Updated: May 10, 2026
Location and Projects
Address
15421 S WILLIAM AVE, Compton, CA, 90221
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Quality A 2 Z Home Improvement
Quality A 2 Z Home Improvement, 15421 S William Ave, Compton, CA (Employees: Roberto Ibarra Hernandez, Roberto Ibarra Hernandez, and Ronald Butler) holds a General Building license and 1 other 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 Quality A 2 Z Home Improvement, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Quality A 2 Z Home Improvement Services
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Quality A 2 Z Home Improvement Contact Information
Phone Number: (562) 719-5387
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Address: 15421 S WILLIAM AVE, Compton, CA 90221
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Building Permits by Quality A 2 Z Home Improvement
This is a sample of this contractor's permits. Click here to access their complete permit history.
R3/u1: enlarge master bathroom; remodel laundry room; remodel/reconfigure kitchen; remove wall between kitchen and living room
Valuation:
N/A
Permit #:
PLM25-00237
Status:
complete
Fee:
$170
Permit Type:
N/A
Building Type:
N/A
R3/u1: enlarge master bathroom; remodel laundry room; remodel/reconfigure kitchen; remove wall between kitchen and living room
Valuation:
N/A
Permit #:
MEC25-00210
Status:
complete
Fee:
$90
Permit Type:
N/A
Building Type:
N/A
R3/u1: enlarge master bathroom; remodel laundry room; remodel/reconfigure kitchen; remove wall between kitchen and living room
Valuation:
N/A
Permit #:
ELE25-00379
Status:
complete
Fee:
$117
Permit Type:
N/A
Building Type:
N/A
Supplemental 21042 90000 77884 to change from owner builder to contractor and to change address to 5856 - 5856 1/2 8th ave
Valuation:
N/A
Permit #:
21042-10001-77884
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 19016-40000-06244 to capture the $400 investigation fee. comply w/dept. order with an effective date 2-22-19. permit to expire 30-days from issue date. ceis 846661
Valuation:
N/A
Permit #:
19016-40002-06244
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New tub/install water heater comply with department order effective date 02/22/2019. permit will expire 30 days from issuance date. ceis #846661
Valuation:
N/A
Permit #:
19042-40000-04972
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to permit # 19044-40000-02477 to change address from 9606 s. defiance ave. to 9609 s. defiance ave. 03/05/2019
Valuation:
N/A
Permit #:
19044-40001-02477
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to permit # 19041-40000-07830 to change address from 9606 s. defiance ave. to 9609 s. defiance ave. 03/05/2019
Valuation:
N/A
Permit #:
19041-40001-07830
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to permit # 19016-40000-06244 to change address from 9606 s. defiance ave. to 9609 s. defiance ave. 03/05/2019
Valuation:
N/A
Permit #:
19016-40001-06244
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Demolish 160 sqft open patio cover at rear of house. demolish. exempt per ceqa section 15301 (l) (4)
Valuation:
N/A
Permit #:
1810090036
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove drywall as needed behind service panel & install r-13 insulation 12 x 6
Valuation:
$500
Permit #:
1807160044
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 2-100amp service panels on duplex same location
Valuation:
N/A
Permit #:
1807160029
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tankless water heater at side of house
Valuation:
N/A
Permit #:
1810090008
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical. for tankless water heater
Valuation:
N/A
Permit #:
1810090020
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Change out 12 windows (same size & type for residential buildings only). kitchen & bathroom remodel (for residential buildings; no structural changes). combine with electrical & plumbing. tear off existing roofing. re-roof 15 squares w/class a or b materials weighing less than 6 pounds per sq. ft. replace damaged framing members (less than 10% of replacement cost of building) for hous... see more
Valuation:
$10,000
Permit #:
14016-40000-21137
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert the existing duplex into single family dwelling by removing a portion of wall between the two units convert kitchen into a bathroom and convert family room into a bedroom
Valuation:
$20,000
Permit #:
14016-70000-14316
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Two story addition - living room, family room on 1st floor extend two closets on 2nd floor convert part of existing living room into bedroom - 469.5 sf
Valuation:
$67,300
Permit #:
1708030034
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Add/altr
20330 Caron Cr, CA
2017-08-17
Two story addition - living room, family room on 1st floor extend two closets on 2nd floor convert part of existing living room into bedroom - 469.5 sf
Valuation:
$67,300
Permit #:
1708030034
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Supplemental to permit# 21141-90000-18238 to change - from owner -builder to contractor & change of address to 5856-5856 1/2 8th ave
Valuation:
N/A
Permit #:
21141-10001-18238
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Stucco patch repair @ rear of building. change out (1) window same size and location. 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:
N/A
Permit #:
08016-70000-07696
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Quality A 2 Z Home Improvement License info
Verified License
| License # | 1108414 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Quality A 2 Z Home Improvement at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 780842 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Quality A 2 Z Home Improvement 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 | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
42
Permits
- Building permit records show that Quality A 2 Z Home Improvement has worked on 42 permitted projects.
Quality A 2 Z Home Improvement Employees
RH
Roberto Ibarra Hernandez
Rmo / Ceo / Pres
RH
Roberto Ibarra Hernandez
Rmo / Ceo / Pres
RB
Ronald Butler
Sole Owner