- License number
- 1089561
- Licensed for
- General Engineering, Electrical, Heating, Ventilation & Air-Conditioning, Plumbing
- First issued
- 2022
- Valid through
- Apr 2028
- Bond
- Bonded $25,000
- Workers' compensation
- Workers' comp insured · through Jan 2027
- Source checked
- Jul 28, 2026
Public evidence profile · Checked May 2026
Heise's Plumbing
Credentials & registries
2 credentials shown
No Trust Score yet
- Rated 4.7 from 789 reviews
- 2 credentials shown
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
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
- Porch789 reviews · 4.7 avg
Local context
Rated 4.7, in line with the local average for plumbers in San Francisco
Across 6 plumbers in San Francisco, 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
2Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source reference
- BL-024492
- Source checked
- Jul 14, 2026
Sources
3 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
Heise's Plumbing has been servicing the San Francisco area for the past 60+ years offering residential and commercial services. From technical services to consulting - we do it all!
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 Heise's Plumbing before you contact them.
Run Rogue Contractor Check →Good to know
Common questions about Heise's Plumbing
Is Heise's Plumbing a legitimate business?
Heise's Plumbing has 789 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 Heise's Plumbing?
Heise's Plumbing has 789 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 Heise's Plumbing's reviews are genuine?
Heise's Plumbing's 789 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 Heise's Plumbing qualified and accredited?
We hold 2 independently sourced credentials for Heise's Plumbing, including California Contractors State License Board, City of Berkeley Business License (Construction). 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.
