Updated: May 06, 2026
Location and Projects
Address
805 E CROWTHER AVE, Placentia, CA, 92870
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Lang Plumbing Air Conditioning & Heating
Lang Plumbing Air Conditioning & Heating at 805 E CROWTHER AVE, Placentia, CA 92870, held a HVAC/Mechanical Contractor license (#454110) with the California contractors license board with an expiration date of 03-31-2012. We last verified the license was expired on 05-05-2026.
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.
Lang Plumbing Air Conditioning & Heating Services
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Lang Plumbing Air Conditioning & Heating Contact Information
Phone Number: (714) 525-3524
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Address: 805 E CROWTHER AVE, Placentia, CA 92870
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Building Permits by Lang Plumbing Air Conditioning & Heating
This is a sample of this contractor's permits. Click here to access their complete permit history.
Comm'l mechanical permit - replacement of a 40, 000 btu furnace and 2.5 ton roof mounted air conditioning model: pgd330040k00*c weight: 309#
Valuation:
N/A
Permit #:
MEC11-00040
Status:
complete
Fee:
$106
Permit Type:
N/A
Building Type:
N/A
Hvac-mod changeout furnace unit only. install new 5 ton f/a unit
Valuation:
N/A
Permit #:
H01-010-094
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repipe copper repipe throughout does not include from street to house
Valuation:
N/A
Permit #:
H02-060-107
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install commercial air conditioning & 6 exhaust fans
Valuation:
N/A
Permit #:
00019716-CTI
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 50 ton air conditioning & supports
Valuation:
N/A
Permit #:
00138519-MISC
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 50 ton air conditioning & supports
Valuation:
N/A
Permit #:
00138520-MBP
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type repairs. reroof over existing w fiberglass cap sheet roofview pdf file
Valuation:
N/A
Permit #:
27043
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$0
Permit #:
8903-578
Status:
PO OPEN
Fee:
$16
Permit Type:
Residence
Building Type:
N/A
No Description Available
Valuation:
$0
Permit #:
9311-014
Status:
FINALED
Fee:
$50
Permit Type:
Commercial
Building Type:
N/A
No Description Available
Valuation:
$0
Permit #:
9311-015
Status:
FINALED
Fee:
$50
Permit Type:
Commercial
Building Type:
N/A
Plumbing heating and air conditioning contractor
Valuation:
$0
Permit #:
BUS1998-012475
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type plumbing. gas line stub out only
Valuation:
N/A
Permit #:
21664
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replacement of compressor for air conditioning
Valuation:
$0
Permit #:
MEC2004-01137
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type h/ac. install hvac
Valuation:
N/A
Permit #:
28199
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type electric. install hvac
Valuation:
N/A
Permit #:
28200
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type repairs. reroof over existing w fiberglass cap sheet roofview pdf file
Valuation:
N/A
Permit #:
27043
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type h/ac. fau/ac
Valuation:
N/A
Permit #:
7497
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type h/ac
Valuation:
N/A
Permit #:
19275
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$0
Permit #:
9005-649
Status:
PO OPEN
Fee:
$9
Permit Type:
Single family dwe...
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
0311-280
Status:
expired
Fee:
$114
Permit Type:
N/A
Building Type:
N/A
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Lang Plumbing Air Conditioning & Heating License info
Inactive License
| License # | 454110 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Plumbing |
| 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 Lang Plumbing Air Conditioning & Heating 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 Lang Plumbing Air Conditioning & Heating, click “This is My Business” to update your information.
Bonded
| Bonded Agent | Suretec Insurance Company |
| Bond Value | $12,500 |
17
Permits
- Building permit records show that Lang Plumbing Air Conditioning & Heating has worked on 17 permitted projects.
Lang Plumbing Air Conditioning & Heating Employees
JS
John Howard Starn
Rme
RD
Roger Michael Duffin
Sole Owner
WL
William Edward Lang
Rme