Updated: Apr 22, 2026
Location and Projects
Address
P O BOX 63623, Irvine, CA, 92602
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Rjo Plumbing Services
Rjo Plumbing Services, Irvine, Po Box 63623, Irvine, CA (Employees: Alma Janet Okamoto and Roger Yukio Okamoto) holds a Plumbing license according to the California license board.
Their BuildZoom score of 98 ranks in the top 16% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Rjo Plumbing Services, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Rjo Plumbing Services Services
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Rjo Plumbing Services Contact Information
Phone Number: (714) 258-7110
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Address: P O BOX 63623, Irvine, CA 92602
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Building Permits by Rjo Plumbing Services
This is a sample of this contractor's permits. Click here to access their complete permit history.
Septic tank removal we are connecting the existing plumbing fixture to the existing house sewer line. kitchen laundry sink and garage are connecting to existing sewer
Valuation:
$4,000
Permit #:
COMBR-2022-00484
Status:
final
Fee:
$287
Permit Type:
N/A
Building Type:
N/A
Repair low pressure gas piping systems
Valuation:
N/A
Permit #:
20042-30000-17666
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Repair low pressure gas piping systems
Valuation:
N/A
Permit #:
20042-30000-17665
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Repair low pressure gas piping systems
Valuation:
N/A
Permit #:
20042-90000-14943
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Repairing water line (exterior)
Valuation:
N/A
Permit #:
20042-10000-06292
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
(9) re-pipe fixtures and (2) waste & vent alter/repair
Valuation:
N/A
Permit #:
19042-30000-02755
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Pex repipe. (15) fixtures *subject to field inspection*
Valuation:
N/A
Permit #:
00726089-MISR
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sewer replacement from house to yard (no curb or street work)
Valuation:
$0
Permit #:
P17-33702
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install (4) earthquake valves
Valuation:
N/A
Permit #:
17042-10000-01335
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Sewer replacement (appx 25ft) & (2) clean outs w/in 25ft
Valuation:
N/A
Permit #:
16-1340
Status:
final
Fee:
$80
Permit Type:
N/A
Building Type:
N/A
Install seismic shut-off valves
Valuation:
N/A
Permit #:
15042-90000-06610
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to permit# 20042-90000-14943 to addition repairs to existing gas lines and risers
Valuation:
N/A
Permit #:
20042-10001-14943
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to permit# 20042-30000-17666 to addition repairs to existing gas lines and risers
Valuation:
N/A
Permit #:
20042-10001-17666
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to permit# 20042-30000-17665 to addition repairs to existing gas lines and risers
Valuation:
N/A
Permit #:
20042-10001-17665
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Interior remodel of single family residence and window change out
Valuation:
$60,000
Permit #:
BS1803539
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family res...
Change bedroom 5 to living room addition patio door structural upgrades
Valuation:
$15,000
Permit #:
BS1806160
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family res...
No Description Available
Valuation:
N/A
Permit #:
17042-10000-01335
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
15042-90000-06610
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Plumbing: plumbing for tenant improvement to create two new bathrooms ref bld2016-02377
Valuation:
N/A
Permit #:
BLD2016-02377
Status:
expired
Fee:
N/A
Permit Type:
Tenant improvement
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Rjo Plumbing Services License info
Verified License
| License # | 994609 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Rjo Plumbing Services at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
98
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
14
Permits
- Building permit records show that Rjo Plumbing Services has worked on 14 permitted projects.
Rjo Plumbing Services Employees
AO
Alma Janet Okamoto
Officer
RO
Roger Yukio Okamoto
Rmo / Ceo / Pres