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Costello's Plumbing

Licensed
Licensed
This pro is currently not available for Emergency Plumbing
This pro is currently not available for Emergency Plumbing

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Why this pro?

This pro has been in business for 9 years and handles pipe installs and repairs, along with drain repairs. Customers say they’re responsive, efficient and deliver high-quality workmanship.

Summarized from the pro's profile. Review their profile for the latest.

About
With 10 years in business and a small, dedicated team of 4 professionals, we handle your plumbing needs with care, speed, and precision. From water heater installation and repair to garbage disposals, toilets, faucets, and full pipe replacements, we’re equipped to tackle both everyday jobs and emergency plumbing issues. As a licensed plumbing contractor, we take the time to diagnose the problem correctly, explain your options clearly, and complete the work safely and up to code. Whether it’s a simple repair, a new installation, or a full inspection, you can count on reliable service and honest recommendations. Tell us what’s going on with your plumbing, and we’ll help you find the best solution.
Overview

Hired 321 times

Background checked

License verified

4 employees

10 years in business

Business hours

This pro hasn't listed their business hours.

Payment methods

This pro accepts payments via Cash, Check, Credit card, PayPal, Square cash app, Venmo, and Zelle.

Top Pro status

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2025

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2024

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2023

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2022

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2021

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2020

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2018

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2017

Credentials

License verified

C36 – Plumbing Contractor

License state: CA

Background checked

Passed by Gary Costello, Jr on Apr 28, 2021.

Services offered
Emergency plumbing issue

Leaking or burst pipes or appliances

Clogged toilet or drain

Sewer backup

Flooding

Affected appliances or fixtures

Toilet

Sink or faucet

Shower or bathtub

Water heater

Property type

House

Condo/Apartment

Townhouse

Business

Projects and media
Projects and media
Reviews

Customers rated this pro highly for professionalism, responsiveness, and work quality.

Great 4.8

219 reviews

5

91%

4

4%

3

1%

2

1%

1

3%

Read reviews that mention:


pro avatar
Mattea S.

3 weeks ago

Hired on Thumbtack

Details: 1 toilet • Municipal water (most common) • House

Toilet Repair
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Jo A.

May 2, 2025

Hired on Thumbtack

Details: No, I do not need to replace a sink • As recommended by professional • 0 sinks • 3 faucets • House

Sink or Faucet Installation or Replacement
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Alisa D.

Dec 31, 2024

Hired on Thumbtack

The plumber was easy to schedule and did a great job clearing the clogged drain. He did a good job of keeping the space clean, even when working through the muck.

Details: No, repair is not urgent • Only one drain has issues • Clogging • Condo/Apartment

Plumbing Drain Repair
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Lily L.

Dec 30, 2024

Hired on Thumbtack

Costello’s Plumbing was great. They provided quick and professional service. They helped identify our issues with our main sewage drain, provided a fix and long term advice. Thanks!

Details: Yes, repair is urgent • Part of a larger issue with the plumbing system • Clogging • Gurgling sounds • Unpleasant odor • House

Plumbing Drain Repair
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Michelle R.

Aug 30, 2023

Hired on Thumbtack

Costello's Plumbing - namely the Owner Gary and his Tech Miguel - jumped on my project immediately. Gary called me back in under an hour and I was completely freaked out how much water was leaking from my shower faucet. He was very calm and sent his tech Miguel out that very day to assess my problem. Miguel was very knowledgeable and fixed the problem in a little over one day. I'm including pictures of the beautiful new faucet and shower head. Part of the wall behind the shower had to be cut out! Miguel saw how freaked out I was about that, but he stayed so focused and calm that it calmed me down, too!! HIGHLY RECOMMEND and wish I could give 10 STARS! Will call Costello's again for any future plumbing needs. GREAT VALUE for the services I received! Thank you Gary and Miguel!

Details: 0 sinks • One handle controls both hot and cold water • 1 faucet • A month ago or longer

Sink or Faucet Repair