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Public evidence profile

Big John's Plumbing

PlumberRiverside5.04 reviews · 2 independent public sources
Credentials & registries
California Contractors State License Board
Trust Score
51out of 100
Good record, gaps to check

51 out of 100, with a caution: newest review we found is from April 2022. Weigh that age against the score.

  • Rated 5.0 from 4 reviews
  • 1 credential shown

Newest review April 2022

How this score is worked out
Rating5.0 / 5
Review volumeLow · 4
Independent sources2 independent public sources
Credentials1 credential shown

How this score is made up

What customers say21.4 of 62.5
Independent checks20.8 of 25
Track record8.8 of 12.5
See the independent checks
  • Licenses and credentials8.3 of 12.5
  • Ways to reach them12.5 of 12.5

Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.

Call (951) 934-3931
Reviews · public evidence

What customers say

These review totals are published independently on the named public source below, not testimonials this business chose to show. We show the aggregate rating, review volume, and source attribution we hold so you can weigh the evidence yourself.

5.0out of 5
4 reviews in public evidenceReviewed on public review sources since 2019Most recent review
Where these reviews are published
  • Recommendedcompany4 reviews · 5.0 avg
Local context

Rated 5.0, above the local average for plumbers in Riverside

Across 6 plumbers in Riverside, the typical rating is 4.8 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.

Credentials and associations

Credentials and memberships

1

These credentials and memberships are attributed to named public sources. Check the source before relying on them.

California Contractors State License BoardCurrent: Active
License number
936582
Licensed for
Plumbing
First issued
2009
Valid through
Aug 2026
Bond
Bonded $25,000
Source checked
Jul 28, 2026
Open this license entry (opens in new tab)
Sources

Where this information comes from

2 named public sources

Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.

Review sources

Registers and membership directories

Check dates vary by source. Where we hold a date, the check shows it.

Independent checks

About this business

How long they've really been tradingOperating since at least 2019 (7 years), according to an independent source, not just their own word.
Website online since2011First public review2019
Your own checks

What to check before you hire

Worth checking yourself
Only a few public reviews are shown. Ask for recent references you can contact.
Agree the callout fee, the hourly or fixed rate, and whether parts are charged on top, in writing, before an emergency plumber starts. Out-of-hours overcharging and 'while I'm here' add-ons are common complaints.
Be wary of a plumber who, on a first visit, says your whole system or boiler must be replaced. Get a second opinion and an itemized quote (parts and labor separately) before agreeing to major work.
Gas work is licensed separately from general plumbing in most states. Make sure anyone working on a gas appliance or gas line is licensed for gas work under your state's rules, and ask for proof of that license before they start.

Want an extra legitimacy check? Run the Rogue Contractor Check on Big John's Plumbing before you contact them.

Run Rogue Contractor Check →
Good to know

Common questions about Big John's Plumbing

Is Big John's Plumbing a legitimate business?

Big John's Plumbing has 4 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.

What do customers say about Big John's Plumbing?

Big John's Plumbing has 4 public reviews, averaging 5 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.

How do I know Big John's Plumbing's reviews are genuine?

Big John's Plumbing's 4 public reviews come from a named public review source. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show the review source information and aggregate rating we hold rather than selling rankings, so you can weigh the evidence for yourself.

Is Big John's Plumbing qualified and accredited?

We hold 1 independently sourced credential for Big John's Plumbing, including California Contractors State License Board. Each is attributed to the body that issued it in the credentials section. For example, California Contractors State License Board is California's Contractors State License Board: the state body you must be licensed with to do contracting work in California.

Does Big John's Plumbing guarantee their work?

They state on their own website that we come and fix it until you are satisfied!. This is the business's own statement on their website, not something we have independently checked. Get the terms in writing before you agree to the job.

When was Big John's Plumbing's website registered?

Big John's Plumbing's website has been online since 2011, according to the public domain registry. This dates the website, not necessarily when the business began trading.

Compare your options

More plumbers in Riverside

These options match the same trade in Riverside. Compare the public evidence on each profile before you decide.

See all plumbers in Riverside