Updated: May 31, 2026
Location and Projects
Address
4124-A OKI STREET, Acton, CA, 93510
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JOHN WILLIAMS Construction
Based in Acton, CA, John Williams has been active in the construction industry for 39 years. Serving residential clients throughout the Acton area, he brings decades of experience to a variety of home improvement and construction projects. His long-standing presence in the community reflects a seasoned understanding of local building codes and regional construction needs. Williams manages all aspects of the building process, from planning to completion, and works directly with homeowners to ensure projects are aligned with their goals. With nearly four decades in the trade, he provides experienced guidance on new builds, renovations, and property upgrades tailored for Acton's unique landscape.
JOHN WILLIAMS Services
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JOHN WILLIAMS Contact Information
Phone Number: (626) 451-0737
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Address: 4124-A OKI STREET, Acton, CA 93510
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Go on line and check the status of your application correction and approval letters will not be mailed. install a (13.6)kwh (1) battery energy storage system on a (1)-story single family dwelling. install listed smoke detectors and carbon monoxide alarms or combination smoke and carbon monoxide detectors/alarms in the existing dwelling. bc fpd sra-moderate
Valuation:
N/A
Permit #:
B-236104
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single residence
Southeastern san diego. combination building permit for foundation repair for extg single family residence. rm-2-5. promise zone. transit priority area. geo haz 52
Valuation:
$17,500
Permit #:
2406040
Status:
complete
Fee:
$790
Permit Type:
Add/alt 1 or 2 fa...
Building Type:
N/A
Supplemental permit to permit #18042-30000-14710 to addition (1) earthquake valve (1) water service (1) prv (1) backwater valve & (1) additional gas outlet to combine with previously charged (3) original fixtures to bring total to 4 gas outlets
Valuation:
N/A
Permit #:
18042-30001-14710
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Re-roof with class a or b material weighing less than 6 pounds per sq. ft. over new solid sheathing 40 squares. for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roofing rating council (crrc). cool roof may be required for non-residential buildings per title 24 part 6 section 149(b)
Valuation:
$10,000
Permit #:
18016-20000-03024
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Roofing re-roof with class a or b material weighing less than 6 pounds per sq. ft. over existing solid sheathing 59 squares. for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roofing rating council (crrc). cool roof may be required for non-residential buildings per title 24 part 6 section 149(b)
Valuation:
$9,500
Permit #:
18016-20000-03021
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplementl permit to permit #18042-30000-14700 to addition (1) eartquake valve (1) water service (1) prv (1) backwater valve (1) building drain & (1) additional gas outlet to combine with previously charged (3) original fixtures to bring total to 4 gas outlets
Valuation:
N/A
Permit #:
18042-30001-14700
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental permit to permit #18042-30000-14696 to addition (1) earthquake valve (1) water service (1) prv (1) building drain & (1) additional gas outlet to combine with previously charged (3) original fixtures for a total of 4 gas outlets
Valuation:
N/A
Permit #:
18042-30001-14696
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Encanto neighborhoods; combination permit for new city standard retaining wall per information bulletin 222 for existing single family home. base zone: rs-1-7. geo: 53
Valuation:
$22,080
Permit #:
2353265
Status:
complete
Fee:
$1,255
Permit Type:
Acc struct to 1 o...
Building Type:
N/A
Supplemental permit to permit #18042-30000-14690 to addition (1) water service (1) prv (1) building drain & (1) additional gas outlet to combine with previously charged (3) original fixtures for a total of 4 gas outlets
Valuation:
N/A
Permit #:
18042-30001-14690
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental permit to permit #18042-30000-14686 to addition (1) water service (1) prv (1) building drain & (1) additional gas outlet to combine with previously charged (3) original fixtures for a total of 4 gas outlets
Valuation:
N/A
Permit #:
18042-30001-14686
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Roofing re-roof with class a or b material weighing less than 6 pounds per sq. ft. over existing solid sheathing 59 squares. for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roofing rating council (crrc). cool roof may be required for non-residential buildings per title 24 part 6 section 149(b)
Valuation:
$9,500
Permit #:
18016-20000-03021
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Excavate gas trench for pge to install new gas service. locin parking area only not into roadway
Valuation:
N/A
Permit #:
202003328
Status:
issued
Fee:
$327
Permit Type:
Encroachment - minor
Building Type:
N/A
Convert attached garage into an accessory dwelling unit per ab 494 & sb 229
Valuation:
$17,000
Permit #:
19016-20000-34809
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New laundry room 3 washers 3 dryers 1 sink 1 tankless water heater 1 floor drain
Valuation:
N/A
Permit #:
18042-30000-14686
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Install 2.5 ton central hvac unit and duct work
Valuation:
N/A
Permit #:
19044-20000-14880
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(e-plan) roof mounted photovoltaic w panel upgrade
Valuation:
N/A
Permit #:
00871483-RRA
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
200 amp service upgrade
Valuation:
N/A
Permit #:
19041-20000-49752
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(2) 60 amp sub panel 8 outlets 2 light
Valuation:
N/A
Permit #:
18041-30000-22621
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Panel change to 100 amp
Valuation:
N/A
Permit #:
18041-10000-28312
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Change (e) water heater
Valuation:
N/A
Permit #:
18042-10000-18013
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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JOHN WILLIAMS License info
Verified License
| License # | 517218 |
| 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 WILLIAMS at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 775360 |
| 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 WILLIAMS at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 383471 |
| 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 WILLIAMS at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Acceptance Indemnity Insurance Company |
98
Permits
- Building permit records show that JOHN WILLIAMS has worked on 98 permitted projects.
JOHN WILLIAMS Employees
JW
John Bryan Williams
Sole Owner
JW
John Gregory Williams
Sole Owner
JI
John Monroe Williams Iii
Sole Owner