Updated: Feb 18, 2026
Location and Projects
Address
21703 LOST RIVER DRIVE, Diamond Bar, CA, 91765
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Hsu - Da Wang Construction
Serving Diamond Bar, California for over two decades, Hsu - Da Wang brings more than 26 years of experience to residential construction projects in the region. The company’s project portfolio, as reflected in local permit activity, includes work on single-family houses within the Diamond Bar area. Drawing on a long tenure in the industry, Hsu - Da Wang is familiar with the local codes and building requirements specific to Los Angeles County, which informs their approach to construction and remodeling work. The firm serves homeowners looking for reliable project execution and has a history of completing permitted work in established neighborhoods. Hsu - Da Wang is equipped to handle a range of residential construction needs, drawing from decades of hands-on local experience.
Hsu - Da Wang Services
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Hsu - Da Wang Contact Information
Phone Number: (626) 503-2888
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Address: 21703 LOST RIVER DRIVE, Diamond Bar, CA 91765
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Hsu - Da Wang Diamond Bar
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Hsu - Da Wang has a BuildZoom score of 101, which places them above 88% of 336,931 contractors in California.
Activity
|
3 projects
|
2023 |
Our building permit records indicate that Hsu - Da Wang has worked on at least
3.0 projects over the past 3 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.
Experience
|
3 projects
|
Commercial Renovations |
Analyzing permits over the last 4 years shows that Hsu - Da Wang mostly works on
commercial renovation
projects.
Pricing
|
1 project
|
$100k-$250k |
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.
Qbedding inc: tenant improvement for interior alteration fr
Valuation:
N/A
Permit #:
B-BP22-0734
Status:
final
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
N/A
Qbedding inc: tenant improvement for interior alteration fr
Valuation:
$200,000
Permit #:
B-BP22-0522
Status:
final
Fee:
$14,341
Permit Type:
Tenant improvement
Building Type:
N/A
No information
Valuation:
N/A
Permit #:
B-BP23-0262
Status:
plancheck
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
N/A
Mop sink & electric water heater. per the applicant the project is approved by the los angeles county health department and city of los angeles bureau of sanitation 1 of 2 w #12041-10000-13455
Valuation:
N/A
Permit #:
12042-10000-10517
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
H030 substd housing; h095 inad maint.-loose and unsecurde areas of the accoustic ceiling inoperable toilet missing broken and cracked floor tiles inoperable garage door; h075 haz plumbing-south bathroom leaking sink faucet plumbing pipes under sink; h080 haz mechanical eqip- kitchen inop trash compactor inop wall mounted oven and broiler inop counter top stove; n040 broken windows-din... see more
Valuation:
$0
Permit #:
COD2001-19973
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior alteration to food warehouse: tile work 6 topset in men's employee changing room janitor area
Valuation:
N/A
Permit #:
12016-10000-11128
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Mop sink & electric water heater. per the applicant the project is approved by the los angeles county health department and city of los angeles bureau of sanitation 1 of 2 w #12041-10000-13455
Valuation:
N/A
Permit #:
12042-10000-10517
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to permit #12042-10000-10517 for a floor sink
Valuation:
N/A
Permit #:
12042-10001-10517
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Dig to repair water service leak
Valuation:
N/A
Permit #:
ENC13-0426
Status:
final
Fee:
$165
Permit Type:
Utilities
Building Type:
N/A
Circuit for electric water heater. 2 of 2 w #12042-10000-10517
Valuation:
N/A
Permit #:
12041-10000-13455
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Window glass broken front window screen broken heater not working properly toilet not operating properly floor tile broken in kit oven does work
Valuation:
$0
Permit #:
COD2001-19251
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Rats dead grass dirt only trash in rear is overflowing. room addition has not been completed building permit expired
Valuation:
$0
Permit #:
COD2004-11019
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior alteration to food warehouse: tile work 6 topset in men's employee changing room janitor area
Valuation:
N/A
Permit #:
12016-10000-11128
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Repairing existing electrical outlets
Valuation:
N/A
Permit #:
96041-10000-03207
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Building permit for room addition and landscape maintenance needed in front yard
Valuation:
$0
Permit #:
COD2004-19926
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Circuit for electric water heater. 2 of 2 w #12042-10000-10517
Valuation:
N/A
Permit #:
12041-10000-13455
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Landscape not maintained trash on property overgrown vegetation
Valuation:
$0
Permit #:
COD2005-00719
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Supplemental to permit #12042-10000-10517 for a floor sink
Valuation:
N/A
Permit #:
12042-10001-10517
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Minor cbmps
Valuation:
N/A
Permit #:
PCBMP13-0127
Status:
approved
Fee:
N/A
Permit Type:
Ep/gp
Building Type:
N/A
Repairing existing electrical outlets
Valuation:
N/A
Permit #:
96041-10000-03207
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
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Verified License
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Hsu - Da Wang License info
Verified License
| License # | 712058 |
| Status | Active |
| State | California |
| Type | Cabinet, Millwork And Finish Carpentry, General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Hsu - Da Wang at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Hartford Underwriters Insurance Company |
7
Permits
- Building permit records show that Hsu - Da Wang has worked on 7 permitted projects.
Hsu - Da Wang Employees
HW
Hsu Da Wang
Sole Owner
HW
Hsu-Da Wang
Owner