Updated: Apr 11, 2026
Location and Projects
Address
543 Millbury Ave, La Puente, CA, 91746
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ET Systems Construction
ET Systems, 543 Millbury Ave, La Puente, CA (Owned by: Ralph Michael Apodaca) holds a General Building license according to the California license board.
Their BuildZoom score of 97 ranks in the top 18% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring ET Systems, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
ET Systems Services
Start a project today:
Custom Home Build
New Home Construction
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Roofing
Hardwood Flooring
Carpets
Laminate Flooring
Other Flooring
Framing
Wood Fences
Backsplash and Countertops
Stonework
Tile Flooring
Other Stone and Tile
Drywall
Interior Plaster
Brick and Blockwork
Other Masonry
Flatwork Concrete
Foundations
Other Concrete
Demolition
Paving, Driveways, and Side...
Excavation and Grading
Other Site Work
ET Systems Contact Information
Phone Number: (626) 290-8242
Address: 543 Millbury Ave, La Puente, CA 91746
This is a sample of this contractor's permits. Click here to access their complete permit history.
Change of use from medical office to bakery
Valuation:
N/A
Permit #:
19041-90000-35456
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Change of use from medical office to bakery
Valuation:
N/A
Permit #:
19044-90000-11013
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Change of use from medical office to bakery
Valuation:
N/A
Permit #:
19042-90000-21953
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Contract programming service
Valuation:
$0
Permit #:
BUS1998-054381
Status:
Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
ET Systems License info
Verified License
| License # | 699131 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for ET Systems at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
ET Systems Employees
RA
Ralph Michael Apodaca
Owner
ET Systems did a beautiful job on our kitchen, bathrooms n garage. Fixed electrical too. House looks n works better. Ralph Apodaca I know from other references has been doing this for yrs. Yrs later he responds n updates.