Updated: Apr 30, 2026
Location and Projects
Address
518-A W DUARTE ROAD, Monrovia, CA, 91016
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Wsdg HVAC/Mechanical Contractor
Wsdg Inc at 518-A W DUARTE ROAD, Monrovia, CA 91016, held a HVAC/Mechanical Contractor license (#772515) with the California contractors license board with an expiration date of 12-31-2009. We last verified the license was revoked on 04-29-2026.
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.
Wsdg Inc Contact Information
Phone Number: (626) 930-0420
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Address: 518-A W DUARTE ROAD, Monrovia, CA 91016
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Torry hills; demolish partitions electrical hvac ductwork only no new plumbing for existing office space****ip-2-1***95-0554
Valuation:
$0
Permit #:
383690
Status:
Completed
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/alt tenant im...
Torry hills; demolish partitions electrical hvac ductwork only no new plumbing for existing office space****ip-2-1***95-0554
Valuation:
$0
Permit #:
388171
Status:
Issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 2 hvac's (split heat pump systems) 2 bathroom and 3 environmentalll vents and inlets/outlets
Valuation:
N/A
Permit #:
06044-20000-10261
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Plan check for replacing exhaust fans and evap cooler for existing type i shop hood
Valuation:
N/A
Permit #:
07044-10000-10895
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace two (2) air conditioning units (no increase in dead load) - will use existing screening
Valuation:
N/A
Permit #:
MEC2006-00383
Status:
final
Fee:
N/A
Permit Type:
Mechanical permit
Building Type:
N/A
Replace two (2) air conditioning units (no increase in dead load) - will use existing screening
Valuation:
N/A
Permit #:
MEC2006-00383
Status:
final
Fee:
N/A
Permit Type:
Mechanical permit
Building Type:
N/A
Replace two (2) air conditioning units (no increase in dead load) - will use existing screening
Valuation:
N/A
Permit #:
MEC2006-00383
Status:
final
Fee:
N/A
Permit Type:
Mechanical permit
Building Type:
N/A
Suppl. permit to permit #05044-10000-03078 for (4) duct type smoke detectors
Valuation:
N/A
Permit #:
05044-10001-03078
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Install new hvac system for 3 story health center
Valuation:
$0
Permit #:
04044-10000-05870
Status:
Permit Finaled
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/a
New air handler and new ducts for pumpkin patch
Valuation:
$0
Permit #:
B00-025-315
Status:
Final
Fee:
$63
Permit Type:
N/A
Building Type:
-
Supplemental permit - change of contractor
Valuation:
N/A
Permit #:
02044-90001-09610
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replacing existing air conditioning unit
Valuation:
N/A
Permit #:
BM20050838
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Change out existing hvac system
Valuation:
N/A
Permit #:
05044-10000-12851
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New hvac system for new library
Valuation:
N/A
Permit #:
01044-10000-12539
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New hvac system for new library
Valuation:
N/A
Permit #:
01044-10000-12539
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Change out existing hvac system
Valuation:
N/A
Permit #:
05044-10000-12851
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New china town library building
Valuation:
N/A
Permit #:
00044-10000-10635
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
1 fau and 1 compressor
Valuation:
N/A
Permit #:
BM20060671
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Supplemental permit
Valuation:
N/A
Permit #:
02044-90002-09610
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Hvac mechanical permit
Valuation:
N/A
Permit #:
02044-10000-01009
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
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Wsdg Inc License info
Inactive License
| License # | 772515 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation |
- 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 Wsdg Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
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BuildZoom Score
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- *No active license on file. If you are Wsdg Inc, click “This is My Business” to update your information.
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $12,500 |
Insured
| Workers Comp Provider | Sparta Insurance Company |
14
Permits
- Building permit records show that Wsdg Inc has worked on 14 permitted projects.
Wsdg Inc Employees
SH
Sylvester Hollins
Rmo / Ceo / Pres