Updated: May 29, 2026
Location and Projects
Address
9690 TELSTAR AVE STE 205, El Monte, CA, 91731
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M T Crest Low Voltage Contractor
M T Crest Inc, 9690 Telstar Ave, El Monte, CA (Employees: Tetsuya Yamasaki and Tetsuya Yamasaki) holds a Low Voltage Systems license according to the California license board.
Their BuildZoom score of 102 ranks in the top 11% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring M T Crest Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
M T Crest Inc Services
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M T Crest Inc Contact Information
Phone Number: (626) 443-1221
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Address: 9690 TELSTAR AVE STE 205, El Monte, CA 91731
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Cabling for 15 data drops 16 ip camera drops and 4 speaker drops
Valuation:
N/A
Permit #:
24041-90000-56708
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Low voltage cabling for 7 speakers and 19 data cabling
Valuation:
N/A
Permit #:
24041-90000-52887
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental permit to 20041-90000-25377 for change of address from 14006 w riverside dr to 14006 w riverside dr #24
Valuation:
N/A
Permit #:
20041-10001-25377
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Low voltage cabling - 9 data drops and 9 camera cables
Valuation:
N/A
Permit #:
24041-90000-48550
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Electrical
120 S Robertson Blvd, Los Angeles, CA, 90048
2023-09-11
Low voltage cable installation 9 ip camera 6 data and 11 speaker cable
Valuation:
N/A
Permit #:
23041-90000-36209
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Low voltage 13 camera 5 speaker 11 data cables
Valuation:
N/A
Permit #:
24041-90000-35331
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Low voltage cable run
Valuation:
N/A
Permit #:
22041-90000-63527
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Low voltage cabling
Valuation:
N/A
Permit #:
22041-90000-47124
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Installing low voltage lighting for dinning and kitchen area
Valuation:
N/A
Permit #:
BE2019697
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
78 low voltage cable drops
Valuation:
N/A
Permit #:
20041-90000-25377
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
9 data cables
Valuation:
N/A
Permit #:
21041-90000-08613
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Installing low voltage cabling. (32)
Valuation:
N/A
Permit #:
BE2000148
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
19 data drops 18 voice drops
Valuation:
N/A
Permit #:
19041-90000-44432
Status:
expired
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
17 voice 25 data cabling
Valuation:
N/A
Permit #:
19041-90000-09577
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
10 data and 9 voice cabling
Valuation:
N/A
Permit #:
19041-90000-28120
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
12 surveillance cameras installation 4 data and voice cable installation 4 speakers installation
Valuation:
N/A
Permit #:
16041-90000-32564
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Run cables for tv coax data&voice and security camera. 19 apartment rooms
Valuation:
N/A
Permit #:
16041-90000-15597
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Install low voltage cable. 10 voice 8 data 6 camera 4 speaker
Valuation:
N/A
Permit #:
17041-90000-16308
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Run 24 data cables 26 camera cables total low voltage 50 drops
Valuation:
N/A
Permit #:
21141-90000-19166
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
7 data 1 voice 9 speaker cable run
Valuation:
N/A
Permit #:
22041-90000-10005
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
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M T Crest Inc Reviews
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Verified License
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M T Crest Inc License info
Verified License
| License # | 857316 |
| Status | Active |
| State | California |
| Type | Low Voltage Systems |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for M T Crest Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Sompo America Insurance Company |
81
Permits
- Building permit records show that M T Crest Inc has worked on 81 permitted projects.
M T Crest Inc Employees
TY
Tetsuya Yamasaki
Sole Owner
TY
Tetsuya Yamasaki
Rmo / Ceo / Pres