Core Plumbing

Company Facts

Core Plumbing at a Glance

By the numbers

Google rating

4.8out of 5

Customer reviews

1418on Google

Rating and review count pulled from Google on September 27, 2026.

What We Like

• 4.8 stars from 1,418 Google reviews as of September 27, 2026, a large evidence base
• Published hours are 24 hours a day, every day, with advertised emergency service
• Unusually deep valve list: pressure reducing, automatic shut-off and seismic gas valves
• Covers both residential and commercial, including ice machine and appliance hookups
• Drain jetting offered alongside standard clearing, useful for older cast iron and clay laterals
• Sewer, water and gas repiping all handled in-house

Things to Consider

• Pricing is not published, so after-hours and weekend call-out rates need confirming by phone
• The website lists a different phone number to the Google profile, worth checking which reaches dispatch
• A larger multi-service operation may not be the cheapest option on small, simple repairs

Google rating

4.8

Based on 1418 Google reviews

Review data updated September 27, 2026

View on Google Maps →

Rating Distribution

• 5 stars91%
• 4 stars4%
• 3 stars1%
• 2 stars1%
• 1 star4%

Plumbing in San Diego splits roughly into two worlds. There are the mid-century tract homes in Clairemont, Allied Gardens and parts of North Park with galvanised steel or early copper supply lines and cast iron drains, and there are the newer builds and condos where the problems are more often fixtures, water heaters and pressure regulation. A company that wants to serve the whole county has to be comfortable in both, and the published service list here reads like it was built for exactly that.

Water heaters look like a core of the business. Traditional tanks, tankless installs, plus repair and maintenance are all listed separately, which usually signals a company doing enough volume to stock parts and carry more than one brand. Tankless conversions are popular locally because of small utility closets and garage space at a premium, but they are not a like-for-like swap. Gas line sizing, venting and condensate all come into it, and the honest version of that conversation includes the cost of the upgrade rather than just the unit. Ask for the whole scope in writing before you agree.

The valve work deserves attention. Pressure reducing valves, automatic water shut-off valves and seismic gas valves all appear on the service menu, and each one is a genuinely San Diego concern. City water pressure in hillside neighbourhoods can run well above what fixtures and flex lines are rated for, and a failed PRV is behind a surprising share of burst supply lines and dripping relief valves. Seismic shut-off valves are a Southern California requirement in various circumstances and show up during permit work and property transfers. If a plumber understands those three items properly, they tend to understand the rest of a system too.

Drain services run from clearing and repair through to jetting. Jetting matters in older San Diego housing stock where cast iron has scaled and roots have found the joints in clay laterals. Cabling a line clears it for a season. Jetting, followed ideally by a camera inspection, tells you whether the pipe itself is finished. Anyone quoted a full lateral replacement should ask to see the camera footage and ask whether trenchless lining or pipe bursting is possible given the yard, the setback and the street cut permit that comes with digging in the public right of way.

Repiping appears for sewer, water and gas. That is the biggest ticket most homeowners here will face, and it is the job where quotes diverge most. Two bids on the same house can differ by five figures depending on whether the work runs through the attic or under the slab, how many walls get opened, whether drywall repair is included and which permits are pulled. Worth asking who handles inspection scheduling with the city or county, and what the warranty covers on labour as distinct from materials.

Remodel plumbing and appliance installation round out the residential side, and there is a separate commercial list covering water heaters, filtration, drains, water features and repiping. For a property manager or a small restaurant, having one number for both the ice machine line and the grease-heavy kitchen drain has obvious appeal. Core plumbing work of that mixed kind also means scheduling can flex, so ask where your job sits in the queue if it is not an emergency.

The Google rating of 4.8 from 1,418 reviews, read on September 27, 2026, is the strongest single piece of evidence in the file. Volume at that level usually means a multi-truck operation rather than a one-van shop, and recent reviews visible on the company site mention filtration replacements, tankless servicing and pressure regulator swaps, which lines up with the advertised scope.

Who it suits: households and businesses that want a single contractor for both urgent and planned work, and who value 24/7 availability. Who it may not suit: anyone hunting the lowest possible number on a simple repair. Larger crews with dispatch, night coverage and marketing carry overheads that a solo plumber does not. Get the estimate in writing, ask specifically about after-hours and weekend rates rather than assuming the free estimate covers diagnosis, and confirm the licence number against the California State License Board record before work starts. That last step takes two minutes and applies to every bid you collect, not just this one. Compare core plumbing quotes against at least one smaller local outfit on any job over a few thousand dollars.

About This Business Profile

Last reviewed

September 2026

Profile last updated

September 27, 2026

Google review data updated

September 27, 2026

Reviewed by

Dana Whitfield, Senior editor, home services

Sources checked

Google Business Profile, Company website

Sponsorship status

No commercial relationship