About us
Family-run plumbing in Sonoma County since 2004
22 years, 29 cities, and one simple idea: quality service at a reasonable price.
22+ years
Serving Sonoma County since 2004
4.9 stars
21 Google reviews
Licence #841938
Licensed, bonded & insured
Straight answers
Fair pricing, no upsells
Karl D'Angelo
Owner & licensed plumber
Who is Karl D'Angelo?
Karl D'Angelo is the owner and working plumber behind Avanté Plumbing in Santa Rosa, California. He has held California CSLB licence #841938 (C-36 Plumbing) as a sole proprietor since 30 June 2004 — 22 years — and is bonded for $25,000 and carries workers' compensation insurance. He personally runs the jobs rather than dispatching them, which is why so many of the 21 Google reviews mention him by name.
Avanté Plumbing grew out of a straightforward frustration: plumbing shouldn’t be a black box. Too many homeowners were being handed a bill without ever being told what was actually wrong, or being sold a replacement when a repair would have done.
So the business was built the other way round. Show up when you said you would. Explain the problem in language that makes sense. Quote it before you start. Then do the work properly, and stand behind it.
22 years on, that’s still the whole model — now across 29 cities in Sonoma and Marin County, covering 21 services from a leaking faucet to a full sewer main replacement.
How we work
What you can expect on every job
- 1
Diagnose before you replace
A dripping shower might need a specialty cartridge, not a new valve. We find out which before anything gets pulled apart — that's usually the difference between a small bill and a big one.
- 2
The person who quotes it does it
No dispatcher, no commissioned salesperson, no handoff to a subcontractor you've never met. Karl runs the jobs.
- 3
Quality service at a reasonable price
That's the idea the business was founded on in 2004 and it hasn't changed. Fair pricing, explained up front, with no pressure to buy work you don't need.
- 4
Leave it better than we found it
Clean work area, tidy connections, and setups that are easy to service later. The parts nobody sees are the parts that decide whether it lasts.
Credentials
Licensed, bonded and insured
- CSLB licence
- #841938
- Classification
- C-36 Plumbing
- Contractor's bond
- $25,000
- Licensed since
- June 2004
California law requires contractors performing work over $500 to be licensed by the Contractors State License Board. You can verify licence #841938 at any time on the CSLB website.
In their words
What customers say about Karl
“We had a pipe leak in the side of my girlfriend's house, and Karl made it there very quickly to help repair it! Very easy experience, extremely nice guy, and fair pricing. I'll definitely be recommending him to my friends from now on!”
“I needed someone on a Sunday. I had a clogged nose and only have one bathroom. He was very polite, showed up on time and took care of the problem. I'm very satisfied with the service I received!”
“Karl came with all the knowledge to fix our plumbing needs very efficient curtious and the the price was well worth it.”
Where to go next
Explore the work
Common questions
About Avanté — FAQs
How long has Avanté Plumbing been in business?
Since 30 June 2004 — 22 years. The CSLB register lists the licence as issued on that date to Karl D'Angelo Plumbing, held continuously as a sole ownership since.
Is Avanté Plumbing a one-person operation?
It is owner-operated. Karl D'Angelo runs the jobs himself rather than dispatching them to a crew you have not met, which is the single thing customers mention most often in reviews. The trade-off is honest: scheduling is tighter than a large outfit, and the person who quotes the work is the person who does it.
What does a C-36 licence actually cover?
C-36 is California's plumbing classification. It covers water supply, drainage, waste and vent systems, fixtures, water heaters and gas piping. It does not cover HVAC (C-20) or solar thermal (C-46), and we do not take on that work.
How can I verify the licence and insurance myself?
Search licence #841938 on the California Contractors State License Board site. It shows the classification, current status, the $25,000 contractor's bond and the workers' compensation policy — all of it public and independent of anything we tell you.
Sonoma & Marin County
Want a plumber who explains things?
Call (707) 231-0790 or send a note — we'll get back to you fast with a straight answer.
Licensed, bonded & insured · CSLB #841938 · Mon – Sun, 7:00 AM – 7:00 PM