Updated: Mar 29, 2026
Location and Projects
Address
17020 ATKINSON AVE, Torrance, CA, 90504
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William T Simpson Construction
Serving Torrance, California, William T Simpson Construction brings over three decades of experience to residential and small commercial projects. The company specializes in general construction, handling remodels, renovations, and repair work. William T Simpson, the principal, oversees all phases of construction, working directly with property owners to manage both interior and exterior improvements. Projects range from kitchen and bathroom remodels to structural repairs and room additions. The company serves clients in Torrance and neighboring South Bay communities. With a long-standing presence in the region, William T Simpson Construction is equipped to address both standard and unique construction needs, making use of established local connections and a thorough understanding of building codes and permitting processes in Los Angeles County.
William T Simpson Construction Services
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William T Simpson Construction Contact Information
Phone Number: (310) 327-8253
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Address: 17020 ATKINSON AVE, Torrance, CA 90504
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William T Simpson Construction Torrance
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William T Simpson Construction has a BuildZoom score of 95, which places them above 78% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
1 project
|
2024 |
Our building permit records indicate that William T Simpson Construction has worked on at least
2.0 projects over the past 2 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$50k-$100k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by William T Simpson Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
261 sf kitchen remodel to include remove a non load-bearing wall; 1 dish washer 1 sink 2 rec 10 lights 2 sw 1 oven 1 hood 1 range; remove windows/sliders on the 1'st and 2'd floor and install new (2) new bifolds on 1'st floor and 1 new bifold on 2'd floor
Valuation:
$62,000
Permit #:
RESB-08-20-41638
Status:
expired
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Int. remodel; convert (e) family room into (n) bedroom convert (e) laundry room into (n) bathroom & relocate washer/dryer (see plans & engineering) inclds meps
Valuation:
N/A
Permit #:
C2023-005842
Status:
expired
Fee:
$2,394
Permit Type:
N/A
Building Type:
N/A
57 linear 5 high retaining wall @ back yard. **permit to renew expired #40254**
Valuation:
$9,000
Permit #:
FCWL-10-22-57443
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel; remove load bearing wall at kitchen; electrical: for dishwasher disposal hood range; plumbing: (1) dishwasher (1) sink
Valuation:
$35,000
Permit #:
RESB-08-19-34516
Status:
final
Fee:
$733
Permit Type:
N/A
Building Type:
N/A
Tear off existing 2400 sf roof; install 2 layers of 40 lbs underlayment; install eagle capistranotiles 9 lbs/sf - iapmo evaluation report 1900
Valuation:
$10,000
Permit #:
RESB-09-19-35076
Status:
final
Fee:
$461
Permit Type:
N/A
Building Type:
N/A
Install (2) new ul793 smoke vents on 2x6 wood curbs. change- out 4 skylights with ul793 smoke vents using existing curbs
Valuation:
$15,000
Permit #:
2106090023
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Int remodel at bedrooms bathrooms & kitchen: incld r/r (2) slider doors. (no new sf; see plans & engineering) ***** sup 4/9/18 skong - r/r (6) windows in same location ***** --- **** sup 5/14/18 skong - reinforced kitchen wall (see plans) **** entered by: woom
Valuation:
N/A
Permit #:
C2018-001386
Status:
final
Fee:
$3,011
Permit Type:
N/A
Building Type:
N/A
Construction of 112.50 sf 2'd fl deck
Valuation:
$10,000
Permit #:
RESB-12-20-43993
Status:
final
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
(bld20-000222) plan check for installation of (4) - new ul-794 smoke vents
Valuation:
N/A
Permit #:
BPC19-001577
Status:
final
Fee:
$629
Permit Type:
Commercial
Building Type:
N/A
Permit for installation of (4) roof mounted ul-794 - smoke vents
Valuation:
N/A
Permit #:
BLD20-000222
Status:
final
Fee:
$321
Permit Type:
Commercial
Building Type:
N/A
Building (4) concrete pits on an existing slab for dock leveler installation
Valuation:
$25,900
Permit #:
1802050049
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(roll plans sent for scanning on 11-5-19) room addition (400 sf) for master bedroom; remodel kitchen bathroom master bathroom & laundry room (approx. 300 sf); 1-tub 1-washer 1-dishwasher 2-lav 1-sink 2-showers 1-toilet; 34-rec 42-lights 18-switches 1-fan 1-oven 1-warming drawer; 1-appl.vent 1-vent fan
Valuation:
$95,000
Permit #:
RESB-06-15-15879
Status:
closed - expired
Fee:
$1,972
Permit Type:
N/A
Building Type:
N/A
Remodel interior second floor remodel of existing single family dwelling. modify existing master bathroom two additional existing bathrooms and existing walk-in closet. convert existing bedroom to walk-in closet. castillian blackstone pa7 plan 3h. 5003 sq ft living 727 sq ft garage
Valuation:
$50,000
Permit #:
B12-000-078
Status:
final
Fee:
$553
Permit Type:
R-3 residence 1-2...
Building Type:
N/A
Residential new single family dwelling (guest house) adjacent to existing main single family dwelling. castillian blackstone pa7. 2623 sq ft living, 681 sq ft garage.
Valuation:
$291,119
Permit #:
B12-000-077
Status:
Final
Fee:
$12,915
Permit Type:
N/A
Building Type:
N/A
Adding 7056 sq ft office area on 1st floor and 2nd floor 6670 sq ft
Valuation:
$323,300
Permit #:
1409290093
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building (4) concrete pits on an existing slab for dock leveler installation
Valuation:
$25,900
Permit #:
1802050049
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Speculative warehouse and office building total 120 553 sf (whse = 117 313 sf office = 3 240 sf) office ceiling is designed for future office floor load mezzanine (100 psf). adequate number of restroom fixtures must be provided prior to building occupancy
Valuation:
$0
Permit #:
B200300262
Status:
final
Fee:
$51,603
Permit Type:
New commercial
Building Type:
N/A
Tenant improvmt building (1) concrete pit for dock leveler installation
Valuation:
$7,600
Permit #:
B16-001-469
Status:
final
Fee:
$585
Permit Type:
Mixed use
Building Type:
N/A
Tenant improvmt building 4 concrete pits on an existing slab for dock leveler installation
Valuation:
$10,600
Permit #:
B15-000-285
Status:
final
Fee:
$492
Permit Type:
Mixed use
Building Type:
N/A
Reconstruct 53 long x 24 wide culvert bridge
Valuation:
$300,000
Permit #:
1211010024
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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William T Simpson Construction License info
Verified License
| License # | 785863 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for William T Simpson Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
46
Permits
- Building permit records show that William T Simpson Construction has worked on 46 permitted projects.
William T Simpson Construction Employees
WS
William Thomas Simpson
Sole Owner