- License number
- 501853
- Licensed for
- General Building, Electrical, Heating, Ventilation & Air-Conditioning, Plumbing
- First issued
- 1986
- Valid through
- Jun 2028
- Bond
- Bonded $25,000
- Workers' compensation
- Workers' comp insured · through Apr 2027
- Source checked
- Jul 28, 2026
Public evidence profile · Checked May 2026
John Owens Services Inc.
Public building permits
45 pulled, most recent 2025
Credentials & registries
California Contractors State License Board
No Trust Score yet
- Rated 4.7 from 389 reviews
- 1 credential shown
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Permitted work
45 permitsPublic building permits
Building permits this firm has pulled, from public city permit data (work seen: Maintenance, All other Construction). Evidence of permitted work, not a guarantee of workmanship or service quality.
Permits pulled45
Most recent
AreasMarin County, San Francisco
Work concentrated withinabout 10 miles
Approximate locations of this firm's permitted jobs. Check whether they've worked near you.
Pulling a building permit means the work was formally declared to the local authority and opened up to official inspection, a sign of working by the book, which businesses that cut corners tend to skip.
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
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.
4.7out of 5
Where these reviews are published
- Porch389 reviews · 4.7 avg
Sources
2 named public sourcesWhere this information comes from
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
Public evidence last checked May 2026
About
Look no further than John Owens Services, Inc. when you need fast, reliable plumbing, heating, and air conditioning services in San Rafael or Central and West Marin County. Since 1986, the company has proudly been serving residential properties including Eichler homes and other vintage houses. No jo... Read more about John Owens Services Inc.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
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 John Owens Services Inc. before you contact them.
Run Rogue Contractor Check →Good to know
Common questions about John Owens Services Inc.
Is John Owens Services Inc. a legitimate business?
John Owens Services Inc. has 389 independent public reviews, rated 4.7 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 John Owens Services Inc.?
John Owens Services Inc. has 389 public reviews, averaging 4.7 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.
How do I know John Owens Services Inc.'s reviews are genuine?
John Owens Services Inc.'s 389 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 John Owens Services Inc. qualified and accredited?
We hold 1 independently sourced credential for John Owens Services Inc., 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.
Has John Owens Services Inc. pulled building permits?
Public building-permit data shows John Owens Services Inc. has pulled 45 permits, most recently in 2025, including Maintenance, All other Construction. This is verified public permit data (not a self-declared claim) and a sign of permitted, inspected work.