Updated: Feb 05, 2026
Location and Projects
Address
1434 WHITECLIFF WY, Walnut Creek, CA, 94596
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A1 Developers Construction
A1 Developers Inc, 1434 Whitecliff Way, Walnut Creek, CA (Employees: Joseph John Rezek and Norberto Rosa Andrade) holds a General Building license according to the California license board.
Their BuildZoom score of 100 ranks in the top 13% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring A1 Developers Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
A1 Developers Inc Services
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A1 Developers Inc Contact Information
Phone Number: (510) 378-8884
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Address: 1434 WHITECLIFF WY, Walnut Creek, CA 94596
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This is a sample of this contractor's permits. Click here to access their complete permit history.
698 sf adu/attached to garage
Valuation:
N/A
Permit #:
BD2401-026
Status:
issued
Fee:
$4,916
Permit Type:
New
Building Type:
N/A
Bathroom and kitchen remodel
Valuation:
N/A
Permit #:
BDR2502-002
Status:
final
Fee:
$1,119
Permit Type:
Remodel
Building Type:
N/A
Remodel 520 sf kitchen and bathrooms new roof
Valuation:
N/A
Permit #:
BD2401-027
Status:
final
Fee:
$3,400
Permit Type:
New
Building Type:
N/A
Addition gas line and electrical line for bbq & hot tub
Valuation:
$10,000
Permit #:
B2208-0193
Status:
issued
Fee:
$488
Permit Type:
Miscellaneous
Building Type:
N/A
Kitchen and 2 bathroom remodel
Valuation:
N/A
Permit #:
BDR2309-003
Status:
final
Fee:
$4,679
Permit Type:
Alter
Building Type:
N/A
Frontage improvements
Valuation:
N/A
Permit #:
EP2505-0010
Status:
issued
Fee:
N/A
Permit Type:
Pw
Building Type:
N/A
Kitchen and bathroom remodel
Valuation:
N/A
Permit #:
BDR2311-002
Status:
final
Fee:
$1,568
Permit Type:
Remodel
Building Type:
N/A
Building a barn that is 30 ft x 30 ft
Valuation:
N/A
Permit #:
BLD23-1688
Status:
withdrawn
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 762 sq ft & 32 sq ft porch w 897 sq ft remodel
Valuation:
N/A
Permit #:
B17-0288
Status:
final
Fee:
$4,953
Permit Type:
Addition/res
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
PW2407-005
Status:
plancheck
Fee:
N/A
Permit Type:
Major
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
A1 Developers Inc License info
Verified License
| License # | 1085764 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for A1 Developers Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
8
Permits
- Building permit records show that A1 Developers Inc has worked on 8 permitted projects.
A1 Developers Inc Employees
JR
Joseph John Rezek
Rmo
NA
Norberto Rosa Andrade
Ceo / President