Updated: Dec 14, 2025
Location and Projects
Address
22255 SEPTO STREET, Chatsworth, CA, 91311
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William Osborne Construction
William Osborne Construction at 22255 SEPTO STREET, Chatsworth, CA 91311, held a General Contractor license (#506870) with the California contractors license board with an expiration date of 03-31-1993. We last verified the license was expired on 12-13-2025.
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.
William Osborne Construction Services
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William Osborne Construction Contact Information
Phone Number: (541) 390-4541
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Address: 22255 SEPTO STREET, Chatsworth, CA 91311
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Building Permits by William Osborne Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Kitchen and bathroom (2) remodels for residential buildings (no structural changes). valuation to be verified by the field inspector. comply with department order effective date 02/05/2009. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
09016-20000-19901
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Re-roof with class a or b material weighing less than 6 pound per sq. ft. smoke detectors required. replacement of damaged framing members (less than 10% of replacement cost of building) for houses and duplexes (not including decks)
Valuation:
N/A
Permit #:
07016-20000-23756
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Kitchen remodel combined with plumbing and electrical for residential buildings (no structural changes). valuation to be verified by the field inspector
Valuation:
N/A
Permit #:
12016-20000-13838
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Repair framing/drywall and water heater in garage for (e) single family dwelling. <less than 10% damage>. comply with department order effective date 2/5/09. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
10016-20000-00368
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Proposed 23'-0'x 20'-0 bedroom addition to (e) single family dwelling, convert (e) bedroom to bathroom room & convert (e) bathroom to closet.add. 9'-0"x 10'-0 patio covered to (e) patio
Valuation:
N/A
Permit #:
08014-20000-00589
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Replace 10 windows same size and type. remodel bathroom changeout bathtub addition 2 lavs replaster and retile. paint valuation to be verified by field inspector
Valuation:
N/A
Permit #:
00016-20000-07675
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Abc zoning affidavit form for restaurant at 3220 adams ave; zone: cupd-cu-3-3; lic type: 47
Valuation:
N/A
Permit #:
1188704
Status:
issued
Fee:
$215
Permit Type:
N/A
Building Type:
N/A
Vehicle leaking oil residue note: complaints concerned is to prevent
Valuation:
$0
Permit #:
COD2014-00931
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace 6 windows (same size and location). valuation to be verified by the field inspector
Valuation:
N/A
Permit #:
04016-20000-16593
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Trashcans in public view - stacked lawn chairs on driveway
Valuation:
$0
Permit #:
COD2013-06092
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Convert exist bedroom (10 x 14') to bathroom & study room w new partition walls
Valuation:
N/A
Permit #:
00016-20000-09597
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Install strap at piers underfloor & a35 ties at floor girders & bottom plates
Valuation:
N/A
Permit #:
02016-20000-00004
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Change-out 10 windows and 2 doors (same size type and location)
Valuation:
N/A
Permit #:
02016-20000-09557
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition 8'x28 open trellis patio to rear of single family dwelling per city standard
Valuation:
N/A
Permit #:
02014-20000-02542
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Rebuild attach patio cover per city standard detail. 14'x30
Valuation:
N/A
Permit #:
04014-20000-05297
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition 10'x36 attached patio cover per l.a. city's standard. plans
Valuation:
N/A
Permit #:
06014-20000-07495
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Cars in driveway are hanging over and blocking the sidewalk
Valuation:
$0
Permit #:
COD2012-02132
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 8 x 13 open trellis at rear of single family dwelling
Valuation:
N/A
Permit #:
06014-20000-05222
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Inop on driveway
Valuation:
$0
Permit #:
COD2012-08799
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repair stucco & drywall @ front wall
Valuation:
N/A
Permit #:
02016-20000-12171
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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William Osborne Construction License info
Inactive License
| License # | 506870 |
| 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 William Osborne Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 370124 |
| 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 William Osborne Construction 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 William Osborne Construction, click “This is My Business” to update your information.
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $12,500 |
16
Permits
- Building permit records show that William Osborne Construction has worked on 16 permitted projects.
William Osborne Construction Employees
WO
William Charles Osborne
Sole Owner