Updated: Jul 13, 2026
Location and Projects
Address
13380 Westerman, St Louis, MO, 63122
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Mauller Jr. HVAC/Mechanical Contractor
Their BuildZoom score of 0 does not rank in the top 50% of Missouri contractors.
If you are thinking of hiring Mauller Jr., Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Mauller Jr., Inc Contact Information
Phone Number: (314) 220-9116
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Address: 13380 Westerman, St Louis, MO 63122
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Mauller Jr., Inc St Louis
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Mauller Jr., Inc, click “This is My Business” to update your information.
Activity
|
1 project
|
2025 |
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Mauller Jr., Inc has worked on at least
4.0 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.
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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Single family dwelling
Valuation:
$389,000
Permit #:
20BLD-06959
Status:
issued
Fee:
$1,639
Permit Type:
New construction
Building Type:
N/A
Replacing # ton air handler and 3 ton air conditioning unit with the same size units
Valuation:
$8,430
Permit #:
22MEC-07346
Status:
issued
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
Building residential existing building
2023-02-10
(wyw) master bathroom remodel
Valuation:
$48,000
Permit #:
23BLD-00805
Status:
complete
Fee:
$369
Permit Type:
Interior finish
Building Type:
N/A
Apr-accelerated - attached garage and habitable space above. - premise 639210101 - 200 amp ug service
Valuation:
$120,000
Permit #:
20BLD-00839
Status:
complete
Fee:
$1,169
Permit Type:
Addition
Building Type:
N/A
Interior kitchen master bathroom laundry room and powder room remodel
Valuation:
$94,000
Permit #:
22BLD-03953
Status:
complete
Fee:
$505
Permit Type:
Alteration
Building Type:
N/A
Master bathroom kitchen & deck-electric 200 amps + 100 amp sub panel
Valuation:
$28,000
Permit #:
20BLD-06981
Status:
complete
Fee:
$232
Permit Type:
Alteration
Building Type:
N/A
Addition to front of home
Valuation:
$273,000
Permit #:
19BLD-00253
Status:
complete
Fee:
$491
Permit Type:
Addition
Building Type:
N/A
Replace furnace with 80, 000 btu goodman furnace
Valuation:
$1,500
Permit #:
22MEC-11251
Status:
complete
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
Undefined - e-permit
Valuation:
N/A
Permit #:
AMD-LP-000416
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential misc. building permit (fence landscape structure shed)
2024-09-13
Installation of an 8 x 12 accessory structure
Valuation:
N/A
Permit #:
24-1578
Status:
issued
Fee:
N/A
Permit Type:
Shed
Building Type:
N/A
Addition
Valuation:
$100,000
Permit #:
21BLD-00982
Status:
complete
Fee:
$532
Permit Type:
Alteration
Building Type:
N/A
Kitchen and 2 bathroom remodels 200 amp service garage rewire
Valuation:
$45,000
Permit #:
20BLD-00822
Status:
complete
Fee:
$377
Permit Type:
Alteration
Building Type:
N/A
New construction hvac
Valuation:
$10,000
Permit #:
22MEC-04265
Status:
filed
Fee:
$181
Permit Type:
New construction
Building Type:
N/A
Replace existing furnace and air conditioner with same capacity units
Valuation:
$5,042
Permit #:
20MEC-03256
Status:
issued
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
Replace furnace
Valuation:
$1,500
Permit #:
22MEC-07258
Status:
complete
Fee:
$126
Permit Type:
Replacement
Building Type:
N/A
Install 100, 000 btu gas furnace with 21/2 ton air conditioning
Valuation:
$3,500
Permit #:
20MEC-01820
Status:
issued
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
Replace (4) bathroom fans in existing locations. replace dyer vent in existing location
Valuation:
$1,250
Permit #:
ME19-000076
Status:
issued
Fee:
N/A
Permit Type:
Single family alt...
Building Type:
N/A
Install mini-split system in 4 season room (20ele-03815)
Valuation:
$4,058
Permit #:
20MEC-02278
Status:
complete
Fee:
$156
Permit Type:
Alteration
Building Type:
N/A
Replace supply air trunk line for basement finish
Valuation:
$2,750
Permit #:
20MEC-10525
Status:
complete
Fee:
$79
Permit Type:
Alteration
Building Type:
N/A
Remmodel kitchen & 2 bathrooms
Valuation:
$40,000
Permit #:
20BLD-00538
Status:
complete
Fee:
$311
Permit Type:
Alteration
Building Type:
N/A
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Mauller Jr., Inc License info
License Not Verified
| License # | MEC7567538 |
| Status | Active |
| City | University City |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2023. Check the current license status of Mauller Jr., Inc with the City of University City
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | MEC9330215 |
| Status | Active |
| City | University City |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of October, 2022. Check the current license status of Mauller Jr., Inc with the City of University City
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | MEC2533895 |
| Status | Active |
| City | University City |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Mauller Jr., Inc 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 | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Mauller Jr., Inc 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 # | MEC2385295 |
| Status | Active |
| City | Dyersburg |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2017. Check the current license status of Mauller Jr., Inc with the City of Dyersburg
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | S6176 |
| Status | Inactive |
| County | St Louis County |
| Type | Structural |
- According to the Saint Louis County Department of Public Works, 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 Mauller Jr., Inc at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 11BLD-01324 |
| Status | Inactive |
| County | St Louis County |
| Type | Gen Contractor |
- According to the Saint Louis County Department of Public Works, 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 Mauller Jr., Inc at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | MEC2566443 |
| Status | Inactive |
| City | University City |
| Type | Mechanical 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 Mauller Jr., Inc at the City of University City.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | M237 |
| Status | Inactive |
| County | Jefferson County |
| Type | Mechanical Contractor |
- According to the Jefferson County Building Division, 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 Mauller Jr., Inc at the Jefferson County Building Division.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are Mauller Jr., Inc, click “This is My Business” to update your information.
172
Permits
- Building permit records show that Mauller Jr., Inc has worked on 172 permitted projects.
Mauller Jr., Inc Employees
DM
Dan Mauller
Owner
DM
Don Mauller
DM
Donald Mauller
Owner
GM
Gabriel Mauller
Owner
MC
Mauller Heating & Cooling
Owner
WM
William Mauller
Owner