Updated: May 27, 2026
Location and Projects
Address
4389 BUCKEYE SCHOOL RD., Festus, MO, 63028
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Mahoneys Plumbing LLC
Mahoneys Plumbing LLC, 4389 Buckeye School Rd, Festus, MO (Owned by: Michael Mahoney) holds a Plumber license and 4 other licenses according to the St Louis County license board.
Their BuildZoom score of 107 ranks in the top 6% of 23,328 Missouri licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mahoneys Plumbing LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Mahoneys Plumbing LLC Services
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Mahoneys Plumbing LLC Contact Information
Phone Number: (636) 464-2429
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Address: 4389 BUCKEYE SCHOOL RD., Festus, MO 63028
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Mahoneys Plumbing LLC Festus
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mahoneys Plumbing LLC has a BuildZoom score of 107, which places them above 94% of 23,328 contractors in Missouri.
Activity
|
17 projects
|
2025 |
|
33 projects
|
2024 |
|
18 projects
|
2023 |
Our building permit records indicate that Mahoneys Plumbing LLC has worked on at least
68.0 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
|
7 projects
|
Home Additions |
|
65 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Mahoneys Plumbing LLC mostly works on
plumbing project
and home addition
projects.
Pricing
|
45 projects
|
< $5k |
|
8 projects
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
|
6 projects
|
$50k-$100k |
The typical size of their permits is approximately $3,000. This graph shows the distribution of these job values.
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 Mahoneys Plumbing LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
No building scope replace 1/2 inch rpz backflow device in basement that serves steam unit in master bathroom shower. device will be tested and tagged before inspection
Valuation:
$1,200
Permit #:
25PLU-02820
Status:
complete
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
No building scope install new 40 gallon gas water heater 3/4 prv cold waterlines in basement 2 outside hose bibs kitchen faucet and re install existing dishwasher
Valuation:
$4,000
Permit #:
25PLU-06962
Status:
complete
Fee:
$109
Permit Type:
Repair
Building Type:
N/A
Also included in the attached scope: whole house flooring new interior door hinges and knobs wall repairs/patching in most rooms replace two damaged interior doors addition a wine fridge in kitchen (need a new receptacle added for that) addition an upper cabinet above that refinish all cabinets replace some of the lights (about half of them) correct the existing sump pump to be on a d... see more
Valuation:
$15,000
Permit #:
24BLD-00948
Status:
complete
Fee:
$193
Permit Type:
Interior finish
Building Type:
N/A
***please sign on to integrated building permit number 24bld-02681. thank you***no building scope install new 40 gallon gas water heater with expansion tank 3/4 prv new water lines for 1 full bathroom and water heater replace stack from slab up to vent in wall install new laundry box and laundry drain with re vent kitchen sink with faucet 1 toilet 1 vanity and 1 shower valve
Valuation:
$5,500
Permit #:
24PLU-10006
Status:
canceled
Fee:
N/A
Permit Type:
Repair
Building Type:
N/A
No building scope replace main stack from basement up to vent to include new toilet sweep tub drain kitchen drain and lavatory drain install new toilet
Valuation:
$2,900
Permit #:
25PLU-09853
Status:
complete
Fee:
$132
Permit Type:
Repair
Building Type:
N/A
No building scope install new 40 gallon gas water heater 3/4 prv replace main stack from basement floor up to vent in 1st floor wall replace laundry bibs kitchen sink with faucet and dishwasher if allowed...just submitted 9932 meadow ave. this also has no building scope forgot to include in description
Valuation:
$3,000
Permit #:
24PLU-12410
Status:
complete
Fee:
$150
Permit Type:
Repair
Building Type:
N/A
No building scope install all new hot and cold water lines due to theft 3/4 prv water heater installed without permit new laundry bibs outside hose bib install new kitchen sink with faucet 1 dishwasher 2 toilets 2 vanities and replace section of 2 toilet sweeps and flanges. re route kitchen drain into wall and tie onto existing vent
Valuation:
$4,500
Permit #:
24PLU-06134
Status:
complete
Fee:
$221
Permit Type:
Repair
Building Type:
N/A
No building scope. i do have another plumbing permit on this address. during that final inspection we noticed a leak from upstairs opened wall and found crack in main stack so this permit will be for repairing section of upper stack in hall bathroom
Valuation:
$975
Permit #:
24PLU-04362
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Replace main stack from basement floor up to vent in 1st floor wall install new kitchen sink with faucet dishwasher to be installed only if cabinet layout allows for it 1 new vanity 1 40 gallon electric water heater in safe pan and 3/4 prv
Valuation:
$3,000
Permit #:
24PLU-12409
Status:
complete
Fee:
$156
Permit Type:
Repair
Building Type:
N/A
Pasadena hills building permit repair stack as needed replace water lines as needed install 2 toilets 2 vanities 2 shower base 1 tub kitchen sink with faucet disposal and dishwasher
Valuation:
$5,500
Permit #:
25PLU-14888
Status:
issued
Fee:
$227
Permit Type:
Repair
Building Type:
N/A
No building scope new water heater installed without permit addition expansion tank run new 2 inch vent for basement bathroom install basement laundry drain and vent 1 toilet and replace upper section of main stack
Valuation:
$3,000
Permit #:
24PLU-01594
Status:
complete
Fee:
$138
Permit Type:
Repair
Building Type:
N/A
No building scope install new 40 gallon gas water heater kitchen sink with faucet and 1 toilet replace main stack from basement up to vent and a 2nd stack to re collect 2nd main line from 1/2 bathroom in addition
Valuation:
$3,500
Permit #:
24PLU-01191
Status:
complete
Fee:
$144
Permit Type:
Repair
Building Type:
N/A
No building scope install drain waste vent and water for new 1/2 bathroom on 1st floor install 1 new toilet and vanity replace laundry bibs install 3/4 prv and repair kitchen drain at wall
Valuation:
$7,000
Permit #:
24PLU-10069
Status:
complete
Fee:
$144
Permit Type:
Repair
Building Type:
N/A
No building scope. install new 40 gallon gas water heater in mechanical closet. install with safe pan
Valuation:
$1,800
Permit #:
25PLU-06266
Status:
complete
Fee:
$47
Permit Type:
Replacement
Building Type:
N/A
No building scope install new 40 gallon electric water heater in hall closet with safe pan and drain to daylight. repair kitchen drain at wall install new kitchen faucet and re set 2 toilets
Valuation:
$2,900
Permit #:
24PLU-07521
Status:
complete
Fee:
$103
Permit Type:
Repair
Building Type:
N/A
Water heater installed 2021 without permit? addition expansion tank to existing heater install new 3/4 prv replace tub drain in basement replace kitchen line from basement ceiling over to main stack and install new y connection at stack
Valuation:
$1,800
Permit #:
23PLU-15179
Status:
complete
Fee:
$97
Permit Type:
Repair
Building Type:
N/A
No building scope install 40 gallon gas water heater kitchen faucet dishwasher re pipe basement lavatory drain repair kitchen and lavatory drains at wall replace basement shower valve
Valuation:
$3,500
Permit #:
24PLU-03881
Status:
complete
Fee:
$127
Permit Type:
Repair
Building Type:
N/A
Replace all water lines in basement due to theft install 3/4 prv 2 outside hose bibs new 40 gallon gas water heater kitchen sink with faucet 1 dishwasher 2 toilets 2 vanities upper section of kitchen stack and repair lavatory arm
Valuation:
$3,500
Permit #:
23PLU-19075
Status:
complete
Fee:
$239
Permit Type:
Repair
Building Type:
N/A
No building scope install approx. 4ft of liner in cast iron under basement floor. never permitted this type of repair let me know if additional info is needed thanks
Valuation:
$2,800
Permit #:
24PLU-20119
Status:
complete
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
No building scope install new 40 gallon gas water heater with expansion tank
Valuation:
$2,500
Permit #:
25PLU-04222
Status:
complete
Fee:
$47
Permit Type:
Replacement
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Mahoneys Plumbing LLC License info
Verified License
| License # | P7522 |
| Status | Active |
| County | St Louis County |
| Type | Plumber |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Mahoneys Plumbing LLC at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | PLC1268425 |
| Status | Active |
| City | University City |
| Type | Plumbing Contractor |
- When BuildZoom last verified this license, it had an expiration date of October, 2024. Check the current license status of Mahoneys Plumbing LLC with the City of University City
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Plumbers |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Mahoneys Plumbing LLC with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | P284 |
| Status | Active |
| County | Jefferson County |
| Type | Plumbing Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Mahoneys Plumbing LLC with the Jefferson County Building Division
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | PLC7729070 |
| Status | Inactive |
| City | University City |
| Type | Plumbing Contractor |
- According to the City of University City, 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 Mahoneys Plumbing LLC at the City of University City.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
131
Permits
- Building permit records show that Mahoneys Plumbing LLC has worked on 131 permitted projects.
Mahoneys Plumbing LLC Employees
MM
Michael Mahoney
Owner
MS
Michael Mahoney Sr
Owner
MM
Michael P Mahoney
MS
Michael P Mahoney Sr