Updated: Sep 01, 2025
Location and Projects
Address
505 W 2nd St, Antioch, CA, 94509
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GKJ Engineering Architect
Their BuildZoom score of 94 ranks in the top 24% of 336,931 California licensed contractors.
If you are thinking of hiring GKJ Engineering, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
GKJ Engineering Services
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Architectural Drawings and ...
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Addition Design
ADU Design
Basement Design
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Custom Home Design
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Hotel Design
Industrial Building Design
Kitchen Design
Modular Home Design
Multi-Family Building Design
Office Building Design
Office Space Designer
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GKJ Engineering Contact Information
Phone Number: (510) 393-3495
Address: 505 W 2nd St, Antioch, CA 94509
This is a sample of this contractor's permits. Click here to access their complete permit history.
100% affordable housing project. addition of 5th story to existing 4 story building; 1950 post street (building b). construction of new elevator for 5 floors (13 new units). application 202110140447 and 202109098099 plans shared. two applications on set of plans
Valuation:
$5,756,564
Permit #:
202109098099
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
100% affordable housing project. addition of 5th story to existing 4 story building; 2045 sutter street (building a) construction of new elevator for 5 floors (16 new units). application 202110140447 and 202109098099 plans shared. two applications on set of plans
Valuation:
$8,682,687
Permit #:
202110140447
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
1 story addition to the existing 2- story dwelling.(450 sq. ft.)
Valuation:
$0
Permit #:
98014-30000-06172
Status:
Permit Closed
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
(1) dwelling - si...
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GKJ Engineering License info
License Not Verified
| License # | C15457 |
| Status | Active |
| State | California |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of September, 2025. Check the current license status of GKJ Engineering with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
GKJ Engineering Employees
JJ
Joseph Oakley Jr
Owner