Updated: Jun 12, 2026
Location and Projects
Address
6492 CARTER ST, Chino, CA, 91710
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Western States Plumber
Western States, 6492 Carter St, Chino, CA (Employees: Casey David Spencer, Darin Kuwahara, and Darin Kuwahara) holds a Low Voltage Systems license and 1 other license according to the California license board.
Their BuildZoom score of 111 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Western States, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Western States Services
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Western States Contact Information
Phone Number: (714) 336-0508
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Address: 6492 CARTER ST, Chino, CA 91710
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Western States Chino
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Western States has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
48 projects
|
2025 |
|
46 projects
|
2024 |
|
42 projects
|
2023 |
Our building permit records indicate that Western States has worked on at least
136.0 projects over the past 3 years.
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.
Experience
|
16 projects
|
Commercial Renovations |
|
13 projects
|
Home Additions |
|
7 projects
|
New Constructions |
|
103 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Western States mostly works on
plumbing project
and commercial renovation
projects.
Pricing
|
10 projects
|
< $5k |
|
15 projects
|
$5k-$20k |
|
7 projects
|
$20k-$50k |
|
3 projects
|
$50k-$100k |
|
3 projects
|
$100k-$250k |
|
4 projects
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
|
2 projects
|
$1mil+ |
The typical size of their permits is approximately $12,100. This graph shows the distribution of these job values.
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.
Combo residential addition - (non adu normal home additions)
2025-05-30
(n) 1 993 sqft addition to (e) single family dwelling 1st floor - 1 108 sqft 2nd floor - 885 sqft includes all related mechanical electrical and plumbing as per approved plans note: home curretly has (4) bedrooms (2) bathrooms; will have (5) bedrooms (5.5) bathrooms
Valuation:
$200,000
Permit #:
COMR-2025-0257
Status:
pi - pending applicant signature
Fee:
$4,914
Permit Type:
N/A
Building Type:
N/A
Fire permit - fire sprinkler - commercial multi-family
2024-10-28
Adjust existing fire sprinklers on level 1 suite 100 (relocate 29 addition 8 remove 2) sprinkler heads and suite 150 (relocate 11 addition 3 remove 4) sprinkler heads to accommodate new wall and ceiling layout. addition new fire sprinkler system to level 2 suites 270 and 280 (58 sprinklers). tv
Valuation:
$3,300,137
Permit #:
FR-2024-292661
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of 4 heads off 36 flex hoses to 4 splitter boxes at fab level and corresponding piping up to heads of existing preinstalled valve from subfab system. installation of 2 heads off flex hoses to 2 cabinets at subfab level off existing manifold
Valuation:
$5,000
Permit #:
FSP2025-00152
Status:
issued
Fee:
$773
Permit Type:
N/A
Building Type:
N/A
Installation of new butterfly valves (9 locations) along three branch lines within a grid system to create isolation locations so that these areas can be shut down and drained for maintenance of tools or work on existing fp system. installation of new gas cabinet manifold for 4 future cabinets
Valuation:
$10,000
Permit #:
FSP2025-00102
Status:
issued
Fee:
$768
Permit Type:
N/A
Building Type:
N/A
Installation of 2 sprinkler heads in 2 gas cabinets in ca3. one cabinet in subfab quad 2 installed off 2x1 mechanical tee with 1 armover and drop. drop to have 1 locking ball valve and ah2 flex hose attached to cabinet with ab3 surface mount. sprinkler to be viking vk3021 with headguard and ent plated
Valuation:
$7,000
Permit #:
FSP2026-00136
Status:
issued
Fee:
$773
Permit Type:
N/A
Building Type:
N/A
Connection of gas cabinets to existing 1 outlets with locking ball valves. installation of 2 qty 2 pup peices with 1 thread-o-lets for 2 cabinets one in gas bunker and one at gridline 7 in subfab area. installation of vk3201 ent sprinkler heads in cabinets with headguards. all cabinet sprinkler heads set in cabinets off 36 flex hoses connected to 1 locking ball valves to 1 pipe drops ... see more
Valuation:
$10,000
Permit #:
FSP2026-00135
Status:
issued
Fee:
$773
Permit Type:
N/A
Building Type:
N/A
Supplemental permit to 25043-10000-00708 for early start permit. permit for inspection prior to plan check approval per approved modification. this permit is for a single inspection only. mod number #17803
Valuation:
N/A
Permit #:
25043-10001-00708
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Connect gas cabinet to existing fp system. flex head to attach to existing locking ball valve located on bull head 1 armover with one other existing fully connected gas cabinet. (new to match existing)
Valuation:
$2,000
Permit #:
FSP2025-00165
Status:
issued
Fee:
$773
Permit Type:
N/A
Building Type:
N/A
Installation of nfpa 13 sprinkler system for a high rise building. includes sprinklers standpipes 4 fire pumps and a fire tank. two 6 fire meter; two 6 backflow preventer
Valuation:
N/A
Permit #:
22043-10000-03188
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Space/345: addition 31 and relocate 9 fire sprinkler heads for new store layout. seismic upgrade to main and branch lines in area of the work only
Valuation:
$29,677
Permit #:
202505237133
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
15 - retail sales
Space/345: addition 31 and relocate 9 fire sprinkler heads for new store layout. seismic upgrade to main and branch lines in area of the work only
Valuation:
$29,677
Permit #:
202505237133
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
15 - retail sales
New installation of two fire protection drops with locking ball valves connecting flex hoses to two future gas cabinet locations. drops to be installed via 2"x1 mechanical tee cut-in off the existing branch line. new drop to gas cabinets to be installed zip-tied and plugged for future gas cabinet install and connection
Valuation:
$15,000
Permit #:
FSP2024-00249
Status:
final
Fee:
$354
Permit Type:
N/A
Building Type:
N/A
Installation of new fp manifold for 4 added sprinkler heads installed inside of splitter boxes (installed by others). piping to be routed from subfab 4 main and routed up through waffle slabbing. piping to be mounted to top of waffle slab. piped up through rmf and supported off unistrut structure housing the new splitter boxes
Valuation:
$5,000
Permit #:
FSP2025-00101
Status:
issued
Fee:
$768
Permit Type:
N/A
Building Type:
N/A
Installation of 4 new fp lines from existing manifold to 4 new splitter boxes. 1 sch 40 pipe to be routed off of existing locking ball vavles on manifold to new splitter box pre-drilled location for fp sprinkler installation (ent or wax coated pendants) location
Valuation:
$8,000
Permit #:
FSP2024-00281
Status:
final
Fee:
$354
Permit Type:
N/A
Building Type:
N/A
Installation of 4 new fp lines from existing manifold to 4 new splitter boxes. 1 sch 40 pipe to be routed off of existing locking ball vavles on manifold to new splitter box pre-drilled location for fp sprinkler installation (ent or wax coated pendants) location
Valuation:
$8,000
Permit #:
FSP2024-00280
Status:
final
Fee:
$354
Permit Type:
N/A
Building Type:
N/A
Installation of 4 new fp lines from existing manifold to 4 new splitter boxes. 1 sch 40 pipe to be routed off of existing locking ball vavles on manifold to new splitter box pre-drilled location for fp sprinkler installation (ent or wax coated pendants) location
Valuation:
$8,000
Permit #:
FSP2024-00279
Status:
final
Fee:
$354
Permit Type:
N/A
Building Type:
N/A
Install new nfpa 13 system sprinkler system and standpipe system. 4 fire service and 4 dc underground approved under 25043-10000-03618
Valuation:
N/A
Permit #:
24043-10000-04084
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Install new nfpa 13 system sprinkler system and standpipe system. 4 fire service and 4 dc underground approved under 25043-10000-03618
Valuation:
N/A
Permit #:
24043-10000-04083
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Hook up of fire sprinkler system within existing factory built modular homes that have state approved fire sprinkler system. work consist of connection to site water supply ar riser location and connections of the existing pipes betwwen modular units
Valuation:
N/A
Permit #:
24043-90000-00061
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Hook up of fire sprinkler system within existing factory built modular home that have existing state approved fire sprinkler system. work to consist of connection to site water supply at riser location and connection of existing pipes between modular units
Valuation:
N/A
Permit #:
24043-90000-00062
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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BZ Score
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Verified License
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Western States License info
Verified License
| License # | 936948 |
| Status | Active |
| State | California |
| Type | Low Voltage Systems |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Western States at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 488359 |
| Status | Inactive |
| State | California |
| Type | Fire Protection, Electrical |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Western States at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $25,000 |
Insured
| Workers Comp Provider | Zurich American Insurance Company |
625
Permits
- Building permit records show that Western States has worked on 625 permitted projects.
Western States Employees
CS
Casey David Spencer
Rme
DK
Darin Kuwahara
Sole Owner
DK
Darin Kuwahara
Sole Owner
EP
Eugene Clarence Postma
Ceo / President
JI
June Richard Charles Iii
Officer
LR
Larry Edwin Rothmier
Officer
SL
Steven Paul Lee
Officer
TS
Travis Lee Sticka
Rme
WB
William Merrill Beadie
Officer