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Location and Projects

Address
P O BOX 10446, Pleasanton, CA, 94588
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Diablo Plumbing Inc

Since our inception in 1987, Diablo Plumbing has been a family owned and operated business. Our Mission has always been to be the first-choice plumbing contractor for all our clients. We achieve this goal every day by performing work safely, on time & within budget. Our clients benefit from our advanced technology, decades of experience & an unparalleled standard of craftsmanship.

Today, Diablo Plumbing is an established industry leader. We have grown to one of Northern California’s largest plumbing contractors with projects spanning all across the San Francisco Bay Area. We feature a comprehensive breadth of service offerings. Through methods of Design • Build • Maintain • Service & Repair, we continually seek innovative ways to improve Design, Constructability, Prefabrication, Safety, Installation, Quality and Craftsmanship of today’s plumbing systems.

From BuildZoom: Diablo Plumbing Inc, Pleasanton, Po Box 10446, Pleasanton, CA (Employees: John William Ontiveros and Stacy Lyn Ontiveros) holds a Plumbing license according to the California license board.

Their BuildZoom score of 114 ranks in the top 2% of 336,931 California licensed contractors.

Their license was verified as active when we last checked. If you are thinking of hiring Diablo Plumbing Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.

Diablo Plumbing Inc Services

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Boiler/Water Heater Gas and Piping Sewer Laterals Plumbing

Diablo Plumbing Inc Contact Information

Phone: (925) 463-7900
Address: P O BOX 10446, Pleasanton, CA 94588

Diablo Plumbing Inc Pleasanton

Quality

114
98th percentile
How is the BuildZoom score calculated?
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Diablo Plumbing Inc has a BuildZoom score of 114, which places them above 98% of 336,931 contractors in California.

Activity

1 project
 2025
5 projects
 2023
Our building permit records indicate that Diablo Plumbing Inc has worked on at least 6.0 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.

Experience

6 projects
 Plumbing projects
Analyzing permits over the last 4 years shows that Diablo Plumbing Inc mostly works on plumbing project projects.

Pricing

2 projects
 < $5k
1 project
 $5k-$20k
1 project
 $20k-$50k
1 project
 $50k-$100k
Value Not Public: 1.0 project
The typical size of their permits is approximately $8,500. 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.

Building Permits by Diablo Plumbing Inc

Sort by: Notable Notable | Date Date | Job Value Job Value

This is a sample of this contractor's permits. Click here to access their complete permit history.

B alterations or additions
121 San Marin Dr, Novato, CA, 94945
2025-09-25
Installation of internal grease trap along with new kitchen drain lines to accomodate kitchen sinks
Valuation:
$61,500
Permit #:
B2025-1051
Status:
issued
Fee:
$4,026
Permit Type:
Non residential t...
Building Type:
N/A
Permit
1915 4th St, Berkeley, CA, 94710
2019-05-31
Cold shell improvements: facade renovation including installation of (2) new storefronts; partial roof reconstruction; demising of (3) tenant spaces; installation of (n) hvac equipment on roof only; (n) plumbing lines for tenant spaces installation of (n) hvac equipment on roof only; (n) plumbing lines for tenant spaces
Valuation:
$1,315,000
Permit #:
B2019-02250
Status:
final
Fee:
$80,167
Permit Type:
N/A
Building Type:
N/A
Commercial mechanical electrical or plumbing otc
7867 Amador Valley Blvd, Dublin, CA, 94568
2023-05-15
Replacement of sewer line approx 100 by trenchless piping running from the donut shop to luv2play unit
Valuation:
$40,000
Permit #:
BLDG-2023-01136
Status:
final
Fee:
$1,587
Permit Type:
N/A
Building Type:
N/A
Plumbing
1532 Harrison St, San Francisco, CA, 94103
2021-04-22
Work category: 8p; there are a total of (4) domestic water heaters located in the basement and a total of (2) hydronic boilers on the roof
Valuation:
N/A
Permit #:
PW20210311469
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Plumbing
422 Valencia St, San Francisco, CA, 94103
2023-04-11
Work category: 3pb; remodel of existing building with upgrades kitchens and bathrooms
Valuation:
N/A
Permit #:
PW20220823273
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential plumbing project
440 La Gonda Way, Danville, CA, 94526
2023-05-05
Replace water heater in kitchen 100 gal
Valuation:
$8,500
Permit #:
M23-029289
Status:
final
Fee:
$138
Permit Type:
N/A
Building Type:
N/A
Plumbing - over the counter
3108 Bayview Dr, Alameda, CA, 94501
2019-05-09
Emergency gas leak repair - replace 20-ft of 3/4-inch gas supply line underground. gas test. **modification 5/15/19 (dm) install earthquake shutoff valve - 3/4 little firefighter - horizontal - agv75
Valuation:
$4,200
Permit #:
P19-0089
Status:
final
Fee:
$405
Permit Type:
N/A
Building Type:
N/A
Residential plumbing project
25 Boulder Creek Ct, Danville, CA, 94526
2022-08-24
Repipe hot and cold water lines from water heater in garage to kit sink
Valuation:
$3,000
Permit #:
M22-028143
Status:
final
Fee:
$146
Permit Type:
N/A
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
394 12th St, Oakland, CA, 94607
2019-01-02
Plumbing for the interior renovation including apartment upgrades; structural improvement including new concrete foots walls and beams. tenant improvement. of first floor commercial space
Valuation:
N/A
Permit #:
P1703392
Status:
final
Fee:
$5,838
Permit Type:
N/A
Building Type:
N/A
Building - residential plumbing
1872 Newell Ave, Walnut Creek, CA, 94595
2023-06-21
Installation of earthquake valve
Valuation:
$400
Permit #:
BIPL23-007539
Status:
final
Fee:
$133
Permit Type:
N/A
Building Type:
N/A
Building - residential plumbing
1199 Cheshire Cir, Danville, CA, 94506
2023-02-22
Earthquake valve installation
Valuation:
$800
Permit #:
BIPL23-002021
Status:
final
Fee:
$133
Permit Type:
N/A
Building Type:
N/A
Plumbing
2465 Van Ness Ave, San Francisco, CA, 94109
2019-01-22
Ref 201612285989 to erect 7 stories 1 basement type i-b 41 residential units with mixed use building. building on block 0546 lot 001 & 002. (r-2, m, a-3, s-2)
Valuation:
N/A
Permit #:
PP20190122438
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
2221 Fruitvale Ave, Oakland, CA, 94601
2020-09-04
Plumbing for tenant improvement. at existing multi-unit residential building to include cosmetic upgrades at units and common areas. 14 units to be modified for ada compliance drx170723
Valuation:
N/A
Permit #:
P1803001
Status:
final
Fee:
$25,307
Permit Type:
N/A
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
10588 Topanga Dr, Oakland, CA, 94603
2019-05-01
Plumbing tenant improvement. for existing warehouse to convert space into multiple storage areas. no change to exterior. ada restrooms final b1504278
Valuation:
N/A
Permit #:
P1900753
Status:
expired
Fee:
$3,817
Permit Type:
N/A
Building Type:
N/A
Residential trade
6071 Laurel Creek Dr, Pleasanton, CA, 94588
2020-07-27
Repair to existing gas line fittings in multiple location of house due to leaks
Valuation:
$2,500
Permit #:
B20-0221
Status:
issued
Fee:
$100
Permit Type:
N/A
Building Type:
N/A
Non-residential plumbing - new
570 21st St, Oakland, CA, 94612
2019-07-18
Plumbing for the construction of a new 78 unit apartment complex along with a retail space set-aside
Valuation:
N/A
Permit #:
P1703512
Status:
final
Fee:
$21,717
Permit Type:
N/A
Building Type:
N/A
Plumbing
1532 Harrison St, San Francisco, CA, 94103
2021-08-05
Renewal for bid201607253262/pp20180507171
Valuation:
N/A
Permit #:
PP20210115820
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building - residential plumbing
505 Kingswood Pl, Danville, CA, 94506
2021-01-19
Installation of earthquake valve
Valuation:
N/A
Permit #:
BIPL21-000682
Status:
final
Fee:
$133
Permit Type:
N/A
Building Type:
N/A
Plumbing
2465 Van Ness Ave, San Francisco, CA, 94109
2020-02-27
Instal 2 boilers at rooftop 275k btu each boiler
Valuation:
N/A
Permit #:
PP20191209805
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential trade
7808 Creekside Dr, Pleasanton, CA, 94588
2020-11-09
Install 40 gallon water heater
Valuation:
$950
Permit #:
B20-2522
Status:
final
Fee:
$100
Permit Type:
N/A
Building Type:
N/A

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