Updated: Dec 31, 2025
Location and Projects
Address
PO BOX 3858, San Dimas, CA, 91773
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HP Mechanical Inc
HP Mechanical Inc, San, Po Box 3858, San Dimas, CA (Employees: Kevin Robert Duffield and Tina Ann Duffield) holds a Warm Air Heating, Ventilating And Air Conditioning, Electrical license and 1 other license according to the California license board.
Their BuildZoom score of 103 ranks in the top 10% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring HP Mechanical Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
HP Mechanical Inc Contact Information
Phone Number: (909) 821-0151
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Address: PO BOX 3858, San Dimas, CA 91773
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HP Mechanical Inc San Dimas
Quality
103
90th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
HP Mechanical Inc has a BuildZoom score of 103, which places them above 90% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
8 projects
|
2023 |
Our building permit records indicate that HP Mechanical Inc has worked on at least
11.0 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
|
Mechanical projects |
|
3 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that HP Mechanical Inc mostly works on
hvac project
and mechanical project
projects.
Pricing
|
1 project
|
< $5k |
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.
Install (n) air conditioning unit under patio w air handler in (e) furnace closet. ***cheers# 423-a020081195a*** ***30 minimum setback from property line required for air conditioning units***
Valuation:
N/A
Permit #:
M2023-004919
Status:
final
Fee:
$161
Permit Type:
N/A
Building Type:
N/A
Wcd west coast dental- change out 200amp disconnect switch
Valuation:
N/A
Permit #:
ELE25-00363
Status:
final
Fee:
$93
Permit Type:
N/A
Building Type:
N/A
Install 1 (n) air conditioning unit in front yard ***cheers # 422-a020181375a*** ***30” setback to property line required for air conditioning units***
Valuation:
N/A
Permit #:
M2022-007944
Status:
expired
Fee:
$121
Permit Type:
N/A
Building Type:
N/A
Replace air conditioning units
Valuation:
N/A
Permit #:
25044-90000-04466
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
(b) plan check for offsite improvements
Valuation:
N/A
Permit #:
ELPC23-000021
Status:
approved
Fee:
$644
Permit Type:
Sewer
Building Type:
N/A
Vav relocation
Valuation:
$2,500
Permit #:
BS2407347
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical for 2 subpanels in storage area (100 amp and 200 amp)
Valuation:
N/A
Permit #:
2208290020
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plan check for offsite improvements
Valuation:
N/A
Permit #:
ELPC23-000006
Status:
filed
Fee:
$1,801
Permit Type:
St & st lt & swr
Building Type:
N/A
Plan check for proposed lot subdivision with single family r
Valuation:
N/A
Permit #:
MAP22-000026
Status:
filed
Fee:
$1,800
Permit Type:
Parcel map
Building Type:
N/A
(b) permit for 88, 777 sf precise grading 8, 520 sf of - concrete paving and driveway and onsite water and sewer
Valuation:
N/A
Permit #:
BLD21-005721
Status:
final
Fee:
$6,259
Permit Type:
S-fam residential
Building Type:
N/A
(b) permit to construct 6'h 740 lf block wall; 6'h (3'h - retaining) 375 lf combo wall; 6'h (4.5'h retaining) 283 lf combo wall; and remove existing chain link fence
Valuation:
N/A
Permit #:
BLD21-005722
Status:
final
Fee:
$737
Permit Type:
S-fam residential
Building Type:
N/A
[set id: bpc22-001626] (b) plan check for 91, 036 sf - precise grading with 34, 818sf of paving; to include 6 h blockwall of 550 lf; and 36 h block wall at 25 lf; combo wall 3 ret & 6'h wall 640lf; 7 h wrought iron fence 35 lf; and lot striping
Valuation:
N/A
Permit #:
BPC22-001626
Status:
final
Fee:
$1,215
Permit Type:
S-fam residential
Building Type:
N/A
Install (n) air conditioning disconnect switch
Valuation:
N/A
Permit #:
E2022-007954
Status:
expired
Fee:
$88
Permit Type:
N/A
Building Type:
N/A
Permit offsite improvements for miller ave
Valuation:
N/A
Permit #:
ELPT22-000397
Status:
triage
Fee:
$445
Permit Type:
Street & sewer
Building Type:
N/A
(b) eugenia 8-homes - tract 17784
Valuation:
N/A
Permit #:
LSPC22-000019
Status:
filed
Fee:
$1,300
Permit Type:
Residential
Building Type:
N/A
(2) (set id; bpc21-001023) plan check for 38, 860 sf of preci - grading 10, 158 sf of asphalt paving 248 lf x 36 wide concrete swale 628 lf of 6 onsite sewer line 437 lf of concrete curb 3, 424 sf of concrete paving parking lot striping 6 x 296 lf concrete block wall 3 water service (1) underground chamber (wqmp) (2) catch basins 3 retaining + 6 screen combination wall x 424 lf and 40... see more
Valuation:
N/A
Permit #:
BPC21-001023
Status:
final
Fee:
$895
Permit Type:
M-fam residential
Building Type:
N/A
Permit for construction off-site improvements street & sewer
Valuation:
N/A
Permit #:
ELPT19-001551
Status:
final
Fee:
$2,344
Permit Type:
Street & sewer
Building Type:
N/A
Plan check off-site improvement for 17-unit apartment compl
Valuation:
N/A
Permit #:
ELPC20-000065
Status:
approved
Fee:
$620
Permit Type:
St/st lt/swr/sd
Building Type:
N/A
Permit for construction of off-site improvenments for single
Valuation:
N/A
Permit #:
ELPT20-000081
Status:
final
Fee:
$905
Permit Type:
Street & storm drain
Building Type:
N/A
(b) plan check for off-site improvements for saber newport a
Valuation:
N/A
Permit #:
ELPC23-000020
Status:
filed
Fee:
$3,366
Permit Type:
St & st lt & swr
Building Type:
N/A
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BZ Score
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Avg Project
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BZ Score
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BZ Score
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Avg Project
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Projects
HP Mechanical Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
HP Mechanical Inc License info
Verified License
| License # | 856371 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Electrical |
| Business Type | Corporation |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for HP Mechanical Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Unverified License
| Status | Unable To Verify |
| Business Type | Corporation |
- BuildZoom was not able to verify this license with the licensing board
This is a sample of licensing data; click here to access a complete history.
103
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
108
Permits
- Building permit records show that HP Mechanical Inc has worked on 108 permitted projects.
HP Mechanical Inc Employees
KD
Kevin Robert Duffield
Rmo / Ceo / Pres
TD
Tina Ann Duffield
Officer