Updated: Jul 11, 2026
Location and Projects
Address
1435 10TH ST, Los Osos, CA, 93402
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Shamrock Plumbing
Shamrock Plumbing, 1435-10 Th St, Los Osos, CA (Employees: Dennis Neil Peck, Jose Luis Gudino, and Leslie Peter Copley) holds a Plumbing license and 2 other licenses according to the California license board.
Their BuildZoom score of 89 does not rank in the top 50% of California contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Shamrock Plumbing, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Shamrock Plumbing Services
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Shamrock Plumbing Contact Information
Phone Number: (408) 247-0677
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Address: 1435 10TH ST, Los Osos, CA 93402
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Shamrock Plumbing Los Osos
Quality
89
30th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Shamrock Plumbing has a BuildZoom score of 89, which places them above 30% of 336,931 contractors in California.
Activity
|
4 projects
|
2025 |
|
2 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Shamrock Plumbing has worked on at least
8.0 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
|
8 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Shamrock Plumbing mostly works on
plumbing project
projects.
Pricing
|
2 projects
|
< $5k |
|
2 projects
|
$5k-$20k |
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.
Shamrock Plumbing Reviews
1 out of 5 stars, based on
1
review
-
By Jenny B.January 3, 2022Various Plumbing Work$300
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace gas water heater in garage with 240v heat pump water heater. all plumbing present in garage but will need to pull a new 240v line
Valuation:
$6,000
Permit #:
BLD25-02372
Status:
final
Fee:
$593
Permit Type:
N/A
Building Type:
N/A
Replace hot and cold water lines replace sections of drain lines relocate tankless water heater. 1/3/24 addendum to permit to replace private property sewer lateral
Valuation:
$12,000
Permit #:
LPC2023-00438
Status:
final
Fee:
$659
Permit Type:
Single family res...
Building Type:
N/A
Replace 100g water heater
Valuation:
$2,500
Permit #:
P2025-0016
Status:
issued
Fee:
$223
Permit Type:
Water heater
Building Type:
N/A
Installing mop sink
Valuation:
N/A
Permit #:
PLM25-00333
Status:
complete
Fee:
$194
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
2025 096111 MF
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace water main from meter to house
Valuation:
$3,000
Permit #:
LPC2022-03196
Status:
complete
Fee:
$153
Permit Type:
Single family res...
Building Type:
N/A
Replacing sewer lateral from house to street foc 10 feet
Valuation:
$4,000
Permit #:
BLD24-01148
Status:
issued
Fee:
$336
Permit Type:
N/A
Building Type:
N/A
Replace existing sewer line from house to existing clean out 11 pl to foc and 30 pl to cl
Valuation:
$1,200
Permit #:
BLD2020-59851
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 2-fans
Valuation:
N/A
Permit #:
P22-00014
Status:
issued
Fee:
N/A
Permit Type:
Over the counter
Building Type:
N/A
Install 2-fans
Valuation:
N/A
Permit #:
M22-00012
Status:
issued
Fee:
N/A
Permit Type:
Over the counter
Building Type:
N/A
Install 2-fans
Valuation:
N/A
Permit #:
E22-00023
Status:
issued
Fee:
N/A
Permit Type:
Over the counter
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
2022 662964 RS
Status:
filed
Fee:
N/A
Permit Type:
Duplex
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
2022 662956 RS
Status:
filed
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
2022 663061 RS
Status:
final
Fee:
N/A
Permit Type:
Duplex
Building Type:
N/A
Replacing current water heater
Valuation:
N/A
Permit #:
PLMWH2023-00017
Status:
final
Fee:
N/A
Permit Type:
Water heater outs...
Building Type:
N/A
Plumbing- r/r water line from meter to house
Valuation:
N/A
Permit #:
BLD2019-53701
Status:
final
Fee:
$56
Permit Type:
N/A
Building Type:
N/A
Relocate w h to exterior and copper repipe
Valuation:
N/A
Permit #:
PLM13-01111
Status:
complete
Fee:
$135
Permit Type:
N/A
Building Type:
N/A
Sewer
Valuation:
N/A
Permit #:
18-0559
Status:
final
Fee:
$194
Permit Type:
Sewer
Building Type:
N/A
Bonjour crepe- comm'l ti(non-structural)partition walls.install one type-1 hood. install electric cooking equipment.do electrical plumbing work as required(1077sqft);no re-roof file scanned box 430 plan scanned box 498
Valuation:
N/A
Permit #:
11010041
Status:
final
Fee:
$2,922
Permit Type:
N/A
Building Type:
N/A
** 1/13/22 revised permit to repipe gyp repair per applicant's request and inspection notice dated 1/13/22 (hm)
Valuation:
N/A
Permit #:
2021 061856 MF
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
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BZ Score
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Avg Project
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BZ Score
$25K
Avg Project
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Projects
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BZ Score
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Avg Project
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Projects
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Verified License
BuildZoom confirmed this contractor's license
Shamrock Plumbing License info
Verified License
| License # | 860285 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Shamrock Plumbing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 793624 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Shamrock Plumbing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 774318 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Shamrock Plumbing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
89
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Everest National Insurance Company |
28
Permits
- Building permit records show that Shamrock Plumbing has worked on 28 permitted projects.
Shamrock Plumbing Employees
DP
Dennis Neil Peck
Sole Owner
JG
Jose Luis Gudino
Sole Owner
LC
Leslie Peter Copley
Sole Owner
Please read this before hiring them. Sorry it's long, but it's important if you don't want to get screwed!
My family & I have been loyal customers to Shamrock for over 15 years. My grandfather hired them many times, my mother worked w/them frequently over the last 5 years, & I recently hired them for several plumbing requests. Until recently, they have been fantastic! With Luis being their lead & ensuring that everything in the field was done above expectation. There were never any issues when they were working w/my grandfather & mother. As soon as my grandfather passed, & they had to work solely w/my mother as the head of the house (a female vs. a male), the problems began. Now working w/me as the new head of the house, they have been nothing but rude, demanding, & unprofessional. This will be the LAST time I will EVER be working w/them again since Luis has been promoted & is no longer in the field, leaving Paul as owner to run the show and deal poorly w/customers.
After multiple back & forth conversations & a detailed email regarding the work that needed to be done, workers were sent to complete the work with LITTLE TO NO INSTRUCTION! They had no knowledge of the detailed email & did the bare minimum of work while they were at my house. Things like installing my kitchen faucet backwards because the soap dispenser was in the way of the handle, without even speaking to us about potential solutions (such as not installing the soap dispenser) or letting us know that it would be backwards! Leaving 5 feet of piping in our driveway that they removed & replaced w/copper piping (but just left their trash behind). Throwing out the entire installation box from the kitchen faucet, including any additional parts, instructions, & registration information!! Leaving the sensor for our new faucet just dangling under our sink without even attempting to properly mount it. Lastly, we have requested MULTIPLE TIMES for them to update our records to my phone number & remove my mother's number. Yet they are still calling on her phone instead of calling me. Their work & attitude during the entire installation was completely unprofessional & absolutely unacceptable.
We contacted the office to discuss the issues w/Paul, as well as calling Paul on his direct line which he had personally provided to us. He was on vacation at the time & was not happy that we were contacting him regarding this job, again. Once he returned from vacation, he showed up at our house & demanded to know what the problems were...obviously already annoyed and w/no seeming interest as to how HIS CUSTOMERS were treated. We explained the issues & were told "well, my guys don't act like that, they are just quiet". When we again attempted to explain the situation & our dissatisfaction w/the work, we were told to "shut up" so that he could talk over us! His demeanor & attitude were so abrasive & brash that I could hardly believe we had been working with them for over 15 years. He put my mother in tears before he left! As this was MY first experience w/Paul, I can definitely say I would NEVER be interested in working or dealing w/him or his company EVER AGAIN!!
When it came time for us to pay for this pathetic excuse for work, we received an invoice & called to make a partial payment. Being loyal customers for over 15 years & ALWAYS paying our bill in full (frequently before the invoice is even received), you would think that breaking an invoice up into payments would not be a problem. We made one payment last month w/no issues. However, when calling to make the second payment this month, we were questioned on if a payment arrangement had been set up w/Paul. Then advised that he would be calling us promptly. Paul then called to yell at us (not discuss anything, just bark orders) yet again & demand immediate payment. Stating that we have to ask him to in order to be able to make any payments. He then threatened to put a lien on our house!! There was no inquiry regarding if we were having trouble making payments, empathy for a 15-year customer, ZERO cares were given! Now, if this invoice was for thousands of dollars...I would maybe understand. But it is for LESS THAN $300!! So apparently this is now the type of company that threatens its customers instead of trying to find a solution. They must be really financially hurting for our invoice to be affecting them so intensely.
Don't waste your money or your time trying to deal w/them. They will simply overcharge you, misunderstand your needs, & then yell at you for their misunderstanding. Definitely look elsewhere for a local plumber! It is sad that this company has gone so far downhill, as they have been our go-to plumbers for over 15 years. But they are not the same company they once were. We have never even received an apology for the way that we have been treated by the OWNER OF THE COMPANY. Everyone has bad days or miscommunications, but the way that this situation is being handled is appalling.