Updated: Feb 02, 2026
Location and Projects
Address
P O BOX 882, Lomita, CA, 90717
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Knock - Out Plumbing
Knock - Out Plumbing, Lomita, Po Box 882, Lomita, CA (Owned by: Carlos Manzano) holds a Plumbing license according to the California license board.
Their BuildZoom score of 99 ranks in the top 15% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Knock - Out Plumbing, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Knock - Out Plumbing Services
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Knock - Out Plumbing Contact Information
Phone Number: (310) 493-0348
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Address: P O BOX 882, Lomita, CA 90717
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Converting garage to adu installing plumbing fixtures
Valuation:
N/A
Permit #:
25042-40000-08247
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Hvac for wall heater. comply with department order effective date 05/04/2022. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
22044-20000-05071
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Whole house repipe
Valuation:
N/A
Permit #:
PLM2023-00018
Status:
final
Fee:
N/A
Permit Type:
Remodel
Building Type:
N/A
Install water heater
Valuation:
N/A
Permit #:
22042-30000-05437
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Reroute 3/4 water line leaking under slab floor for toilet basin and shower
Valuation:
N/A
Permit #:
19042-40000-07792
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remove floor heater and install wall heater
Valuation:
N/A
Permit #:
20044-30000-06968
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Install 2 earthquake gas valves
Valuation:
N/A
Permit #:
23042-40000-18224
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Install (1) water heater & vent
Valuation:
N/A
Permit #:
19042-40000-22738
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Earthquake valve
Valuation:
N/A
Permit #:
19042-40000-05600
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Wall heater
Valuation:
N/A
Permit #:
19044-40000-07093
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replacing gas line on the roof
Valuation:
N/A
Permit #:
1807030015
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace gas line on roof
Valuation:
N/A
Permit #:
1807050005
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace water heater
Valuation:
N/A
Permit #:
17042-40000-29499
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace copper water supply pipes with ex pipes for kitchen tub basin and toilet
Valuation:
N/A
Permit #:
16042-40000-15377
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace abs 3 main and tub and basin drain in carport overhead to castiron drains
Valuation:
N/A
Permit #:
14042-40000-22679
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace plumbing risers for apartment. 103 203 303
Valuation:
N/A
Permit #:
PLM2023-00020
Status:
final
Fee:
N/A
Permit Type:
Repipe or repair
Building Type:
N/A
Building Permit
1505 Firestone Bl, CA
2016-07-21
Relocate sink install new floor drain
Valuation:
$0
Permit #:
1607210038
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installed 3-compartment sink 1 mop sink 1 floor drain 1 prep sink & 2 floor sinks
Valuation:
N/A
Permit #:
14042-40000-12552
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to permit # 11042-40000-15726 to include 24820 1/2 24822 24822 1/4 & 24822 1/2 s. avalon blvd to the adress
Valuation:
N/A
Permit #:
11042-40001-15726
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Install 2 eq valves
Valuation:
N/A
Permit #:
16042-40000-08067
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Knock - Out Plumbing License info
Verified License
| License # | 854512 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Knock - Out Plumbing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
99
BuildZoom Score
Bonded
| Bonded Agent | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
52
Permits
- Building permit records show that Knock - Out Plumbing has worked on 52 permitted projects.
Knock - Out Plumbing Employees
CM
Carlos Manzano
Sole Owner
CM
Carlos Manzano
Owner