Updated: Jun 01, 2026
Location and Projects
Address
204 SULTANA AVENUE, Upland, CA, 91786
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John Langwasser Construction
John Langwasser Construction, 204 Sultana Ave, Upland, CA (Owned by: John Christopher Langwasser) holds a General Building license and 2 other licenses according to the California license board.
Their BuildZoom score of 94 ranks in the top 24% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring John Langwasser Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
John Langwasser Construction Services
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John Langwasser Construction Contact Information
Phone Number: (909) 353-4060
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Address: 204 SULTANA AVENUE, Upland, CA 91786
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John Langwasser Construction Reviews
1 out of 5 stars, based on
1
review
-
By Bobby C.October 9, 2022
Building Permits by John Langwasser Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
660sf solid top patio cover w/2 fans 2 outlets 8 lights and 2 switches
Valuation:
N/A
Permit #:
PMT2018-02726
Status:
final
Fee:
$353
Permit Type:
N/A
Building Type:
N/A
Water heater relocation to exterior & rear of dwelling repair small section of stucco @ rear of dwelling drywall repair paint interior and exterior of home
Valuation:
N/A
Permit #:
B201003134
Status:
final
Fee:
$84
Permit Type:
Miscellaneous
Building Type:
N/A
Comparable re-roof with t-off 18 sq
Valuation:
$8,100
Permit #:
R201200017
Status:
ISSUED
Fee:
$264
Permit Type:
Roof
Building Type:
N/A
(tidemark) building permit/major construction - (tidemark) building permit/major const. - pmt
2008-02-21
Family room and dining room with patio cover
Valuation:
$30,953
Permit #:
PMT07-00528
Status:
final
Fee:
$535
Permit Type:
N/A
Building Type:
N/A
Bathroom addition to existing master bedroom (7 x 13')
Valuation:
N/A
Permit #:
B200202754
Status:
final
Fee:
$387
Permit Type:
Residential addition
Building Type:
N/A
Remove tub and install shower
Valuation:
$3,500
Permit #:
B201503394
Status:
final
Fee:
$156
Permit Type:
N/A
Building Type:
N/A
Remove existing and reconstruct deck at front of residence
Valuation:
N/A
Permit #:
PMT2002-00781
Status:
expired
Fee:
$105
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
John Langwasser Construction License info
Verified License
| License # | 778396 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for John Langwasser Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 991335 |
| Status | Active |
| City | Glendora |
| Type | Contractor |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of March, 2018. Check the current license status of John Langwasser Construction with the The City of Glendora, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 991335 |
| Status | Inactive |
| State | California |
| Type | General Building |
| 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 John Langwasser Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Insured
| Insurer | Exempt |
Bonded
| Bonded Agent | Financial Pacific Insurance Company |
| Bond Value | $15,000 |
7
Permits
- Building permit records show that John Langwasser Construction has worked on 7 permitted projects.
John Langwasser Construction Employees
JL
John Christopher Langwasser
Owner
JL
John Michael Langwasser
Sole Owner
Unprofessional, no attention to detail. Leaves his tools throughout the project. Comes and goes when he wants. Would never hire him.