD2025-0308
Status:
issued
Fee:
$1,338
Permit Type:
Addition
Building Type:
N/A
Bathroom remodel new shower vanity and toiletreplace kitchen cabitets and counter tops
Valuation:
$22,000
Permit #:
202106116
Status:
complete
Fee:
$420
Permit Type:
Remodel - complet...
Building Type:
N/A
Kitchen remodel
Valuation:
$40,000
Permit #:
B2024-0207
Status:
final
Fee:
$1,798
Permit Type:
Interior remodel
Building Type:
N/A
Crn2019-56851: relocate tankless water heater in garage dedicated 3/4 gas line. max equipment noise shall not exceed 50dba at property line
Valuation:
N/A
Permit #:
BLD2019-56851
Status:
final
Fee:
$260
Permit Type:
N/A
Building Type:
N/A
Remodel kitchen - ( 193 sf); remodel (2) bathrooms: aster (42 sf) and half bathroom (27 sf); grade main panel same location - (200 amp)
Valuation:
$80,000
Permit #:
B-2018-1288
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Smoke damage repair replace drywall floor and lightingupgrade panel addition closet @ bd4 enlarge closet @ bd3
Valuation:
$57,606
Permit #:
201700540
Status:
complete
Fee:
$1,471
Permit Type:
Residential remodel
Building Type:
N/A
Kitchen remodel (2) bathroom remodel recessed lighting
Valuation:
N/A
Permit #:
SFD2016-0312
Status:
final
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Remodel one kitchen and two bathrooms 286 sf. removal and replacement of existing cabinets countertops and appliances upgrading and adding electrical outlet as needed and replace existing range hood. replacing existing vanities and shower upgrading and adding electrical outlet as needed and upgrading existing exhaust fans. no structural changes are proposed
Valuation:
$25,000
Permit #:
B25-1213
Status:
issued
Fee:
$1,694
Permit Type:
N/A
Building Type:
Dwellings
Similar Contractors See more
242
BZ Score
$59K
Avg Project
-
Projects
193
BZ Score
$200K
Avg Project
-
Projects
188
BZ Score
$30K
Avg Project
-
Projects
RONGJIN DU Reviews
BuildZoom hasn't received any reviews for RONGJIN DU. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
RONGJIN DU License info
Verified License
| License # | 974565 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for RONGJIN DU at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
9
Permits
- Building permit records show that RONGJIN DU has worked on 9 permitted projects.
RONGJIN DU Employees
RD
Rongjin Du
Sole Owner
RD
Rongjin Du
Owner