Updated: May 31, 2026
Location and Projects
Address
20915 TRIGGER LANE, Diamond Bar, CA, 91765
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Jiancai Construction Roofer
Jiancai Construction, 20915 Trigger Ln, Diamond Bar, CA (Employees: Chili Guan, Chili Guan, and Jiancai Chen) holds a General Building license and 3 other licenses according to the California license board.
Their BuildZoom score of 110 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Jiancai Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Jiancai Construction Contact Information
Phone Number: (626) 418-7936
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Address: 20915 TRIGGER LANE, Diamond Bar, CA 91765
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Jiancai Construction Diamond Bar
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Jiancai Construction has a BuildZoom score of 110, which places them above 96% of 336,931 contractors in California.
Activity
|
1 project
|
2026 |
|
12 projects
|
2025 |
|
12 projects
|
2024 |
|
7 projects
|
2023 |
Our building permit records indicate that Jiancai Construction has worked on at least
32.0 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
|
19 projects
|
Roofing projects |
Analyzing permits over the last 4 years shows that Jiancai Construction mostly works on
roofing project
projects.
Pricing
|
2 projects
|
< $5k |
|
18 projects
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
The typical size of their permits is approximately $12,298. This graph shows the distribution of these job values.
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.
Reroof house + attached garage tear off existing underlayment and shingles and repair the rotten roof sheathing lay new underlayment and shingles; replace roof fascia and paint
Valuation:
$20,000
Permit #:
RES-ROOF-25-005
Status:
complete
Fee:
$168
Permit Type:
Reroofing
Building Type:
N/A
Tear off shingles and reroof with 1821 sqft. of shingles. paint inside and outside of home. also replace 1821 sqft of sheathing. class a roof covering required
Valuation:
$17,000
Permit #:
B25-0653
Status:
final
Fee:
$764
Permit Type:
N/A
Building Type:
N/A
Re-roof with class a or b material weighing less than 6 pounds per sq. ft. over existing solid sheathing ___21___squares. class a roof covering is required within very high fire hazard severity zone(vhfhsz). for residential roof replacement>50% of the total roof area apply cool roof product labeled and certified by cool roof rating council (crrc). cool roof may be required for non-res... see more
Valuation:
$14,558
Permit #:
24016-30000-35356
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Re-roof with class a or b roof covering material weighing less than 6 pounds per sq. ft. over existing solid sheathing (18) squares. class a roof covering is required within very highfire hazard severity zone (vhfhsz). for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roof rating council (crrc). cool roof may be require... see more
Valuation:
$12,500
Permit #:
24016-20000-28367
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Re-roof with class a or b material weighing less than 6 pounds per sq. ft. over new solid sheathing __14___squares. class a roof covering is required within very high fire hazard severity zone (vhfhsz). for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roof rating council (crrc). cool roof may be required for non-reside... see more
Valuation:
$9,900
Permit #:
24016-10000-24932
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Re-roof with class a or b material weighing less than 6 pounds per sq. ft. over new solid sheathing ___10___squares. class a roof covering is required within very high fire hazard severity zone (vhfhsz). for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roof rating council (crrc). cool roof may be required for non-resid... see more
Valuation:
$6,419
Permit #:
24016-10000-22204
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Kitchen remodeling in kind. bathroom remodeling in kind. rewiring all the electrical circuits. install all new light fixtures. reinstall existing water heater. replace furnace and less than 25 of ductwork in garage
Valuation:
$76,075
Permit #:
202403047052
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Interior remodel at 2nd fl. remodel (e) kitchen & living room. relocate 1 bathroom. remodel 1 full bathoom & 1 half restroom. relocate 1 laundry room to have dining area. addition & remodel closets in (e) bedrooms. replace side & rear windows
Valuation:
$80,000
Permit #:
202103237135
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Permit to complete work started on b19-0613 to change out cooling unit at rear of building. *carbon monoxide alarms/smoke alarms are required for this project per 2016 crc section r314/r315
Valuation:
N/A
Permit #:
B24-0867
Status:
final
Fee:
$179
Permit Type:
N/A
Building Type:
N/A
Tear off & r/r with new comparable shingle(19)sq. remodel kitchen unit #4 due to damage
Valuation:
N/A
Permit #:
212856
Status:
complete
Fee:
$361
Permit Type:
N/A
Building Type:
N/A
Tear of existing shingles and reroof with 3468 sqft of shingles. also replace fascia. class a roof covering required
Valuation:
$22,300
Permit #:
B25-1388
Status:
final
Fee:
$934
Permit Type:
N/A
Building Type:
N/A
Remodel kitchen in kind. remodel bathroom in kind. rewire all the electrical circuits replace furance. install new light fixtures for the whole house
Valuation:
N/A
Permit #:
E202403042817
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tear off and reroof main house and attached garage- change of color from amber (brown) to midnight (gray)
Valuation:
$18,000
Permit #:
RRF25-0215
Status:
complete
Fee:
$605
Permit Type:
N/A
Building Type:
N/A
Remodel kitchen 1 full and 1 half bathroom. renew all wiring in the unit. addition light fixtures and receptcles addition sub-panel 70 amp. refer to building permit 2021 0323 7135
Valuation:
N/A
Permit #:
E202107294681
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical. for int. tenant improvement. for (n) massage spa; construct (n) partition walls for (n) treatment rooms break room & (n) front counter area ***massage on the beach***
Valuation:
N/A
Permit #:
M2023-003040
Status:
final
Fee:
$236
Permit Type:
N/A
Building Type:
N/A
Electrical. for int. tenant improvement. for (n) massage spa; construct (n) partition walls for (n) treatment rooms break room & (n) front counter area ***massage on the beach***
Valuation:
N/A
Permit #:
E2023-000874
Status:
final
Fee:
$618
Permit Type:
N/A
Building Type:
N/A
Int. tenant improvement. for (n) massage spa; construct (n) partition walls for (n) treatment rooms break room & (n) front counter area ***massage on the beach*** ***cofo in file***
Valuation:
N/A
Permit #:
B2023-000848
Status:
final
Fee:
$2,872
Permit Type:
N/A
Building Type:
N/A
Plumbing. for int. tenant improvement. for (n) massage spa; construct (n) partition walls for (n) treatment rooms break room & (n) front counter area ***massage on the beach***
Valuation:
N/A
Permit #:
P2023-000875
Status:
final
Fee:
$915
Permit Type:
N/A
Building Type:
N/A
Replace front windows that facing street. new windows to be aluminum clad wood center window will be fixed and two sides will be casement in the existing opening. u factor
Valuation:
$3,000
Permit #:
202111011559
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Apartment b: new wiring for whole apartment new lights switches and outlet for kitchen living room two bathrooms two bdrms and hallway. adding a new electrical panel at the corner of kitchen also new smoke detectors
Valuation:
N/A
Permit #:
E20201221946
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Jiancai Construction Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Jiancai Construction License info
Verified License
| License # | 1141118 |
| Status | Active |
| State | California |
| Type | General Building |
| Date Issued | 07-29-2025 |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Jiancai Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1071081 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Jiancai Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 1062125 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Jiancai Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1097425 |
| Status | Inactive |
| State | California |
| Type | General Building |
| 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 Jiancai Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Insured
| Insurer | State National Insurance Company Inc |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
38
Permits
- Building permit records show that Jiancai Construction has worked on 38 permitted projects.
Jiancai Construction Employees
CG
Chili Guan
Member
CG
Chili Guan
Member
JC
Jiancai Chen
Sole Owner
JH
Jiancai Hu
Rmm
JC
Jiancai Chen
Sole Owner
JH
Jiancai Hu
Rmm
TC
Ting Chen
Officer