Updated: Dec 13, 2025
Location and Projects
Address
1545 Rubio Dr, San Marino, CA, 91108
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Tsai, Willy Y Construction
Serving San Marino, California, Willy Y. Tsai has been active in the construction industry for 37 years. He manages projects in residential construction throughout the San Gabriel Valley. With extensive experience in both remodels and new builds, Tsai works on single-family home renovations as well as ground-up construction. His portfolio includes kitchen and bathroom remodels, room additions, and upgrades to existing homes to enhance both function and value. Tsai collaborates closely with homeowners, guiding them through the permitting process and helping select suitable materials and finishes for each project. With decades of experience supporting property owners in San Marino and surrounding communities, Tsai is familiar with local building codes and neighborhood zoning requirements. He offers solutions tailored to the specific needs of each property and project type.
Tsai, Willy Y Services
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Tsai, Willy Y Contact Information
Phone Number: (626) 281-5726
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Address: 1545 Rubio Dr, San Marino, CA 91108
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Tsai, Willy Y San Marino
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Tsai, Willy Y has a BuildZoom score of 106, which places them above 93% of 336,931 contractors in California.
Activity
|
21 projects
|
2025 |
|
8 projects
|
2024 |
|
19 projects
|
2023 |
Our building permit records indicate that Tsai, Willy Y has worked on at least
48.0 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.
Experience
|
16 projects
|
Home Additions |
|
6 projects
|
New Constructions |
|
9 projects
|
Multi-room remodels |
|
6 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Tsai, Willy Y mostly works on
home addition
and multi-room remodel
projects.
Pricing
|
6 projects
|
< $5k |
|
6 projects
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
4 projects
|
$50k-$100k |
|
9 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
2 projects
|
$500k-$1mil |
|
1 project
|
$1mil+ |
The typical size of their permits is approximately $30,000. This graph shows the distribution of these job values.
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.
Eplan: interior remodel of north side of single family residence. convert existing bedroom into 2 offices redesign existing closet and bedroom into new master suite and remodel existing bathroom. replace other windows per plan. replace all roofing
Valuation:
$150,000
Permit #:
25016-10000-05685
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to # 22014-30000-00560 to remove portion of new roof framing from scope of work and keep the existing roof remove ceiling joists to have vaulted ceiling and addition a window
Valuation:
$5,000
Permit #:
22014-30002-00560
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Scope of work is a facade remodel on a four story 152 464 sf industrial/manufacturing building. features include new smooth stucco finish and metal panels over existing surface. new aluminum fins and eyebrows over existing south facing large windows. horizontal louvres over existing entrance to accentuate it. sunshade awnings over existing storefront entrances all work per engineering
Valuation:
$150,000
Permit #:
22016-20000-05168
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental permit to #24016 - 10000 - 04136) to addition non-load bearing partition wall in existing rec. room in basement. convert 145 sq.ft. of existing storage in basement into laundry room. updated structural steel staircase
Valuation:
$70,000
Permit #:
24016-10000-26982
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
3 886 sf new two-story single family residence 500 sf new garage 550 sf new pool new retaining wall 6ft from the bottom of the footing to the top wall and 1 long investigation fee applied
Valuation:
$753,497
Permit #:
B22-1486
Status:
expired
Fee:
$56,832
Permit Type:
N/A
Building Type:
N/A
Reduce (e) roof eave length from 36 to 10 eliminate (e) overhang supports (post & beams). remove (e) floor tiles and dry rot wood floor joist and supporting beams. provide new flooring subfllor & waterproofing. keep open ceiling at the bottom of the deck. provide new 6x8 beam below (connect with floor joist) to support new 42 high guardrail. guardrail to have supports at 48 o.c
Valuation:
$20,000
Permit #:
B202506609
Status:
issued
Fee:
$605
Permit Type:
N/A
Building Type:
N/A
Eplan interior and exterior repair of portion of 2nd floor of 2-story single family dwelling including: repair of approximately 80 sqft of the roof and 464 sqft second floor bathrooms insulate bathrooms replace bathroom windows at same size and location replace plumbing fixtures structural repairs per engineer design
Valuation:
$15,000
Permit #:
23016-20000-12127
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior remodel to ex. single family dwelling. new staircase to connect basement and first floor. new bathroom at basement floor. no change to existing square footage
Valuation:
$70,000
Permit #:
24016-10000-04136
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 21014-20000-00416 to revise floorplans and struct plans all work per enginnering no change in height footprint
Valuation:
$501
Permit #:
21014-20002-00416
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition 5'0 x 29'10 and 9'0 x 13'1 to expand kitchen kitchen bedrooms and bathroom. remodel dining room and laundry room. all work per engineering
Valuation:
$135,000
Permit #:
18014-10000-01379
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
**no fee dept error** supplemental permit to 23016-10000-06675 to correct use code and address and work description. work description to read remodel kitchen/nook/bedroom areas in 372 1/4 e 55th st. all work is interior. all work per engineered design **no fee dept error**
Valuation:
N/A
Permit #:
23016-10001-06675
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Alteration and remodel 29 units from (e) 67-light-housekeeping rooms. addition new kitchenettes and bathrooms. create a storage area on the 2nd floor. create lobby waiting area on the 1st floor
Valuation:
$250,000
Permit #:
20016-10000-20285
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
*plan check only* supplemental permit to 20014-20000-05067 to revise work description to new 26'-9 x 30'-9 irregular shaped 2-story accecssory dwelling unit per lamc 12.22 a.33(c) and (d) w rooftop deck. all work per engineering
Valuation:
$20,000
Permit #:
20014-20002-05067
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
2-story addition to (e) 2-story accessory structure with servant quarter (1, 569 sf) over garage (776 sf) convert portion of the 2nd floor to a rec-room (400 sf) convert portion of 1st floor to an adu (941 sf) per lamc 12.22 a.33(c) and (d)
Valuation:
N/A
Permit #:
22014-30000-00560
Status:
applied
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remove ex. 16'x 10 detached garage except for 4 x 6 slab to remain and construct 24'11 x 20'0 accessory dwelling unit per ab 494 and sb 229. all work per engineering
Valuation:
$50,000
Permit #:
18010-10000-01152
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert 20 x 26 (e) detached garage and addition 14 x 16 to create a (n) accessory dwelling unit per lamc 12.22 a.33(c) and (d). all work per engineering. comply with department order effective date 07/16/2020. permit will expire 30 days from issuance date
Valuation:
$100,000
Permit #:
20014-20000-05067
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(eplan) addition of carport to existing auto shop. work per engineer details
Valuation:
$13,000
Permit #:
25014-10000-01095
Status:
applied
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Remodel 4 apartment units: kitchen and bathrroom in units 8 & 22. replace all doors and windows (same location/size dual glazing and certified by nfrc and remove kitchen/living room separation wall in units 7 8 21 & 22 per engineering
Valuation:
$50,000
Permit #:
20016-10000-33058
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Change of use from retail to retail bakery. no change in parking. (e) building permit under # 08016-10000-19785
Valuation:
$170,000
Permit #:
14016-10000-10681
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replace framing and window at each of two areas in existing 2 story single family dewlling per engineer deisgn comply with department order effective date 12/15/2017. permit will expire 30 days from issuance date. ceis case number is 797497
Valuation:
$17,500
Permit #:
20016-10000-32936
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Tsai, Willy Y License info
Verified License
| License # | CAC35589 |
| Status | Active |
| State | California |
- BuildZoom has not verified this license since June, 2015.
Verify this license's status for Tsai, Willy Y at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
560
Permits
- Building permit records show that Tsai, Willy Y has worked on 560 permitted projects.