Updated: May 01, 2026
Location and Projects
Address
1310 Potrero Ave, San Francisco, CA, 94110
Use our bidding system to
request a quote
Professor Plumb
Professor Plumb specializes in the installation, maintenance and repair of plumbing, boiler, radiant heat, solar, steam and high efficiency systems.
From BuildZoom:
Professor Plumb at 1310 Potrero Ave, San Francisco, CA 94110, held a Plumber license (#805919) with the California contractors license board with an expiration date of 03-12-2018. We last verified the license was inactive on 04-30-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Professor Plumb Services
Start a project today:
Professor Plumb Contact Information
Phone Number: (415) 621-4673
Address: 1310 Potrero Ave, San Francisco, CA 94110
This is a sample of this contractor's permits. Click here to access their complete permit history.
Work category: 1p; for job card 201312093661 (jc # provided here as per dbi staff due to computer glitch that said valid jc was invalid. amends 3r cc 7430 plumbing inspection report for unit 191 lines 12 through 14 unit 193 lines 20 through 22 unit 195 line 24 common area lines 2 through 4
Valuation:
$0
Permit #:
PW20140214034
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; upstairs bathroom toilet installation.kitchen dishwasher installation.sink exchange replacement in kitchen.garbage disposal replacement.gas line replacement for stove
Valuation:
$0
Permit #:
PW20150909123
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5m; new radiant heating system with indirect fired water heater. 1st floor radiant wall with pex tubing 2nd floor radiant baseboards with a mechanical room that has a condensing boiler with an indirect water heater
Valuation:
$0
Permit #:
PMW20130819716
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; final inspection for permit pmw20130819716. new radiant heating system with a condensing boiler and an indirect fired water heater. 1st floor radiant wall with pex tubing 2nd floor radiant baseboards
Valuation:
$0
Permit #:
PMW20140113205
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2pa; amend plumbing mechanical section of 3r cc7181. vacuum breakers tube strapping tub dwv mission couplings replace lary tray with drain repair air chambers water heater flue work stove nipple work and anti tips ridged trap arm
Valuation:
$0
Permit #:
PW20130109002
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2pb; continuation of permit pw20110503306 new drains vents and water. gas to appliances. radiant heat in-slab gro floor er-floor top two floors. solar thermal system with two panels on roof and solar ready water heater in garage
Valuation:
$0
Permit #:
PW20130619407
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; radiant heating system top floor pex staple up with transfer plates bottom floor engineered pex subfloor. new hot water and hydronic heating combined appliance
Valuation:
$0
Permit #:
PMW20140829834
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2pb; continuation of permit pw20110503306 new drains vents and water. gas to appliances. radiant heat in-slab ground floor under-floor top two floors. solar thermal system with two panels on roof and solar ready water heater in garage
Valuation:
N/A
Permit #:
PW20130619407
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; this is an addendum to pw20130731273 to acquire a permit for & have inspected 2 tankless water heaters installed by another company prior to physical inspection report cc - 7157
Valuation:
$0
Permit #:
PW20140616931
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; reference permit pmw20151123162 the following work will amend the gas sizing issue. install indirect fired water heater
Valuation:
$0
Permit #:
PW20160218205
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; install a combination domestic water and heating water condensing appliance in place of an existing dual system. gas and water line modifications
Valuation:
$0
Permit #:
PW20150219129
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; inspection of backflow device on roof client is in upstairs suite though building is legally designated as one lot
Valuation:
$0
Permit #:
PW20150916288
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2pa; amend plumbing, mechanical section of 3r cc7181. vacuum breakers tube strapping tub dwv mission couplings replace laundry tray with drain repair air chambers water heater flue work stove nipple work and anti tips ridged trap arm
Valuation:
N/A
Permit #:
PW20130109002
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replacing the following with low lead compliant brass service stops faucet trap primers bibs and nipples
Valuation:
$0
Permit #:
PW20150820632
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; final inspection for permit pmw20130819716. new radiant heating system with a condensing boiler and an indirect fired water heater. 1st floor radiant wall with pex tubing 2nd floor radiant baseboards
Valuation:
N/A
Permit #:
PMW20140113205
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2pa; replace conventional water heater with condensing water heater. install double check valve for fire suppression supply. new house main isolator
Valuation:
$0
Permit #:
PW20140530537
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replace atmospheric water heater with condensing water heater. new venting. tied into existing radiant heating system
Valuation:
N/A
Permit #:
PW20170227457
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; install tankless water heater with new gas line to meter extend lary stand pipe waste arm
Valuation:
$0
Permit #:
PW20160203783
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; decommission watts 009m3qt backflow s/n: a40343 and install watts backflow lf009 s/n: 44923
Valuation:
$0
Permit #:
PW20150728101
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2pa; plumbing amendments to comply with 3r cc-7153. kitchen and lary tray drain work gas pipe strapping and supports defunct rain leader removal water heater tp discharge
Valuation:
$0
Permit #:
PW20121016324
Status:
COMPLETE
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Professor Plumb Reviews
BuildZoom hasn't received any reviews for Professor Plumb. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Professor Plumb License info
Inactive License
| License # | 805919 |
| Status | Inactive |
| State | California |
| Type | Boiler, Hot Water Heating And Steam Fitting, Plumbing |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Professor Plumb at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Professor Plumb, log in and update your license info in the “Edit Profile” tab.
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
135
Permits
- Building permit records show that Professor Plumb has worked on 135 permitted projects.
Professor Plumb Employees
Eddie Alcantar
Journeyman Plumber
Eve Segasture
President
Michael Ciofalo
Ceo
Odile Ciofalo
Office Manager
Sean McGovern
Journeyman Plumber
This Contractor Endorses
San Francisco, CA