Updated: Jul 15, 2026
Location and Projects
Address
1751 Hover St B4 Ste 46, Longmont, CO, 80501
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John W Loos HVAC/Mechanical Contractor
John W Loos, 1751 Hover St, Longmont, CO (Owned by: John Loos) holds a Residential Mechanical Installations And Repair license and 1 other license according to the Boulder County license board.
Their BuildZoom score of 92 ranks in the top 32% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring John W Loos, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
John W Loos Contact Information
Phone Number: (970) 852-7632
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Address: 1751 Hover St B4 Ste 46, Longmont, CO 80501
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John W Loos Longmont
Quality
92
68th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
John W Loos has a BuildZoom score of 92, which places them above 68% of 55,949 contractors in Colorado.
Activity
|
1 project
|
2025 |
Our building permit records indicate that John W Loos has worked on at least
1.0 project over the past year.
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
|
< $5k |
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.
Addition of lighting and outlets to new bathroom kitchen and dining updating metal boxes to plastic
Valuation:
$300
Permit #:
2025-ELEC-0010788
Status:
issued
Fee:
$20
Permit Type:
N/A
Building Type:
N/A
Addition and removal of interior walls
Valuation:
N/A
Permit #:
2025-LOG-0001325
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition and removal of interior walls
Valuation:
N/A
Permit #:
2025-RESCON-0000501
Status:
issued
Fee:
$319
Permit Type:
N/A
Building Type:
N/A
Addition bathroom exhaust adjust placement of existing floor vent
Valuation:
$150
Permit #:
2025-MECH-0007264
Status:
final
Fee:
$20
Permit Type:
N/A
Building Type:
N/A
Install hvac gas line from meter to garage and tee off for fire pit install water heater connect waste and water lines to existing pipes for bathroom
Valuation:
$12,000
Permit #:
16-001512
Status:
issued
Fee:
$386
Permit Type:
N/A
Building Type:
N/A
Blackbear id#p04-966<br/>corner lot fence<br/>fees:<br/>1) building permit flat fee<br/>2) city use tax (calc)<br/>3) county use tax (calc)
Valuation:
N/A
Permit #:
04-000166
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Blackbear id#p00-33<br/>furnace<br/>fees:<br/>1) building permit flat fee<br/>2) boulder co use tax<br/>3) city use tax<br/>4) plumbing
Valuation:
N/A
Permit #:
00-001138
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Fence
Valuation:
N/A
Permit #:
F-01-00218
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Basement finish (1400 sq ft)
Valuation:
N/A
Permit #:
MSC141046
Status:
expired
Fee:
$519
Permit Type:
Basement finish
Building Type:
N/A
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John W Loos Reviews
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Verified License
BuildZoom confirmed this contractor's license
John W Loos License info
Verified License
| License # | CON-25-0208 |
| Status | Active |
| County | Boulder County |
| Type | Residential Mechanical Installations And Repair |
| Date Issued | 09-12-2025 |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for John W Loos at the Boulder County Land Use Department.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 76502 |
| Status | Inactive |
| State | Colorado |
| Type | Residential Wireman |
- According to the Colorado Division of Professions and Occupations, 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 John W Loos at the Colorado Division of Professions and Occupations.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
John W Loos Employees
JL
John Loos
Owner
JL
John W Loos