Updated: Jun 03, 2026
Location and Projects
Address
2290 FIRST STREET, La Verne, CA, 91750
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Northwest Mechanical Service
Northwest Mechanical Service at 2290 FIRST STREET, La Verne, CA 91750, held a HVAC/Mechanical Contractor license (#592929) with the California contractors license board with an expiration date of 10-01-1991. We last verified the license was inactive on 06-02-2026.
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 project planner to be easily matched to qualified, licensed professionals in your area.
Northwest Mechanical Service Contact Information
Phone Number: (760) 360-8443
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Address: 2290 FIRST STREET, La Verne, CA 91750
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Building Permits by Northwest Mechanical Service
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace exisitng water heater. same size/location
Valuation:
$0
Permit #:
BPL160173
Status:
ISSUED
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
Water heater replacement in garage
Valuation:
$0
Permit #:
BPL150427
Status:
ISSUED
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
Water heater replacement to dwlg
Valuation:
$0
Permit #:
BPL150277
Status:
ISSUED
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
3-ton furnace replacement
Valuation:
$0
Permit #:
BME150727
Status:
VOID
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
Water heater replacement in utility closet
Valuation:
$0
Permit #:
BPL140368
Status:
FINAL
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
Replace water heater in garage
Valuation:
$0
Permit #:
BPL140361
Status:
ISSUED
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
Water heater replacement
Valuation:
$0
Permit #:
BPL140310
Status:
ISSUED
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
5n spr ten imp american agencies interior tenant improvement
Valuation:
N/A
Permit #:
MEC00-00415
Status:
final
Fee:
$91
Permit Type:
N/A
Building Type:
N/A
**o'connell's** change out exstg air conditioning unit (roof mounted) like for like subject to field inspection entered by: ortegar
Valuation:
N/A
Permit #:
M2006-000657
Status:
final
Fee:
$93
Permit Type:
N/A
Building Type:
N/A
Hvac tenant improvement - less than 42 hp no p/c required
Valuation:
N/A
Permit #:
00044-10000-05779
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace duct and heater
Valuation:
N/A
Permit #:
99044-10000-04768
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
93-2404/000 000 MR 00
Status:
complete
Fee:
$60
Permit Type:
Mechanical work
Building Type:
Industrial park
1656sf carport # a prchy1 pn v-n 1932 24922
Valuation:
$0
Permit #:
321837
Status:
ISSUED
Fee:
$275
Permit Type:
N/A
Building Type:
N/A
1827sf carport #b prchy1 pn v-n 1827 23385
Valuation:
$0
Permit #:
321838
Status:
ISSUED
Fee:
$266
Permit Type:
N/A
Building Type:
N/A
1449sf carport #c prchy1 pn v-n 1449 18547
Valuation:
$0
Permit #:
321839
Status:
ISSUED
Fee:
$213
Permit Type:
N/A
Building Type:
N/A
756sf carport #d prchy1 pn v-n 882 11289
Valuation:
$0
Permit #:
321842
Status:
ISSUED
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Permit for 40 gallon water heater change out (same location) -
Valuation:
N/A
Permit #:
BLD15-000140
Status:
expired
Fee:
$75
Permit Type:
S-fam residential
Building Type:
N/A
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Northwest Mechanical Service Reviews
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Northwest Mechanical Service License info
Inactive License
| License # | 592929 |
| Status | Inactive |
| State | California |
| Type | Boiler, Hot Water Heating And Steam Fitting, Warm Air Heating, Ventilating And Air Conditioning, Plumbing, Refrigeration, Sheet Metal |
| Business Type | Partnership |
- 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 Northwest Mechanical Service at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 635885 |
| Status | Inactive |
| State | California |
| Type | Boiler, Hot Water Heating And Steam Fitting, Warm Air Heating, Ventilating And Air Conditioning, Plumbing, Refrigeration, Sheet Metal |
| Business Type | Partnership |
- 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 Northwest Mechanical Service 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 Northwest Mechanical Service, click “This is My Business” to update your information.
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $12,500 |
Insured
| Workers Comp Provider | Employers Compensation Insurance Company |
14
Permits
- Building permit records show that Northwest Mechanical Service has worked on 14 permitted projects.
Northwest Mechanical Service Employees
DS
Donald Lee Schmaltz
Sole Owner