Updated: May 23, 2026
Location and Projects
Address
184 MENDELL STREET, San Francisco, CA, 94124
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CAHILL AND KAVANAUGH Plumber
CAHILL AND KAVANAUGH INC, 184 Mendell St, San Francisco, CA (Employees: Kevin John Kavanaugh, Kevin John Kavanaugh Ii, and Matthew James Cahill) holds a Plumbing, Boiler, Hot Water Heating And Steam Fitting license and 3 other licenses according to the California license board.
Their BuildZoom score of 108 ranks in the top 5% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring CAHILL AND KAVANAUGH INC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
CAHILL AND KAVANAUGH INC Services
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CAHILL AND KAVANAUGH INC Contact Information
Phone Number: (650) 359-4049
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Address: 184 MENDELL STREET, San Francisco, CA 94124
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CAHILL AND KAVANAUGH INC San Francisco
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
CAHILL AND KAVANAUGH INC has a BuildZoom score of 108, which places them above 95% of 336,931 contractors in California.
Activity
|
23 projects
|
2025 |
|
15 projects
|
2024 |
|
24 projects
|
2023 |
Our building permit records indicate that CAHILL AND KAVANAUGH INC has worked on at least
62.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
56 projects
|
Plumbing projects |
|
6 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that CAHILL AND KAVANAUGH INC mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
1 project
|
$20k-$50k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by CAHILL AND KAVANAUGH INC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Work category: 1p; testing 2 existing previously installed backflows. to be certified with the health department for sale of the home
Valuation:
N/A
Permit #:
PW20250213055
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; supply and installation of one new steam boiler supply and installation of one new backflow device
Valuation:
N/A
Permit #:
PMW20250519353
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replacement of backflow serial #b6598 for boiler make up on the roof in the mechanical area
Valuation:
N/A
Permit #:
PW20250225342
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; unit 304 only: in executive bathroom malcolm plumbing will remove two basin bowls and faucet and reinstall 2 new bowls and faucets. includes 2 new angle stops serving both basins hot and cold. also to remove 1 toilet and replace with new toilet including angle stop serving toilet. guest bath: remove 1 basin bowl and faucet and reinstall new bowl with 2 new angle sto... see more
Valuation:
N/A
Permit #:
PW20221011610
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; removed 2 75 gallon residential water heaters and installed a tankless water heater with storage tank for domestic hot water
Valuation:
N/A
Permit #:
PW20250605735
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Renewal and installation of one new steam boiler. 400 000 btu. serial # 2407034
Valuation:
N/A
Permit #:
PP20250627128
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; installation of new backflow device for irrigation system
Valuation:
N/A
Permit #:
PW20250516321
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replacement of backflow device for irrigation system. replaced by another company. old backflow serial #r1925. ne backflow serial #13143
Valuation:
N/A
Permit #:
PW20240531171
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; supply and installation of one new steam boiler; supply and installation of one new backflow device
Valuation:
N/A
Permit #:
PW20250626234
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; we pulled this additional permit as per permit departments requirement pto the new boiler. inspection has already been signed off on permit #pw20231025139
Valuation:
N/A
Permit #:
PW20231121798
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; house trap and sewer replacement
Valuation:
N/A
Permit #:
PW20250328146
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replacement of backflow device servicing irrigation system. backflow serial #426376 replaces serial #3359611
Valuation:
N/A
Permit #:
PW20240729476
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; removal and replacement of one back backflow device in the mechanical room
Valuation:
N/A
Permit #:
PW20250731007
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; replacement of dhw boiler
Valuation:
N/A
Permit #:
PW20250501962
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; repairing a short section of building sewer under sidewalk. repair only
Valuation:
N/A
Permit #:
PW20251023069
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Removal and replacement of existing domestic hot water system
Valuation:
$49,000
Permit #:
B43119
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Commercial
Boiler and storage tank installation project. removal and decommisioning of 2 domestic hot water heaters serial #s 1052m001002 and 1052m00945
Valuation:
N/A
Permit #:
PP20230802263
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; boiler is not in the city of san francisco's system. permit needed to enter pto
Valuation:
N/A
Permit #:
PW20240419212
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; removal of old watts backflow and installing new same watts backflow. this backflow is up on the roof and not specific to any unit
Valuation:
N/A
Permit #:
PW20210429927
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 3pb; 15 new kitchen sinks and faucets in separate unit
Valuation:
N/A
Permit #:
PW20251022020
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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BZ Score
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Avg Project
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BZ Score
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Avg Project
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Projects
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BZ Score
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Avg Project
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Projects
CAHILL AND KAVANAUGH INC Reviews
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Verified License
BuildZoom confirmed this contractor's license
CAHILL AND KAVANAUGH INC License info
Verified License
| License # | 885680 |
| Status | Active |
| State | California |
| Type | Plumbing, Boiler, Hot Water Heating And Steam Fitting |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for CAHILL AND KAVANAUGH INC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 873338 |
| Status | Inactive |
| State | California |
| Type | 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. If this is your business, please update your license status.
Check this license's status for CAHILL AND KAVANAUGH INC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 482349 |
| Status | Inactive |
| State | California |
| Type | Plumbing, Fire Protection, Solar |
| 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. If this is your business, please update your license status.
Check this license's status for CAHILL AND KAVANAUGH INC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 294004 |
| Status | Inactive |
| State | California |
| Type | 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. If this is your business, please update your license status.
Check this license's status for CAHILL AND KAVANAUGH INC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Pacific Compensation Insurance Company |
735
Permits
- Building permit records show that CAHILL AND KAVANAUGH INC has worked on 735 permitted projects.
CAHILL AND KAVANAUGH INC Employees
KK
Kevin John Kavanaugh
Sole Owner
KI
Kevin John Kavanaugh Ii
Rmo / Ceo / Pres
MC
Matthew James Cahill
Rmo / Ceo / Pres
RW
Richard Charles Wilpitz
Ceo / President