Location and Projects
Address
1514 DESCANSO DRIVE, La Canada, CA, 91011
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Tis, Inc. Engineer
Tis, Inc., 1514 Descanso Dr, La Canada, CA (Employees: Jungsun Amy Yun, Nathanael Yun, and Nathanael Yun) holds a General Engineering, General Building license according to the California license board.
Their BuildZoom score of 89 does not rank in the top 50% of California contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Tis, Inc., we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Tis, Inc. Contact Information
Phone Number: (661) 877-1771
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Address: 1514 DESCANSO DRIVE, La Canada, CA 91011
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Tis, Inc. La Canada
Quality
89
30th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Tis, Inc. has a BuildZoom score of 89, which places them above 30% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
1 project
|
2024 |
|
5 projects
|
2023 |
Our building permit records indicate that Tis, Inc. 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 |
|
1 project
|
$100k-$250k |
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.
2 kitchen/2 bathroom remodel for residential buildings (no structural changes). combined with electrical plumbing. (4)window and (2)door change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 150.2... see more
Valuation:
$40,000
Permit #:
22016-10000-13597
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition for detached accessory dwelling uni to (e) garage per state law gcs 65852.2 (e) (1) (rd) with full complaince for methane comply with department order effective date 02/08/2020. permit will expire 30 days from issuance date. all permits shall be for the same time period limitation. ceis case number is 890845
Valuation:
$103,000
Permit #:
20014-10000-01147
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
( 10 ) door change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24. (single inspection)
Valuation:
$80,000
Permit #:
21016-30000-09144
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
3 door change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 150(b) 1b of title 24
Valuation:
$25,000
Permit #:
21016-10000-06385
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Exterior & interir t. i. to (e) two (2) story retail building involved in interior stairways and elevator area remodeling and opening of a few rear wall windows & remove (e) store front & install new store front & canopy. (no change of use)
Valuation:
$300,000
Permit #:
14016-10000-22012
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
(n) addition to (e) garage and convert to accessory dwelling unit per lamc 12.22.a.33 (c)-(d)
Valuation:
$125,000
Permit #:
20014-10000-05638
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Repair existing hvac unit & duct system comply with department order effective date 03/12/2019. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
22044-10000-09579
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
**no fee department error** supplemental to permit 20014-10000-01147 to correct legal description for the issuance of the certificate of occupancy
Valuation:
N/A
Permit #:
20014-10001-01147
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 20014-10000-00688 to revise work description to read: addition of 33'7 x 25'2 2-storey adu per ordinance in lieu of new adu. *** no fee department error****
Valuation:
N/A
Permit #:
20014-10001-00688
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(n) detached accessory dwelling unit per lamc 12.22
Valuation:
$120,000
Permit #:
20010-10000-02625
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Garage door change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
$2,000
Permit #:
17016-10000-16399
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Garage door change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
$2,000
Permit #:
17016-10000-16399
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit 15016-20000-17349 to transfer permit from owner builder to contractor contractor license # 865091 tis inc. and change ownership; julia choo and sabina young lee
Valuation:
N/A
Permit #:
15016-10002-17349
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental to permti 20010-10000-02625 to capture methane mititgation plan. no plot plan
Valuation:
$501
Permit #:
20010-10001-02625
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 33'7 x 25'2 2-story detached adu per ordinance
Valuation:
$80,000
Permit #:
20014-10000-00688
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 2-story single story family dwelling with basement & attached garage
Valuation:
$325,000
Permit #:
16010-10000-05458
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Kitchen/bathroom remodel
Valuation:
N/A
Permit #:
22041-90000-47660
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Replacing plumbing fixtures
Valuation:
N/A
Permit #:
22042-90000-20038
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New powder room @ 1st floor and converting master closet to master bathroom room @ 2nd floor. no exterior work
Valuation:
$10,000
Permit #:
20016-10000-18123
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Proposed new 2-car garage ***"comply with department order effective date 01/18/2013. permit will expire 30 days from issuance date
Valuation:
$35,000
Permit #:
18010-10000-01930
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Tis, Inc. License info
Verified License
| License # | 865091 |
| Status | Active |
| State | California |
| Type | General Engineering, General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Tis, Inc. at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
89
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
53
Permits
- Building permit records show that Tis, Inc. has worked on 53 permitted projects.
Tis, Inc. Employees
JY
Jungsun Amy Yun
Officer
NY
Nathanael Yun
Rmo / Ceo / Pres
NY
Nathanael Yun
Rmo / Ceo / Pres
Had a very unpleasant experience with this company. A multitude of issues were noted including poor control of subcontractors, untimely responses to construction concerns, unapproved (not even discussed) deviations from blueprints and extended project times due to his (Mr. Yun) disputes with his subcontractors. However what was really astonishing is the blatant disregard for safety in installation of electrical per multiple subsequent assessments. No junction boxes used with live wires lying on top of drywall! Also damages to residence (destruction of window and window frame, dryer air duct) were not acknowledged until we brought to his attention. Needless to say the entire experience made us wary of future project endeavors. His control (or lack their of) of the project and unprofessionalism have warranted further investigation and redo work done.