Updated: Apr 16, 2026
Location and Projects
Address
Gaithersburg, MD, 20879
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Joel S. Knight HVAC/Mechanical Contractor
Joel S. Knight, holds a Heating, Ventilation, Air Conditioning And Refrigeration license and 1 other license according to the Maryland license board.
Their BuildZoom score of 92 ranks in the top 32% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Joel S. Knight, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Joel S. Knight Contact Information
Phone Number: (410) 263-1643
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Install new electrical air conditioning gas heating 2 ductwork systems;
Valuation:
N/A
Permit #:
MEC21-0683
Status:
final
Fee:
$491
Permit Type:
New building - co...
Building Type:
N/A
Install new electrical air conditioning gas heating 2 ductwork systems
Valuation:
N/A
Permit #:
MEC21-0278
Status:
final
Fee:
$512
Permit Type:
New building - re...
Building Type:
N/A
Install 2 new electrical air conditioning 2 new gas heating
Valuation:
N/A
Permit #:
MEC21-0350
Status:
final
Fee:
$1,040
Permit Type:
New building - re...
Building Type:
N/A
New install
Valuation:
N/A
Permit #:
MEC21-0104
Status:
final
Fee:
$340
Permit Type:
New building - co...
Building Type:
N/A
New install
Valuation:
N/A
Permit #:
MEC21-0103
Status:
final
Fee:
$340
Permit Type:
New building - co...
Building Type:
N/A
New install
Valuation:
N/A
Permit #:
MEC21-0102
Status:
final
Fee:
$340
Permit Type:
New building - co...
Building Type:
N/A
New install
Valuation:
N/A
Permit #:
MEC20-0253
Status:
final
Fee:
$290
Permit Type:
New building - co...
Building Type:
N/A
Commercial plumbing addition alteration permit
2014-06-09
Bethany 40 center replace water service
Valuation:
N/A
Permit #:
P14002282
Status:
complete
Fee:
$160
Permit Type:
N/A
Building Type:
N/A
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122
BZ Score
$300K
Avg Project
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Projects
117
BZ Score
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Avg Project
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Projects
License # 100269
Gaithersburg, MD
120
BZ Score
-
Avg Project
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Projects
Joel S. Knight Reviews
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Verified License
BuildZoom confirmed this contractor's license
Joel S. Knight License info
Verified License
| License # | 54956 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Joel S. Knight at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CON-4354 |
| Status | Inactive |
| City | Annapolis |
| Type | Mech Cont |
- According to the The City of Annapolis, MD, 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 Joel S. Knight at the The City of Annapolis, MD.
This is a sample of licensing data; click here to access a complete history.