Updated: Aug 02, 2026
Location and Projects
Address
309 CORNWALL STREET, San Francisco, CA, 94118
Use our bidding system to
request a quote
Chester Woo Electrician
Chester Woo, 309 Cornwall St, San Francisco, CA (Owned by: Chester Woo, Aaron Keith Woo, Timothy Chester Woo) holds a Electrical license and 3 other licenses according to the California license board.
Their BuildZoom score of 104 ranks in the top 9% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Chester Woo, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Chester Woo Contact Information
Phone Number: (415) 517-6778
Edit
Address: 309 CORNWALL STREET, San Francisco, CA 94118
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove existing federal pacific electrical panel and install new cutler & hammer 8-16 load center with 70 amp main disconnect. #4 awg to panel. #8 awg 40 amp to subpanel 5 circuits 150 amp main disconnect
Valuation:
N/A
Permit #:
E202501079196
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove existing federal pacific electrical panel and install new cutler & hammer 8-16 load center with 70 amp main disconnect. #4 awg to panel. #8 awg 50 amp to subpanel 2 circuits 150 amp main disconnect
Valuation:
N/A
Permit #:
E202501079195
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Apartment 4. remove ceramic fuse/fuse block. use existing panel as junction box. pull curcuits to alleyway circuit braker panel. no new circuits repull only
Valuation:
N/A
Permit #:
E202404243946
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Apartment 3. remove ceramic fuse/fuse block. use existing panel as junction box. pull curcuits to alleyway circuit braker panel. no new circuits repull only
Valuation:
N/A
Permit #:
E202404243945
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Apartment 2. remove ceramic fuse/fuse block. use existing panel as junction box. pull curcuits to alleyway circuit braker panel. no new circuits repull only
Valuation:
N/A
Permit #:
E202404243944
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Apartment 1. remove ceramic fuse/fuse block. use existing panel as junction box. pull curcuits to alleyway circuit braker panel. no new circuits repull only
Valuation:
N/A
Permit #:
E202404243943
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Garage level g1, g2, g3: inspection for conduit & wire installing only to fire alarm devices : flow switches tamper switch & backflow. low voltage signal wiring hook-up and tie-in pafa (other)
Valuation:
N/A
Permit #:
E202203289245
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove/replace (e) fpe federal pacific electrical panels in 21 apts 1 house panel install seimans brand load centers 400 amp 3-#6 awg 40 amp main to sub 5-10 circuits #8 awg #12 aldg #14 aldg
Valuation:
N/A
Permit #:
E202309119265
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Apartment 6. remove ceramic fuse/fuse block. fuses in closet & relocate install new 8 ckts circuit breaker panels. use (e) ckts relocation only
Valuation:
N/A
Permit #:
E202404243948
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Apartment 5. remove ceramic fuse/fuse block. fuses in closet & relocate install new 8 ckts circuit breaker panels. use (e) ckts relocation only
Valuation:
N/A
Permit #:
E202404243947
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove (1)(e) fpe (federal pacific subpanels) install (1)8-16 seimans load center 125 amp 3-5 circuits #8 awg feeders #8 awg #12 awg #14 awg
Valuation:
N/A
Permit #:
E202309119271
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove (1)(e) fpe (federal pacific subpanels) install (1)8-16 seimans load center 125 amp 3-5 circuits #8 awg feeders #8 awg #12 awg #14 awg
Valuation:
N/A
Permit #:
E202309119270
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove (1)(e) fpe (federal pacific subpanels) install (1)8-16 seimans load center 125 amp 3-5 circuits #8 awg feeders #8 awg #12 awg #14 awg
Valuation:
N/A
Permit #:
E202309119269
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove (1)(e) fpe (federal pacific subpanels) install (1)8-16 seimans load center 125 amp 3-5 circuits #8 awg feeders #8 awg #12 awg #14 awg
Valuation:
N/A
Permit #:
E202309119266
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Inspect ckt breaker panel damaged by tenant in 305.complaint inspection. to comply with complaint 202184280
Valuation:
N/A
Permit #:
E202201117767
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 2 ground rods bond connectors and jump gas pipe bonding for 600amp gt of 8 meters
Valuation:
N/A
Permit #:
E202408136195
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit #5: provide 3 circuits for kitchen. 1 - convenience outlet. 2 - counter circuits. range & fan
Valuation:
N/A
Permit #:
E202203319334
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit 2 - provide 3 circuits for kitchen; 1 convenience outlet; 2 counter circuit/range outlet/fan
Valuation:
N/A
Permit #:
E202204119529
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace existing federal pacific 100 amp panel with new 100 amp 12-23 panel
Valuation:
N/A
Permit #:
E202212023865
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit # 304: relocated existing subpanel in closet with new 8-16 sub panel to outside wall
Valuation:
N/A
Permit #:
E202309229727
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
License # 1038922
Discovery Bay, CA
143
BZ Score
$3.2K
Avg Project
-
Projects
License # 861751
Piedmont, CA
140
BZ Score
$12.3K
Avg Project
-
Projects
143
BZ Score
$22.5K
Avg Project
-
Projects
Chester Woo Reviews
BuildZoom hasn't received any reviews for Chester Woo. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you an electrician in your area today
We'll search our vast network of Electricians and connect
you with one that meets your needs today.
Verified License
BuildZoom confirmed this contractor's license
Chester Woo License info
Verified License
| License # | 255051 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Corporation, Partnership, Sole Ownership |
- BuildZoom verified this license was active as of August 2026.
Verify this license's status for Chester Woo at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 806991 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Corporation, Partnership, Sole Ownership |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Chester Woo at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 275823 |
| Status | Inactive |
| State | California |
| Type | Electrical |
| Business Type | Corporation, Partnership, 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 Chester Woo at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 770008 |
| Status | Inactive |
| State | California |
| Type | Electrical |
| Business Type | Corporation, Partnership, 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 Chester Woo at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Zenith Insurance Company |
177
Permits
- Building permit records show that Chester Woo has worked on 177 permitted projects.
Chester Woo Employees
AW
Aaron Keith Woo
Qualify Partner
CW
Chester Woo
Rmo / Ceo / Pres
CW
Chester Woo
General Partner
CW
Chester Woo, Aaron Keith Woo, Timothy Chester Woo
Owner
TW
Timothy Chester Woo
General Partner