Updated: Mar 12, 2026
Location and Projects
Address
126 E GRANDVIEW AVE, Sierra Madre, CA, 91024
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Yoo Yong Architect
Their BuildZoom score of 94 ranks in the top 24% of 336,931 California licensed contractors.
If you are thinking of hiring Yoo Yong, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Yoo Yong Services
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Yoo Yong Contact Information
Phone Number: (213) 435-8450
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Address: 126 E GRANDVIEW AVE, Sierra Madre, CA 91024
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Yoo Yong Sierra Madre
Quality
94
76th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Yoo Yong has a BuildZoom score of 94, which places them above 76% of 336,931 contractors in California.
Activity
|
2 projects
|
2025 |
Our building permit records indicate that Yoo Yong has worked on at least
2.0 projects over the past year.
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 |
|
1 project
|
$5k-$20k |
|
1 project
|
$1mil+ |
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.
Site grading and remove/recompaction for new factory built modular hcd classroom/administration building under 25010-20000-01244
Valuation:
$8,883
Permit #:
25030-20000-01802
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Potable water and sewer site utilities. existing meter and backflow
Valuation:
N/A
Permit #:
25042-20000-08972
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New 40 000sf multi-story factory-built classroom/administration building
Valuation:
N/A
Permit #:
25041-10000-14839
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
A propsoed factory built modular charter school
Valuation:
$8,500,000
Permit #:
25010-20000-01244
Status:
applied
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemetnal permit to 25010-20000-01244 early start foundation permit for a factory built modular school building
Valuation:
$2,125,000
Permit #:
25010-20001-01244
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New ada accessible ramp from parking level to first floor building level
Valuation:
N/A
Permit #:
13016-10000-13198
Status:
plancheck
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Drawings to correct issues from order to comply order # 636 sol. convert (e) duplex back to single family dwelling
Valuation:
N/A
Permit #:
08016-10000-18531
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
No Description Available
Valuation:
$2,000
Permit #:
9811-008
Status:
issued
Fee:
$192
Permit Type:
Reroof
Building Type:
N/A
Eplan: demolish existing wash building
Valuation:
$4,000
Permit #:
25019-20000-04116
Status:
applied
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
+++attn: varant+++ revisions to approved plans 25042-20000-08972: underground stormwater only. +++ modular buildings++=
Valuation:
N/A
Permit #:
25042-20001-08972
Status:
triage
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
(eplan) plan check only for revision to approved set under delta 1 only. scope of work includes changes to the feeder schedule
Valuation:
N/A
Permit #:
25041-10001-14839
Status:
approved
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
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Yoo Yong Reviews
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Recent Buildzoom Projects
Yoo Yong License info
License Not Verified
| License # | C31162 |
| Status | Active |
| State | California |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of October, 2025. Check the current license status of Yoo Yong with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 981552 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
- 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 Yoo Yong at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 953318 |
| Status | Inactive |
| State | California |
| Type | General Building |
- 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 Yoo Yong at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Yoo Yong Employees
JY
Jae Yong Yoo
Sole Owner
JY
Jae Yong Yoo
Sole Owner
JY
Jaeson Jungsik Yoo
Sole Owner
YY
Yoo Yong
Owner