Updated: Dec 29, 2025
Location and Projects
Address
2631 PIEDMONT AVE, Rossmoor, CA, 90720
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Alfa Builder Construction
Alfa Builder, Inc, 2631 Piedmont Ave, Rossmoor, CA (Employees: Linda Alonso, Linda Alonso, and Rosalio Alonso) holds a General Building license according to the California license board.
Their BuildZoom score of 95 ranks in the top 22% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Alfa Builder, Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Alfa Builder, Inc Services
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Alfa Builder, Inc Contact Information
Phone Number: (562) 430-4450
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Address: 2631 PIEDMONT AVE, Rossmoor, CA 90720
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Alfa Builder, Inc Rossmoor
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Alfa Builder, Inc has a BuildZoom score of 95, which places them above 78% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
Our building permit records indicate that Alfa Builder, Inc has worked on at least
1.0 project 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-$20k |
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.
R3/u1: 1st floor: addition (223 sq ft) to enlarge/remodel kitchen and create new laundry room. remove bearing wall at living room and kitchen. change out fau in closet and install new tankless water heater. >>mhe19-00041<<
Valuation:
$45,000
Permit #:
BLD19-01578
Status:
complete
Fee:
$3,150
Permit Type:
N/A
Building Type:
N/A
Interior alteration to (e) single family dwelling with attached garage. scope of work to include kitchen remodel and replace walls with beams. all work per engineered design
Valuation:
$30,000
Permit #:
19016-40000-18688
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
R3/u1: construct retaining wall at the rear of the property (100 l x 7 hi max (5 h max exposed)) with 60 l x 3.6 h guardrail >>mhe19-00041<<
Valuation:
N/A
Permit #:
BLD20-00281
Status:
triage
Fee:
$261
Permit Type:
N/A
Building Type:
N/A
Rmdl entry with addition shear wall rmdl bd room to create new closet c o window change out 2 exterior sliding doors living room with 2 windows above c o s g l den
Valuation:
N/A
Permit #:
MEC12-00791
Status:
complete
Fee:
$38
Permit Type:
N/A
Building Type:
N/A
Rmdl entry with addition shear wall rmdl bd room to create new closet c o window change out 2 exterior sliding doors living room with 2 windows above c o s g l den
Valuation:
N/A
Permit #:
ELE12-01336
Status:
complete
Fee:
$42
Permit Type:
N/A
Building Type:
N/A
Rmdl entry with addition shear wall rmdl bd room to create new closet c o window change out 2 exterior sliding doors living room with 2 windows above c o s g l den
Valuation:
$20,000
Permit #:
BLD12-02055
Status:
complete
Fee:
$1,528
Permit Type:
N/A
Building Type:
N/A
R3 u extend balcony 61 sf changeout window to s g d same size same location there shall be no reduction of opening area in egress windows mis13 00212
Valuation:
$766
Permit #:
BLD13-01473
Status:
complete
Fee:
$154
Permit Type:
N/A
Building Type:
N/A
Upgrade (e) trash enclosure: 38.4 sqft rain proof (corrugated steel) wire mesh 28 in. in height over (e) block wall. lockable gate
Valuation:
$2,000
Permit #:
1801040041
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
403 ft. 6 in. lf of wrought iron fence 7 ft 6 in. in height. previoulsy built without benefit of permit
Valuation:
$15,000
Permit #:
1801040042
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 10 outlets 5 switches and 4 light sockets
Valuation:
N/A
Permit #:
17041-40000-41469
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Enclose (e) patio/porch at garage area; addition 99sqft to garage
Valuation:
N/A
Permit #:
50018-1019
Status:
final
Fee:
N/A
Permit Type:
Addition
Building Type:
N/A
R3/u1: 1st floor: addition (223 sq ft) to enlarge/remodel kitchen and create new laundry room. remove bearing wall at living room and kitchen. change out fau in closet and install new tankless water heater. >>mhe19-00041<<
Valuation:
$45,000
Permit #:
PLM20-00031
Status:
complete
Fee:
$44
Permit Type:
N/A
Building Type:
N/A
R3/u1: 1st floor: addition (223 sq ft) to enlarge/remodel kitchen and create new laundry room. remove bearing wall at living room and kitchen. change out fau in closet and install new tankless water heater. >>mhe19-00041<<
Valuation:
$45,000
Permit #:
MEC20-00027
Status:
complete
Fee:
$44
Permit Type:
N/A
Building Type:
N/A
R3/u1: 1st floor: addition (223 sq ft) to enlarge/remodel kitchen and create new laundry room. remove bearing wall at living room and kitchen. change out fau in closet and install new tankless water heater. >>mhe19-00041<<
Valuation:
$45,000
Permit #:
ELE20-00035
Status:
complete
Fee:
$44
Permit Type:
N/A
Building Type:
N/A
Addition to rear - laundry room extend kitchen and bedroom remodel two bedrooms and kitchen addition new walk-in closet open covered wood patio
Valuation:
$32,500
Permit #:
1903140003
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
260 sqft ground floor addition to existing 2-story dwelling. converting master bathroom and bedroom to extend family room and create office. relocate stairway convert bathroom and bedroom to master bathroom master bedroom and closet. results in 3 bedrooms and 2 full baths after addition
Valuation:
N/A
Permit #:
07014-20000-08486
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Residential remodel: convert 112 sq. ft. existing deck to family rooms for unit(s) c and d
Valuation:
$5,000
Permit #:
BLD2015-06921
Status:
final
Fee:
N/A
Permit Type:
Residential remodel
Building Type:
N/A
Installing ceiling joist to existing garage (2'x10 c-j o 16
Valuation:
N/A
Permit #:
50016-1289
Status:
final
Fee:
N/A
Permit Type:
Alter
Building Type:
N/A
R3/u1: construct retaining wall at the rear of the property (100 l x 7 hi max (5 h max exposed)) w (60 l x 42 hi) guardrail @ south side of property not shared >>mhe19-00041<<
Valuation:
N/A
Permit #:
BLD20-02307
Status:
issued
Fee:
$1,480
Permit Type:
N/A
Building Type:
N/A
Remodel bathrooms (2) & kitchen: re-drywall insulation; replace showers bathtubs lavs water closets - no structural changes***12/20/2005 upgrade sub-panel & rewire entire unit & replace ducts**12/23/2005 addition gas line for bbq & gas line for outdoor heater*** entered by: ortegar
Valuation:
N/A
Permit #:
C2005-006694
Status:
final
Fee:
$691
Permit Type:
N/A
Building Type:
N/A
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Alfa Builder, Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Alfa Builder, Inc License info
Verified License
| License # | 817204 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Alfa Builder, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
32
Permits
- Building permit records show that Alfa Builder, Inc has worked on 32 permitted projects.
Alfa Builder, Inc Employees
LA
Linda Alonso
Officer
LA
Linda Alonso
Officer
RA
Rosalio Alonso
Rmo / Ceo / Pres
RA
Rosalio Alonso
Rmo/Ceo/Pres