Updated: Mar 21, 2026
Location and Projects
Address
7 WEST 41ST AVENUE #505, San Mateo, CA, 94403
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The Backflow Pro Plumber
The Backflow Pro Inc, 7 W 41st Ave, San Mateo, CA (Employee: Tomislav Mijo Majic) holds a Plumbing license according to the California license board.
Their BuildZoom score of 111 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring The Backflow Pro Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
The Backflow Pro Inc Services
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The Backflow Pro Inc Contact Information
Phone Number: (800) 511-2210
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Address: 7 WEST 41ST AVENUE #505, San Mateo, CA 94403
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The Backflow Pro Inc San Mateo
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
The Backflow Pro Inc has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
6 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that The Backflow Pro Inc has worked on at least
13.0 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
|
13 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that The Backflow Pro Inc mostly works on
plumbing project
projects.
Pricing
|
1 project
|
$5k-$20k |
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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Work category: 11p; inspection to confirm a device 1/2 watts 009qt rp serial # a13209 was removed and one was installed in its place for carbonator in a different spot in same room (1/2 watts lf009qt rp serial # 340241)
Valuation:
N/A
Permit #:
PW20250220210
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; confirmaiton of a device removed by others - 3/4 febco 825y rp serial # j036948. garage south wall @ 501 hudson av. there is an existing device here same location. 3/4 febco 825ya rp ser # j036990 located in garage back left corner up by the ceiling for irrigation
Valuation:
N/A
Permit #:
PW20240514772
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; permit to addition existing previously installed by others irrigation common area backflow assembly into system. device information is 3 febco lf880v rp ser # n2001080905 on corner of executive park blvd and candle stick cove way. closest address is 112 seal cove terrace. 101 executive park blvd was not available to choose from sfdbi
Valuation:
N/A
Permit #:
PW20230209639
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one (1) 3/4 wilkins 950xl dc (unapproved for fire service 6 watts 709 dcda) with new usc approved 3/4 watts 007m1qt dc and bring device back to original manufacturer usc approved configuration
Valuation:
N/A
Permit #:
PW20241030788
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one (1) 4 wilkins 975 rp serial # b03660 with one (1) new 4 wilkins 375ast rp
Valuation:
N/A
Permit #:
PW20250206900
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one (1) 2 febco 825y rp serial # b1823 with one (1) new 2 wikins 375xl rp serial # akb3941 tag # k35168
Valuation:
N/A
Permit #:
PW20211229615
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replacing broken bypass device 3/4 805y dc serial # x8318. swapping out with new device
Valuation:
N/A
Permit #:
PW20240306130
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; repalce existing 6 ames dcda serial # 0410e19 and bypass at meter # 8261910000 with new 6 ames deringer 30g dcda2
Valuation:
N/A
Permit #:
PW20231213265
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one 6 ames 3000ss dcda with new 6 ames deringer 30g dcda2 approved for vertical up orientation
Valuation:
N/A
Permit #:
PW20220907676
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replacing 4 febco 806y dc serial # 9607291312 with new 4 deringer 20 dc on domestic water line
Valuation:
N/A
Permit #:
PW20221102279
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
To confirm the hazard and protection have been removed by others for removal of blackflow
Valuation:
N/A
Permit #:
PP20240108698
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace existing 3 febco 850 dc serial # 9902231412 with new 3 ames deringer 20 dc
Valuation:
N/A
Permit #:
PW20220826393
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one (1) 2 smr pvb s/n p514805 backflow assembly with one (1) new 2 wilkins 375xl rp above grade on the irrigation water line internal. located at 1160 battery street (bldg c) on embarcadero side in planter
Valuation:
N/A
Permit #:
PW20190918004
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; permit for replacement of one 1-1/2” febco 825y rp serial # a002738 with new 1-1/2 wilkins 975xl2 rp
Valuation:
N/A
Permit #:
PW20210602835
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Shirdi sai parivaar: replace existing backflow prevention 2-
Valuation:
$6,000
Permit #:
B-PL24-0172
Status:
final
Fee:
$424
Permit Type:
plumbing
Building Type:
N/A
Work category: 11p; replace one (1) 4 febco 805y dc serial # c0697 at meter # 0096315296 with one (1) new 4 wilkins 350astr dc
Valuation:
N/A
Permit #:
PW20201111266
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Safeway milk plant install backflow at irrigation point of use - zurn model 375xl
Valuation:
$3,000
Permit #:
B21-1732
Status:
final
Fee:
$369
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one 3/4 wilkins 975 rp serial # 122520 with one new 1 wilkins 375xl rp serial # b358970
Valuation:
N/A
Permit #:
PW20200429187
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; removal of backflow preventer
Valuation:
N/A
Permit #:
PW20240408928
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 11p; replace one (1) 1 watts 909 rp serial # 018180 with one (1) new 1 wilkins 375xl rp
Valuation:
N/A
Permit #:
PW20201111267
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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The Backflow Pro Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
The Backflow Pro Inc License info
Verified License
| License # | 933568 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for The Backflow Pro Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Insurance Company Of The West |
87
Permits
- Building permit records show that The Backflow Pro Inc has worked on 87 permitted projects.
The Backflow Pro Inc Employees
TM
Tomislav Mijo Majic
Rmo / Ceo / Pres