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Updated: May 16, 2026
Location and Projects
Address
P O BOX 3153, South El Monte, CA, 91733
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Triangle Services Engineer
Triangle Services, S El, Po Box 3153, South El Monte, CA (Owned by: Julie Dora Grigorian, George Grigorian) holds a General Engineering license according to the California license board.
Their BuildZoom score of 103 ranks in the top 10% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Triangle Services, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Triangle Services Services
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Triangle Services Contact Information
Phone Number: (626) 201-4840
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Address: P O BOX 3153, South El Monte, CA 91733
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Triangle Services South El Monte
Quality
103
90th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Triangle Services has a BuildZoom score of 103, which places them above 90% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
3 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Triangle Services has worked on at least
7.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$5k-$20k |
|
1 project
|
$100k-$250k |
|
1 project
|
$250k-$500k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Non-residential building alteration-repair
2024-06-20
Permit to complete work started on b19-0487/b22-0791 retaining wall at rear of property. installation of 34 units soldier piles - 182 long
Valuation:
$455,882
Permit #:
B24-0895
Status:
issued
Fee:
$2,207
Permit Type:
N/A
Building Type:
N/A
Demolish house/garage in prep for sf new & adu. refund demolish bond to triangle
Valuation:
N/A
Permit #:
Demo-22-0202
Status:
issued
Fee:
$5,214
Permit Type:
N/A
Building Type:
N/A
(b) permit to demolish (1) 2, 861 sf house and (1) 5, 000 sf - warehouse. cap off all utilities and abandon septic tank
Valuation:
N/A
Permit #:
BLD22-005385
Status:
expired
Fee:
$505
Permit Type:
S-fam residential
Building Type:
N/A
(b) (bld22-005385) plan check for demolition of house - & metal building
Valuation:
N/A
Permit #:
BPC22-001839
Status:
final
Fee:
$290
Permit Type:
S-fam residential
Building Type:
N/A
Precise grading & drainage plans 2.0 acres into 6 lots located at 6929 hellman avenue
Valuation:
N/A
Permit #:
PGR2021-00047
Status:
issued
Fee:
$12,082
Permit Type:
N/A
Building Type:
N/A
Demolition of existing building
Valuation:
N/A
Permit #:
COM-DEM-22-007
Status:
complete
Fee:
$89
Permit Type:
N/A
Building Type:
N/A
Rough grade of 2.0 acres into 6 lots located at 6929 hellman avenue
Valuation:
N/A
Permit #:
PGR2021-00043
Status:
final
Fee:
$8,996
Permit Type:
N/A
Building Type:
N/A
Demolish single family dwelling 808 sq. ft. with sewer cap
Valuation:
$5,000
Permit #:
B13-1178
Status:
final
Fee:
$292
Permit Type:
N/A
Building Type:
N/A
Grading for new single family dwelling cut 227 cy fill 543 cy over excavation 500 cy
Valuation:
N/A
Permit #:
1803010001
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish the (e) fire damaged bank building.: 6 foot chain link fencing all ready in place securing job site no canopy sewr cap required comply with department order effective date 02/21/2023. permit will expire 30 days from issuance date
Valuation:
$18,000
Permit #:
23019-20000-01274
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Demolish house/garage in prep for
Valuation:
N/A
Permit #:
B00-057-259
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish demolish house & attach. garage in prep for sfr/new refund bond to: julie grigorian p.o. box 3153 s el monte 91733 626-201-4840 refund requested 4/11/14 cm
Valuation:
N/A
Permit #:
B00-046-018
Status:
final
Fee:
$2,065
Permit Type:
Dwellings
Building Type:
N/A
Site grading for proposed single family residence. cut = 520 cu. yds. fill = 0 export = 540 cu. yds. (bbsc approved total cumulative export of 1 100 c.y from 3207 & 3211 kenneth dr on 12/2/03 - bf#030193). see appl# 03030-10000-01443 for other grading permit
Valuation:
N/A
Permit #:
03030-10000-01443
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Hillside grading permit for backfill of swimming pool with structural fill pool shell to be removed. total of 50 cu. yd. comply with department order effective date 03/13/2009. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
11030-10000-01794
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Demolish (e) 1653 sf house and attached garage for construction of new single family dwelling
Valuation:
N/A
Permit #:
1709050049
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish existing house and 2-car attached garage in preparation for sf/new residence. refund demolish bond to: tze hsing chen @ 767 trotter ct walnut ca 91789 - refund requested 3-21-2012
Valuation:
N/A
Permit #:
B00-039-182
Status:
final
Fee:
$2,103
Permit Type:
N/A
Building Type:
N/A
Demolish (e) 1653 sf house and attached garage for construction of new single family dwelling
Valuation:
N/A
Permit #:
1709050049
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Permit to reinstate permit 15-1105: demolish house and remove septic tank
Valuation:
$1,050
Permit #:
16-2409
Status:
final
Fee:
$116
Permit Type:
N/A
Building Type:
N/A
Install free standing fence 8'high max x 2520'long
Valuation:
$30,000
Permit #:
1704130016
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Site grading for proposed single family residence. cut = 520 cu. yds fill = 0 export = 540 cu. yds. (bbsc approved total cumulative export of 1 100 c.y from 3207 & 3211 kenneth dr on 12/2/03 - bf#030193)
Valuation:
N/A
Permit #:
03030-10000-01444
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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BZ Score
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Avg Project
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Avg Project
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BZ Score
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Avg Project
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Projects
Triangle Services Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Triangle Services License info
Verified License
| License # | 830943 |
| Status | Active |
| State | California |
| Type | General Engineering |
| Business Type | Partnership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Triangle Services at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
103
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Travelers Property Casualty Company Of America |
60
Permits
- Building permit records show that Triangle Services has worked on 60 permitted projects.
Triangle Services Employees
GG
George Grigorian
General Partner
JG
Julie Dora Grigorian
Qualify Partner
JG
Julie Dora Grigorian, George Grigorian
Owner