Updated: Mar 27, 2026
Location and Projects
Address
1345 S Diamond Bar Blvd, Diamond Bar, CA, 91765
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Xinlongyuan Construction Inc
Xinlongyuan Construction Inc, 1345 S Diamond Bar Blvd, Diamond Bar, CA (Employee: Jiulong Zhao) holds a General Building license according to the California license board.
Their BuildZoom score of 95 ranks in the top 22% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Xinlongyuan Construction Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Xinlongyuan Construction Inc Services
Start a project today:
Custom Home Build
New Home Construction
Medium Multi-Family New Con...
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Roofing
Hardwood Flooring
Carpets
Laminate Flooring
Other Flooring
Framing
Wood Fences
Drywall
Interior Plaster
Brick and Blockwork
Other Masonry
Flatwork Concrete
Foundations
Other Concrete
Demolition
Paving, Driveways, and Side...
Excavation and Grading
Other Site Work
Garage Construction
Gutters and Flashing
Skylights
Xinlongyuan Construction Inc Contact Information
Phone Number: (626) 560-6620
Address: 1345 S Diamond Bar Blvd, Diamond Bar, CA 91765
Xinlongyuan Construction Inc Diamond Bar
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Xinlongyuan Construction Inc has a BuildZoom score of 95, which places them above 78% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
2 projects
|
2024 |
Our building permit records indicate that Xinlongyuan Construction Inc has worked on at least
3.0 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 |
|
1 project
|
$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.
Building Permits by Xinlongyuan Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Tenant improvement of a massage. total 875 sf. new interior wall partitions building (4) massage (1) laundry (1) ada restroom (1) waiting (1) office (1) storage.install (1) clothes washer (1) dryer (1) w/h (1) utility sink duct work (2) new exhaust system duct some new air ducts some new lights new outlets new swithches rev: sewer line location
Valuation:
$35,000
Permit #:
COMBC-2024-00048
Status:
final
Fee:
$4,581
Permit Type:
N/A
Building Type:
N/A
Reroof with same tile replace roofing felt sheathing plywood and fascia board house only
Valuation:
$5,400
Permit #:
B24-46938
Status:
final
Fee:
N/A
Permit Type:
Rr residential al...
Building Type:
N/A
Pool demolish & complete removal for: 445 w rowland st. compaction report required at final inspection
Valuation:
N/A
Permit #:
215078
Status:
issued
Fee:
$336
Permit Type:
N/A
Building Type:
N/A
Pool demolish & complete removal for: 445 w rowland st. compaction report required at final inspection
Valuation:
N/A
Permit #:
215077
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Xinlongyuan Construction Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Xinlongyuan Construction Inc License info
Verified License
| License # | 1118997 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Xinlongyuan Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $25,000 |
Xinlongyuan Construction Inc Employees
JZ
Jiulong Zhao
Rmo / Ceo / Pres