Updated: Apr 20, 2026
Location and Projects
Address
819 Streamview St, Walnut, CA, 91789
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Tsai Masterbuilders Construction
Tsai Masterbuilders, 819 Streamview St, Walnut, CA (Owned by: Yuh-Yow Eddy Tsai) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 96 ranks in the top 20% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Tsai Masterbuilders, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Tsai Masterbuilders Services
Start a project today:
Custom Home Build
New Home Construction
Medium Multi-Family New Con...
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Medium Multi-Family Remodel...
Other Residential Remodel
Office Renovation
Restaurant Renovation
Retail Renovation
Other Commercial Renovation
Hardwood Flooring
Carpets
Laminate Flooring
Other Flooring
Framing
Wood Fences
Drywall
Interior Plaster
Flatwork Concrete
Foundations
Other Concrete
Garage Construction
Gutters and Flashing
Drafting
Pole Barn
Restaurant New Construction
Retail New Construction
Office Building New Constru...
Industrial New Construction
Hotel New Construction
Warehouse New Construction
Tsai Masterbuilders Contact Information
Phone Number: (909) 319-9383
Address: 819 Streamview St, Walnut, CA 91789
This is a sample of this contractor's permits. Click here to access their complete permit history.
Supplemental to permit 16010-10000-06429 to change from owner-builder to contractor
Valuation:
N/A
Permit #:
16010-30001-06429
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental to permit 16010-10000-06429 to change from owner-builder to contractor
Valuation:
N/A
Permit #:
16010-30001-06429
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 20041-90000-18830 to changefrom owner to contractor
Valuation:
N/A
Permit #:
20041-30001-18830
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 20041-90000-18830 to changefrom owner to contractor
Valuation:
N/A
Permit #:
20041-30001-18830
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New 100 amp temporary power pole
Valuation:
N/A
Permit #:
B21-000-005
Status:
final
Fee:
$247
Permit Type:
N/A
Building Type:
N/A
Tear off re-roof with asphalt shingles 1187st total house only
Valuation:
N/A
Permit #:
50017-0256
Status:
final
Fee:
N/A
Permit Type:
Reroof
Building Type:
N/A
(1) automatic washer (1) bathtub (1) dishwasher (1) dispo
Valuation:
N/A
Permit #:
60017-0107
Status:
final
Fee:
N/A
Permit Type:
Residential
Building Type:
N/A
Replace (10) windows kitchen & bathroom remodel
Valuation:
N/A
Permit #:
50017-0255
Status:
final
Fee:
N/A
Permit Type:
Alter
Building Type:
N/A
(6) lights (6) outlets (1) switch
Valuation:
N/A
Permit #:
70017-0150
Status:
final
Fee:
N/A
Permit Type:
Residential
Building Type:
N/A
Garage roof structure repair
Valuation:
N/A
Permit #:
50017-0387
Status:
final
Fee:
N/A
Permit Type:
Alter
Building Type:
N/A
1-story bedroom and bathroom addition 1 bdr + 1 bathroom (total 268 sf)
Valuation:
$27,068
Permit #:
17014-10000-04500
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Room addition next to master bathroom: 190sf 90f x 10f study area & master bathroom
Valuation:
N/A
Permit #:
PMT2017-04497
Status:
final
Fee:
$1,030
Permit Type:
N/A
Building Type:
N/A
Single family dwelling 1916sqft attach garage 462sqft
Valuation:
$75,214
Permit #:
BRS041322
Status:
FINAL
Fee:
$2,141
Permit Type:
N/A
Building Type:
N/A
Single family dwelling 1560sqft attach garage 462 sq ft
Valuation:
$75,214
Permit #:
BRS041343
Status:
FINAL
Fee:
$2,372
Permit Type:
N/A
Building Type:
N/A
Single family dwelling 1560sqft attach garage 462 sq ft
Valuation:
$62,537
Permit #:
BRS041344
Status:
FINAL
Fee:
$2,717
Permit Type:
N/A
Building Type:
N/A
New dwelling garage porch
Valuation:
$75,420
Permit #:
BRS042924
Status:
FINAL
Fee:
$2,565
Permit Type:
N/A
Building Type:
N/A
New dwelling garage porch
Valuation:
$75,763
Permit #:
BRS042925
Status:
FINAL
Fee:
$2,223
Permit Type:
N/A
Building Type:
N/A
Retaining wall/stem-wall for bgr041358
Valuation:
$0
Permit #:
BXX054229
Status:
EXPIRED
Fee:
$140
Permit Type:
N/A
Building Type:
N/A
Retaining wall/stem-wall for bgr041481
Valuation:
$0
Permit #:
BXX054230
Status:
EXPIRED
Fee:
$140
Permit Type:
N/A
Building Type:
N/A
Garden wall 159x6 county standard
Valuation:
$1,908
Permit #:
BXX063400
Status:
EXPIRED
Fee:
$184
Permit Type:
N/A
Building Type:
N/A
Tsai Masterbuilders Reviews
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Verified License
BuildZoom confirmed this contractor's license
Tsai Masterbuilders License info
Verified License
| License # | 457096 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Tsai Masterbuilders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 580151 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Tsai Masterbuilders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
8
Permits
- Building permit records show that Tsai Masterbuilders has worked on 8 permitted projects.
Tsai Masterbuilders Employees
YT
Yuh-Yow Eddy Tsai
Owner