Updated: Jun 08, 2026
Location and Projects
Address
5324 AERO DR., Saint Louis, MO, 63110
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Cnj Mechanical Contractors, LLC
Cnj Mechanical Contractors, LLC, 5324 Aero Dr, St. Louis, MO (Employees: Bert Adkins, Bert W Adkins, and Kyle Kopp) holds a Plumber license and 6 other licenses according to the St Louis County license board.
Their BuildZoom score of 105 ranks in the top 8% of 23,328 Missouri licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Cnj Mechanical Contractors, LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Cnj Mechanical Contractors, LLC Services
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Cnj Mechanical Contractors, LLC Contact Information
Phone Number: (314) 351-1562
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Address: 5324 AERO DR., St. Louis, MO 63110
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Cnj Mechanical Contractors, LLC St. Louis
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Cnj Mechanical Contractors, LLC has a BuildZoom score of 105, which places them above 92% of 23,328 contractors in Missouri.
Activity
|
20 projects
|
2025 |
|
5 projects
|
2024 |
Our building permit records indicate that Cnj Mechanical Contractors, LLC has worked on at least
25.0 projects over the past 2 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
|
4 projects
|
Commercial Renovations |
|
13 projects
|
Mechanical projects |
|
3 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Cnj Mechanical Contractors, LLC mostly works on
mechanical project
and commercial renovation
projects.
Pricing
|
5 projects
|
< $5k |
|
6 projects
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
2 projects
|
$100k-$250k |
|
4 projects
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
|
1 project
|
$1mil+ |
The typical size of their permits is approximately $35,000. 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 Cnj Mechanical Contractors, LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Hazelwood east high school - replacement of condensers on roof. no work inside hazelwood east high schoolbuilding
Valuation:
$682,099
Permit #:
25MEC-04711
Status:
issued
Fee:
$461
Permit Type:
Replacement
Building Type:
N/A
Hazelwood school - replacement of condensing units on roof only. no changes to system inside building
Valuation:
$1,296,845
Permit #:
25MEC-04708
Status:
issued
Fee:
$557
Permit Type:
Replacement
Building Type:
N/A
Townsend elementary - condensing unit replacement on roof of townsend elementary. no work inside
Valuation:
$312,137
Permit #:
25MEC-05180
Status:
issued
Fee:
$401
Permit Type:
Replacement
Building Type:
N/A
(total care dental) installation of dwv and hot & cold domestic water lines for a renovation of existing dental office for three new exam rooms. this work will be performed under bridgeton building permit b25- 0205
Valuation:
$40,000
Permit #:
25PLU-13337
Status:
complete
Fee:
$221
Permit Type:
Alteration
Building Type:
N/A
Twillman elementary - replacement of condensers on roof. no work inside
Valuation:
$476,620
Permit #:
25MEC-05022
Status:
issued
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
Lairmore elementary - replacement of condensers on roof. no work inside
Valuation:
$428,413
Permit #:
25MEC-05021
Status:
issued
Fee:
$425
Permit Type:
Replacement
Building Type:
N/A
Brown elementary-condenser replacement on roof of brown elementary. no work inside
Valuation:
$257,048
Permit #:
25MEC-05179
Status:
issued
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
Holiday inn - project to consist of upgrading existing fixtures with new similar fixtures
Valuation:
$132,000
Permit #:
25PLU-02303
Status:
issued
Fee:
$3,002
Permit Type:
Replacement
Building Type:
N/A
Interior plumbing building out for sybergs corporate offices- 25bld-00555
Valuation:
$160,000
Permit #:
25PLU-05332
Status:
issued
Fee:
$413
Permit Type:
Alteration
Building Type:
N/A
(heatrice dds) installation of underground compressed air and vacuum to each dental chair. plans were part of 24mec-08505 drawing p-131
Valuation:
$25,000
Permit #:
25MEC-00461
Status:
complete
Fee:
$295
Permit Type:
New construction
Building Type:
N/A
Salthouse smiles-we are contracted to run the piping for the dental vacuum equipment air oxygen and nitrous oxide. drawings were already submitted under permit 25bld-06025
Valuation:
$59,242
Permit #:
25MEC-08280
Status:
issued
Fee:
$498
Permit Type:
Alteration
Building Type:
N/A
Dr. jane otto dmd.-installation of one new 1/2 backflow device for future dental vacuum
Valuation:
$2,000
Permit #:
25PLU-04867
Status:
complete
Fee:
$79
Permit Type:
Addition
Building Type:
N/A
Meramec bluffs retirement-replacement of defective existing device
Valuation:
$2,000
Permit #:
25PLU-05048
Status:
issued
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
Meramec bluffs retirement - replacement of failed existing device
Valuation:
$2,000
Permit #:
25PLU-04765
Status:
issued
Fee:
$79
Permit Type:
Replacement
Building Type:
N/A
(total care dental) 3 new dental chairs. run instrument air and vacuum to each chair
Valuation:
$40,000
Permit #:
25MEC-06588
Status:
canceled
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Installation of drain waste and vent and domestic hot and cold water lines for a residential remodel
Valuation:
$6,000
Permit #:
25PLU-11740
Status:
complete
Fee:
$203
Permit Type:
Alteration
Building Type:
N/A
****existing mechanical permit* we are unable to process your permit for the following reason(s): there is already a mechanical permit 22mec-10125 for a similiar scope of work at this address. the original permit will need to be cancelled before resubmitting a new mechanical permit application.***( lambert airport) project is to replace like for like a 2 ton remote terminal unit on th... see more
Valuation:
$10,300
Permit #:
25MEC-08274
Status:
canceled
Fee:
N/A
Permit Type:
Replacement
Building Type:
N/A
Total care dental - dental vac and air piping plan reviewed under 25plu-133337
Valuation:
$40,000
Permit #:
25MEC-07567
Status:
issued
Fee:
$379
Permit Type:
Alteration
Building Type:
N/A
Drain waste and vent and domestic hot and cold water lines for a residential remodel
Valuation:
$8,000
Permit #:
25PLU-11743
Status:
complete
Fee:
$174
Permit Type:
Alteration
Building Type:
N/A
Mo veterans home-replace defective water heater
Valuation:
$25,000
Permit #:
24PLU-23074
Status:
complete
Fee:
$85
Permit Type:
Repair
Building Type:
N/A
Similar Contractors See more
119
BZ Score
$8K
Avg Project
-
Projects
122
BZ Score
$4.5K
Avg Project
-
Projects
License # P7241
Saint Louis, MO
119
BZ Score
$7K
Avg Project
-
Projects
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Verified License
BuildZoom confirmed this contractor's license
Cnj Mechanical Contractors, LLC License info
Verified License
| License # | P9819 |
| Status | Active |
| County | St Louis County |
| Type | Plumber |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Cnj Mechanical Contractors, LLC at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | D9819 |
| Status | Active |
| County | St Louis County |
| Type | Drainlayer |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Cnj Mechanical Contractors, LLC at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | X0398 |
| Status | Active |
| County | St Louis County |
| Type | Mechanical |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Cnj Mechanical Contractors, LLC at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | H10314 |
| Status | Active |
| County | St Louis County |
| Type | Mas Pipefitter |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Cnj Mechanical Contractors, 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
| 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 Cnj Mechanical Contractors, LLC with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | St. Charles County |
| Type | Mechanical |
- According to the St. Charles County Department of Development & Business Services, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | St. Charles County |
| Type | Plumbing Contractor |
- According to the St. Charles County Department of Development & Business Services, 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.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
25
Permits
- Building permit records show that Cnj Mechanical Contractors, LLC has worked on 25 permitted projects.
Cnj Mechanical Contractors, LLC Employees
BA
Bert Adkins
BA
Bert W Adkins
KK
Kyle Kopp
TF
Timothy A Flowers
TF
Timothy Flowers