Updated: Jun 17, 2026
Location and Projects
Address
P O BOX 659, Antioch, CA, 94509
Use our bidding system to
request a quote
Diamond Mechanical, Inc
Diamond Mechanical, Inc at P O BOX 659, Antioch, CA 94509, held a HVAC/Mechanical Contractor license (#139508) with the California contractors license board with an expiration date of 08-31-1999. We last verified the license was expired on 06-16-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our bidding system to be easily matched to qualified, licensed professionals in your area.
Diamond Mechanical, Inc Contact Information
Phone Number: (510) 757-4640
Edit
Address: P O BOX 659, Antioch, CA 94509
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Building Permits by Diamond Mechanical, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Mechanical for oakland community housing units. seperate permits for seperate buildings missed at issue.
Valuation:
$0
Permit #:
M9701522
Status:
Final
Fee:
$41
Permit Type:
N/A
Building Type:
N/A
Mechanical for oakland community housing units. seperate permits for seperate buildings missed at issue #2.
Valuation:
$0
Permit #:
M9701523
Status:
Final
Fee:
$41
Permit Type:
N/A
Building Type:
N/A
New 5 ton unit carrier 38tm060 coil 40ma060
Valuation:
N/A
Permit #:
93080038
Status:
final
Fee:
$99
Permit Type:
HVAC split system
Building Type:
N/A
Addition hvac mehcanical to bld1995-104593
Valuation:
N/A
Permit #:
BLD1995-105666
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Archive permit: 9300000807-m -
Valuation:
N/A
Permit #:
BI-1993-1266
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replacing furnace and adding air conditioning
Valuation:
$0
Permit #:
BH97001214
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition air conditioning furnace replacement
Valuation:
$0
Permit #:
BH93003156
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical permit - furnace
Valuation:
N/A
Permit #:
BIM0000179140
Status:
final
Fee:
$33
Permit Type:
N/A
Building Type:
N/A
Air conditioner and furnace
Valuation:
$0
Permit #:
BH92002149
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Change furnace/ad & coil
Valuation:
$0
Permit #:
BH94001529
Status:
Withdraw
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Air cond change out
Valuation:
N/A
Permit #:
BIM0000182408
Status:
final
Fee:
$25
Permit Type:
N/A
Building Type:
N/A
Air cond change out
Valuation:
N/A
Permit #:
BIM0000182410
Status:
final
Fee:
$25
Permit Type:
N/A
Building Type:
N/A
Air cond change out
Valuation:
N/A
Permit #:
BIM0000182409
Status:
final
Fee:
$25
Permit Type:
N/A
Building Type:
N/A
Air conditioning replace/heater
Valuation:
$0
Permit #:
BH92002561
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
5 a/c units, 2 envir air ducts at eastmont town center for library.
Valuation:
$0
Permit #:
M9800583
Status:
Final
Fee:
$229
Permit Type:
N/A
Building Type:
N/A
To final #209992
Valuation:
N/A
Permit #:
BIM0000222332
Status:
final
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Furnace & air conditioning
Valuation:
N/A
Permit #:
BIM0000209992
Status:
expired
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Air conditioner
Valuation:
N/A
Permit #:
BIM0000210863
Status:
final
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Furnace/air cond
Valuation:
N/A
Permit #:
BIM0000200493
Status:
final
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Air conditioner
Valuation:
N/A
Permit #:
BIM0000194413
Status:
final
Fee:
$73
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
149
BZ Score
$11.9K
Avg Project
-
Projects
149
BZ Score
$10.5K
Avg Project
-
Projects
146
BZ Score
$9.2K
Avg Project
-
Projects
Diamond Mechanical, Inc Reviews
BuildZoom hasn't received any reviews for Diamond Mechanical, Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you an HVAC pro in your area today
We'll search our vast network of HVAC Pros and connect
you with one that meets your needs today.
Diamond Mechanical, Inc License info
Inactive License
| License # | 139508 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal, Boiler, Hot Water Heating And Steam Fitting, Refrigeration |
- 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 Diamond Mechanical, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Diamond Mechanical, Inc, click “This is My Business” to update your information.
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $7,500 |
Insured
| Workers Comp Provider | California Compensation Insurance Company |
91
Permits
- Building permit records show that Diamond Mechanical, Inc has worked on 91 permitted projects.
Diamond Mechanical, Inc Employees
AJ
Antoinette Jorge
Officer
AJ
Antoinette Jorge
Officer
JS
Jack W Mannie Sr
Rmo / Ceo / Pres
JJ
Jack William Mannie Jr
Ceo / President